Write the equation for the perpendicular bisector of a segment that has endpoints (1, –4) and (3, 2).
options:

A)

y = –3x – 1

B)

y = –3x + 5

C)

y = –1∕3x – 1∕3

D)

y = 3x + 5

Answers

Answer 1

Answer:

  C)  y = -1/3x -1/3

Step-by-step explanation:

You want the perpendicular bisector of the segment between the points (1, -4) and (3, 2).

Perpendicular bisector

The perpendicular bisector is the line perpendicular to the given segment that goes through the midpoint of the given segment. If the midpoint is ...

  (h, k) = (x1 +x2, y1 +y2)/2

then the perpendicular bisector equation can be written ...

  (x2 -x1)(x -h) +(y2 -y1)(y -k) = 0

Application

The midpoint is ...

  (h, k) = (1 +3, -4 +2)/2 = (4, -2)/2 = (2, -1)

The perpendicular line is ...

  (3 -1)(x -2) +(2 -(-4))(y -(-1)) = 0

  2x -4 +6y +6 = 0

Subtracting 6y and collecting terms, we have ...

  2x +2 = -6y

Dividing by -6 puts this in the desired form:

  y = -1/3x -1/3

__

Alternate solution

The slope of the segment is ...

  m = (y2 -y1)/(x2 -x1) = (2 -(-4))/(3 -1) = 6/2 = 3

The slope of the perpendicular line is the opposite reciprocal of this: -1/3. As above the midpoint is (2, -1), so the point-slope equation is ...

  y +1 = -1/3(x -2)

  y = -1/3x +2/3 -1 . . . . subtract 1, eliminate parentheses

  y = -1/3x -1/3


Related Questions

Suppose two dice (one red, one green) are rolled. Consider the following events. A: the red die shows 2; B: the numbers add to 6; C: at least one of the numbers is 3; and D: the numbers do not add to 9. Express the given event in symbols. HINT [See Example 5.] The numbers do not add to 6.
B
D
D'
B'
B' ? D
How many elements does it contain?

Answers

The set B' ∩ D' represents the event "the numbers do not add to 6." It contains 20 elements.

The complement of event B is B' = {2, 3, 4, 5, 7, 8, 9, 10, 11, 12}. The complement of event D is D' = {2, 3, 4, 5, 6, 7, 8, 10, 11, 12}. Taking the intersection of their complements, we get B' ∩ D' = {2, 3, 4, 5, 7, 8, 10, 11}. This set represents the event "the numbers do not add to 6." It contains 8 elements out of the 36 possible outcomes of rolling two dice, so the probability of this event is 8/36 or 2/9.

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suppose that grade point averages of undergraduate students at one university have a bell-shaped distribution with a mean of 2.56 and a standard deviation of 0.45 . using the empirical rule, what percentage of the students have grade point averages that are greater than 2.11 ? please do not round your answer.

Answers

16%  percentage of the students have grade point averages that are greater than 2.11

Using the empirical rule, we know that for a bell-shaped distribution, approximately:

68% of the data falls within one standard deviation of the mean

95% of the data falls within two standard deviations of the mean

99.7% of the data falls within three standard deviations of the mean

To find the percentage of students with a grade point average greater than 2.11

We first need to calculate how many standard deviations away from the mean 2.11 is:

z = (2.11 - 2.56) / 0.45

= -1

This tells us that 2.11 is 1 standard deviation below the mean.

Since the distribution is symmetric.

The percentage of students with a GPA greater than 2.11 is the same as the percentage of students with a GPA less than 2.56 + 1*0.45, which is:

68% + 95% = 163%

So, approximately

100% - 163%

= 16% of the students have a GPA greater than 2.11.

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jackson is conducting an experiment for his physics class. he attaches a weight to the bottom of a metal spring. he then pulls the weight down so that it is a distance of six inches from its equilibrium position. jackson then releases the weight and finds that it takes four seconds for the spring to complete one oscillation. Which function best models the position of the weight?a. s(t) = 6cos(2πt)b. s(t) = 6sin(π/2 t)c. s(t) = 6sin(2πt)d. s(t) = 6cos (π/2 t)

Answers

6 cos(π/2 t) is the best model for the position of the weight.

The motion of the weight on the spring can be modeled by a sine or cosine function because it oscillates back and forth around its equilibrium position.

We know that, the weight is initially pulled down 6 inches from its equilibrium position, so the function should have an amplitude of 6.

The time it takes for the spring to complete one oscillation is 4 seconds, so the period of the function is 4 seconds.

The general form of a sine or cosine function with amplitude A and period T is:

f(t) = A sin(2πt/T) or f(t)

= A cos(2πt/T)

Substituting the given values,

we get:

f(t) = 6 sin(2πt/4) or f(t)

= 6 cos(2πt/4)

Simplifying, we get:

f(t) = 6 sin(π/2 t) or f(t)

= 6 cos(π/2 t)

Therefore,

the function that best models the position of the weight is

s(t) = 6 cos(π/2 t).

So, the answer is option (D).

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HELP ME WITH THIS ANSWER YALL- :Today, most people use an app to get directions. What do you think it would have been like to drive without an app? Besides converting distances, what other kinds of math concepts might you need to use?

Answers

Driving without an app would have been a much different experience. Instead of having turn-by-turn directions, one would need to rely on maps and other forms of navigation, such as written directions from friends or family, or using landmarks and street signs.

Besides converting distances, there are a number of other math concepts that one might need to use when driving without an app. For example, one might need to use basic arithmetic to calculate the estimated time of arrival based on average speed and distance. One might also need to use spatial reasoning to understand the layout of a city and the relative location of different streets and landmarks. Additionally, one might need to use problem-solving skills to make decisions about which route to take and how to handle unexpected road closures or detours.

Professor Cramer determines a final grade based on attendance, two papers, three major tests, and a final exam. Each of these activities has a total of 100 possible points. However, the activities carry different weights. Attendance is worth 3%, each paper is worth 5%, each test is worth 13%, and the final is worth 48%.(a) What is the average for a student with 99 on attendance, 75 on the first paper, 61 on the second paper, 94 on test 1, 86 on test 2, 77 on test 3, and 79 on the final exam? (Enter your answer to one decimal place.)(b) Compute the average for a student with the above scores on the papers, tests, and final exam, but with a score of only 21 on attendance. (Enter your answer to one decimal place.)

Answers

(a) Average for a student with 99 attendance is 81.1% and (b) The average for a student with 21 attendance is 78.8%.

Professor Cramer determines a final grade based on attendance, two papers, three major tests, and a final exam, the activities carry different weights.

Attendance is worth 3%,

each paper is worth 5%,

each test is worth 13%,

and the final is worth 48%.

(a) The average for a student with 99 on attendance, 75 on the first paper, 61 on the second paper, 94 on test 1, 86 on test 2, 77 on test 3, and 79 on the final exam

= [(99×3%) + (75×5%) + (61×5%) + (94×13%) + (86×13%) + (77×13%) + (79×48%)] ÷ [0.03 + 2(0.05) + 3(0.13) + 0.48]

= [2.97 + 3.75 + 3.05 + 12.22 + 11.18 + 10.01 + 37.92] ÷ 1

= 81.1 %

(b) The average for a student with the above scores on the papers, tests, and final exam, but with a score of only 21 on attendance

= [(21×3%) + (75×5%) + (61×5%) + (94×13%) + (86×13%) + (77×13%) + (79×48%)] ÷ [0.03 + 2(0.05) + 3(0.13) + 0.48]

= [0.63 + 3.75 + 3.05 + 12.22 + 11.18 + 10.01 + 37.92] ÷ 1

= 78.8 %

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Mai, Clare, and Tyler are hiking
from a parking lot to the summit
of a mountain. They pass a sign
that gives distances.
2
S
Parking lot: 3/4 mile
Summit: 1 and 1/2 miles
Mai says: "We are one third of the
way there." Clare says: "We have to
go twice as far as we have already
gone." Tyler says: "The total hike is
three times as long as what we
have already gone."
Who is correct?

Answers

Answer:

Tyler is Correct

Step-by-step explanation:

Total Hike = 2.25 (0.75 + 1.5)

2.25/0.75 = 3

Tyler is correct, since the total hike is 3 times as long as the distance travelled from the parking lot

A 10.0-pound weight is lying on a sit-up bench at the gym. If the bench is inclined at an angle of 15°, there are three forces acting on the weight, as shown in the figure. N is called the normal force and it acts in the direction perpendicular to the bench. F is the force due to friction that holds the weight on the bench. If the weight does not move, then the sum of these three forces is 0. Find the magnitude of N and the magnitude of F. (Round each answer to one decimal place.)

Answers

On solving the provided question, we can say that the equation will be

[tex]N = Fg * cos(15°) = 44.6 N * cos(15°) = 42.8 N[/tex]

What is the equation?

A mathematical equation is a formula that links two assertions and signifies equivalence with the equals sign (=). In, a mathematical statement that proves the equality of two mathematical expressions is referred to as an equation. The equal sign, for instance, separates the variables [tex]3x + 5[/tex] and 14 in the equation [tex]3x + 5 = 14.[/tex]There is a mathematical formula that explains the link between the two phrases that appear on either side of a letter. Frequently, the symbol and the single variable are the same. like [tex]2x - 4 = 2[/tex], for example.

Since the weight is not moving, the sum of the three forces acting on it must be zero. This means that the force of gravity acting on the weight is balanced by the normal force and the force due to friction.

The force of gravity on the weight is given by:

[tex]Fg = m * g[/tex]

where m is the mass of the weight (which we can find by dividing the weight in pounds by the acceleration due to gravity, g), and g is the acceleration due to gravity, which is approximately [tex]9.81 m/s^2.[/tex]

[tex]m = 10.0 pounds / (2.205 pounds/kilogram) = 4.54 kg[/tex]

[tex]Fg = 4.54 kg * 9.81 m/s^2 = 44.6 N[/tex]

The normal force N acts perpendicular to the bench, so it can be found using trigonometry. The angle between the bench and the horizontal is 15 degrees, so the angle between the normal force and the horizontal is also 15 degrees.

[tex]N = Fg * cos(15°) = 44.6 N * cos(15°) = 42.8 N[/tex](rounded to one decimal place)

The force due to friction F acts parallel to the bench, in the opposite direction to the component of the weight that is parallel to the bench. This component can be found using trigonometry:

[tex]Fp = Fg * sin(15°) = 44.6 N * sin(15°) = 12.2 N[/tex]

Since the weight is not moving, the force due to friction must be equal and opposite to this component:

[tex]F = -Fp = -12.2 N[/tex] (rounded to one decimal place)

So the magnitude of the normal force is 42.8 N and the magnitude of the force due to friction is 12.2 N.

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Calculate the area of the triangle formed by the tangent to the graph of the function f(x) = (x-6)/(x-2) at the point x = 3 with the axes of the coordinate system.

Answers

Answer:

The area of the triangle formed by the tangent to the graph of the function f(x) = (x-6)/(x-2) at the point x = 3 with the axes of the coordinate system is 28.125 square units.

Step-by-step explanation:

Differentiation is an algebraic process that finds the gradient (slope) of a curve.  At a point, the gradient of a curve is the same as the gradient of the tangent line to the curve at that point.

Given function:

[tex]f(x)=\dfrac{x-6}{x-2}[/tex]

Differentiate the given function using the quotient rule.

[tex]\boxed{\begin{minipage}{5.5 cm}\underline{Quotient Rule for Differentiation}\\\\If $y=\dfrac{u}{v}$ then:\\\\$\dfrac{\text{d}y}{\text{d}x}=\dfrac{v \dfrac{\text{d}u}{\text{d}x}-u\dfrac{\text{d}v}{\text{d}x}}{v^2}$\\\end{minipage}}[/tex]

[tex]\implies f'(x)=\dfrac{(x-2)\cdot 1-(x-6)\cdot 1}{(x-2)^2}[/tex]

[tex]\implies f'(x)=\dfrac{4}{(x-2)^2}[/tex]

To find the gradient of the tangent lines at x = 3, substitute x = 3 into the differentiated function:

[tex]\implies f'(3)=\dfrac{4}{(3-2)^2}=4[/tex]

Substitute x = 3 into the function to find the y-value of the point on the curve when x = 3:

[tex]\implies f(3)=\dfrac{3-6}{3-2}=-3[/tex]

The slope-intercept form of a linear equation is y = mx + b, where m is the gradient and b is the y-intercept.

Substitute the point (3, -3) and the found gradient m = 4 into the slope-intercept formula and solve for b:

[tex]\begin{aligned}y&=mx+b\\\implies-3&=4(3)+b\\-3&=12+b\\b&=-15\end{aligned}[/tex]

Therefore, the equation of the tangent to the curve at point x = 3 is:

[tex]y=4x-15[/tex]

To calculate the point at which the tangent line intersects the x-axis, substitute y = 0 into the equation of the tangent:

[tex]\begin{aligned}\implies 0&=4x-15\\4x&=15\\x&=3.75\end{aligned}[/tex]

To calculate the point at which the tangent line intersects the y-axis, substitute x = 0 into the equation of the tangent:

[tex]\implies y=4(0)-15=-15[/tex]

Therefore, the tangent line intersects the x-axis at (3.75, 0) and the y-axis at (0, -15).  

This means the triangle formed by the tangent and the axes of the coordinate system has a height of 15 units and a base of 3.75 units.  

[tex]\begin{aligned}\textsf{Area of a triangle}&=\dfrac{1}{2}\sf \cdot base \cdot height\\\\\implies \sf Area&=\dfrac{1}{2} \cdot 3.75 \cdot 15\\\\&=\dfrac{225}{8}\\\\&=28.125\;\; \sf square\;units\end{aligned}[/tex]

Therefore, the area of the triangle is 28.125 square units.

Five quarts of a latex enamel paint will cover about 200 square feet of wall surface. How many quarts are needed to cover 165 square feet of kitchen wall and 115 square feet of bathroom wall?

Answers

Answer:

25

Step-by-step explanation: just like that

What are the equations of the line through point (6,2) and perpendicular to the line defined by the equation 4x+5y+7=0?

Answers

The equation of the line through point (6,2) and perpendicular to 4x+5y+7=0 is 5x-4y+14=0.

To find the equation of a line perpendicular to another line, we first need to determine the slope of the original line. We can rewrite the original line as 5y = -4x - 7, which is in the slope-intercept form y = (-4/5)x - 7/5. The slope of this line is -4/5.

Since the line we want is perpendicular to this line, it must have a slope that is the negative reciprocal of -4/5. The negative reciprocal is 5/4. We can use the point-slope form of the equation of a line to find the equation of the new line. Plugging in the point (6,2) and the slope 5/4, we get:

y - 2 = (5/4)(x - 6)

Simplifying and rearranging, we get:

5x - 4y + 14 = 0

So, the equation of the line through the point (6,2) and perpendicular to 4x+5y+7=0 is 5x-4y+14=0.

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The equation c=3m+5 represents a line of the best fit for a scarrr plot where c represents the total cost of a taxi in dollars and m represents the number of the trip

Answers

The slope is 3 which represents the cost per mile and the y-intercept is 5 which represents the fixed cost of the taxi.

What is a linear equation?

A connection between a number of variables results in a linear model when a graph is displayed. The variable will have a degree of one.

The linear equation is given as,

y = mx + c

Where m is the slope of the line and c is the y-intercept of the line.

The equation is given below.

C = 3m + 5

Where 'C' represents the cost and 'm' represents the number of miles.

The slope is 3 which represents the cost per mile and the y-intercept is 5 which represents the fixed cost of the taxi.

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The complete question is given below.

The equation c=3m+5 represents a line of the best fit for a scarer plot where c represents the total cost of a taxi in dollars and m represents the number of the trip. What do the numbers 5 and 3 represent?

A design for a Do-Not-Disturb sign is made up of a rectangle with a circle cut out.
8 cm
2.2 cm
17 cm
Do Not Disturb Paper is used to make the sign. Which measurement is closest to the area of the paper surface of the Do-Not-Disturb sign once the circle has been cut out?

Answers

The measurement closest to the area of the paper surface of the Do-Not-Disturb sign once the circle has been cut out is 120.79 [tex]cm^2[/tex].

What is area of rectangle ?

In geometry, a rectangle is a four-sided flat shape with four right angles (90-degree angles) and opposite sides that are parallel and equal in length. The two pairs of opposite sides in a rectangle are congruent (i.e., have the same length), and the perimeter of a rectangle is the sum of the lengths of its four sides.

The area of a rectangle is a measure of the amount of space enclosed by the rectangle and is always expressed in square units. The formula for the area of a rectangle is A = length x width, where A is the area, length is the distance between the two longer sides of the rectangle (also called the length of the rectangle), and width is the distance between the two shorter sides (also called the width of the rectangle). The unit of measurement for the length and width of a rectangle must be the same for the area calculation to be correct.

The area of a rectangle is a useful measure when calculating the amount of material needed to cover a flat surface, such as the floor area of a room or the area of a piece of paper. It is also useful in solving geometry problems, such as finding the area of a composite shape made up of several rectangles or finding the dimensions of a rectangle given its area and one of its side lengths.

According to given information :

To find the area of the Do-Not-Disturb sign once the circle has been cut out, we need to subtract the area of the circle from the area of the rectangle.

The rectangle has dimensions of 17 cm by 8 cm, so its area is:

Area of rectangle = length x width = 17 cm x 8 cm = 136 [tex]cm^2[/tex]

The circle has a radius of 2.2 cm, so its area is:

Area of circle = π[tex]r^2[/tex] = π(2.2 cm)[tex]^2[/tex] ≈ 15.21 [tex]cm^2[/tex]

To find the area of the Do-Not-Disturb sign once the circle has been cut out, we need to subtract the area of the circle from the area of the rectangle:

Area of Do-Not-Disturb sign = Area of rectangle - Area of circle

= 136 [tex]cm^2[/tex] - 15.21 [tex]cm^2[/tex]

≈ 120.79 [tex]cm^2[/tex]

Therefore, the measurement closest to the area of the paper surface of the Do-Not-Disturb sign once the circle has been cut out is 120.79 [tex]cm^2[/tex].

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need help with this asap

Answers

Answer: a

Step-by-step explanation:

look at this point A(3,-4),B(-5,1),C(0,-4),D(4,4),E(-2,0),F(-4,4)
Determine whether the statement about the points is correct

Answers

Answer:

Step-by-step explanation:

An exponential function f(x) passes through the points (2, 360) and (3, 216). Write an equation for f(x).

Answers

[tex]{\Large \begin{array}{llll} y=ab^x \end{array}} \\\\[-0.35em] ~\dotfill\\\\ \begin{cases} x=2\\ y=360 \end{cases}\implies 360=ab^2\implies 360=abb\implies \cfrac{360}{b}=ab \\\\[-0.35em] ~\dotfill\\\\ \begin{cases} x=3\\ y=216 \end{cases}\implies 216=ab^3\implies 216=abb^2\implies \stackrel{\textit{substituting from above}}{216=\left( \cfrac{360}{b} \right)b^2} \\\\\\ 216=360b\implies \cfrac{216}{360}=b\implies \boxed{\cfrac{3}{5}=b} \\\\[-0.35em] ~\dotfill[/tex]

[tex]\stackrel{\textit{since we know that}}{360=ab^2}\implies 360=a\left( \cfrac{3}{5} \right)^2\implies 360=\cfrac{9a}{25} \\\\\\ \cfrac{25}{9}\cdot 360=a\implies \boxed{1000=a}~\hfill {\Large \begin{array}{llll} y=1000\left( \frac{3}{5} \right)^x \end{array}}[/tex]

I’ll give BRAINLIEST if correct need ASAP pls don’t bother looking it up none of them have this equation

Answers

An expression that represents the amount of canned food collected so far by the three friends is 15x^2 + 4xy - 1.

An expression that represents the number of cans the friends still need to collect to meet their goal is 9x^2 - 10xy - 1.

How to write the required expressions?

From the information provided above, we can logically deduce the following number of canned food collection expressions for each friend:

Jessa; 9x^2

Theresa: 6x^2 - 4

Ben: 4xy + 3

Canned food collection goal: 24x^2 - 6xy - 2

Therefore, an expression that represents the total amount of canned food collected so far by the three friends can be calculated and written as follows;

Total amount collected = 9x^2 + 6x^2 - 4 + 4xy + 3

Total amount collected = 15x^2 + 4xy - 1

In order to meet the goal, they need to collect this amount:

Remaining canned foods = 24x^2 - 6xy - 2 - (15x^2 + 4xy - 1)

Remaining canned foods = 24x^2 - 6xy - 2 - 15x^2 - 4xy + 1

Remaining canned foods = 9x^2 - 10xy - 1.

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"Mr. Franklin wants to buy an eraser for every fourth-grade student. There are 12 erasers in each box. There are 7 fourth-grade classes with 24 students in each class. How many boxes of erasers does Mr. Franklin need to buy?"

Answers

14 boxes of erasers should Mr. Franklin need to buy.

What is Division?

A division is a process of splitting a specific amount into equal parts.

Given that Franklin wants to buy an eraser for every fourth-grade student

There are 12 erasers in each box.

There are 7 fourth-grade classes with 24 students in each class

The total number of students=7×24

=168

We need to find the number of boxes are required to buy an eraser for each student.

Since there are 12 erasers in each box, we can divide the total number of students  by 12 to find the number of boxes Mr. Franklin needs to buy:

number of boxes = total students / erasers per box

number of boxes = 168 / 12

number of boxes = 14

Hence, 14 boxes of erasers should Mr. Franklin need to buy.

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Use the given measurements to solve the triangle. Round lengths of sides lo the nearest tenth and angle measures to the nearest degree. a = 500,b = 300 The measure of angle B is approximately (Round to the nearest degree:)

Answers

The measure of angle B in given triangle is approximately 59°.

What do you mean by triangle?

Triangles are fundamental three-sided polygons having three internal angles. Due to the connection between the three vertices, it is one of the basic geometric shapes.

When combined, any two triangle sides will always be longer than the third side. A triangle's surface area is determined by the product of its base and height. The angles are created by connecting the triangle's three sides end to end at a single point. The sum of the triangle's three angles is 180 degrees.

The inverse tangent function, often known as tan1, can be used in this situation. Using the following equation:

tan(B) = adjacent/opposite

where the lengths of the triangle's opposite and adjacent sides, which together make up the desired angle B, are given. In this case, we know that side b is next to angle B and that side an is perpendicular to it.

We thus have:

tan(B) = a/b = 500/300 = 5/3

To find the value of angle B, we can take the inverse tangent of both sides of the equation, using table of trigonometric functions. We get:

B = tan⁻¹(5/3) ≈ 59°

Hence the correct answer is 59°

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suppose that two independent continuous random variables x and y have marginal densities fx(x) and fY(y) respectively. write down expressions that represent the following quantities, leaving definite integrals involving fx and fy as necessary:(a) P(3x−4<5)
(b) P(X>Y)(c) P(X+Y=5)
(d) E(cov(XY))
(e) Mx+y(t) (the mgf of X +Y)

Answers

(a) Expression for  P(3x−4<5) is ∫[from -∞ to 3] fx(x) dx

(b) Expression for P(X>Y)(c) P(X+Y=5) is ∬[over (x,y) satisfying x > y] fx(x) fY(y) dxdy

(c) Expression for E(cov(XY)) is ∬xyfx(x) fY(y) dxdy - E(X)E(Y)

(d) Expression for Mx+y(t) (the mgf of X +Y) is Mx(t) My(t)

(a) P(3x-4<5) can be written as:

P(3x < 9)

P(x < 3)

The expression involving fx(x) for this probability would be:

∫[from -∞ to 3] fx(x) dx

(b) P(X>Y) can be written as:

P(X-Y > 0)

The expression involving fx(x) and fY(y) for this probability would be:

∬[over (x,y) satisfying x > y] fx(x) fY(y) dxdy

(c) P(X+Y=5) can be written as:

P(Y = 5 - X)

The expression involving fx(x) and fY(y) for this probability would be:

∬[over (x,y) satisfying x+y=5] fx(x) fY(y) dxdy

(d) The covariance of X and Y is defined as:

cov(X,Y) = E(XY) - E(X)E(Y)

So, E(cov(X,Y)) can be written as:

∬xyfx(x) fY(y) dxdy - E(X)E(Y)

(e) The MGF of X+Y can be written as:

Mx+y(t) = E(e^(t(X+Y)))

Since X and Y are independent, we can write this as:

Mx+y(t) = E(e^(tX) e^(tY))

Using the fact that X and Y have their own MGFs,

We can write this as:

Mx+y(t) = Mx(t) My(t)

Where Mx(t) and My(t) are the MGFs of X and Y, respectively.

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A rock is thrown upward with a velocity of 22
meters per second from the top of a 45
meter high cliff, and it misses the cliff on the way back down. When will the rock be 9
meters from ground level? Round your answer to two decimal places.

Gravity Formula

Answers

The required time hen will the rock be 9 meters from ground level is 6.40 seconds.

How to find time period of particle between two points?

We can use the kinematic equations of motion to solve this problem. The equation we need is:

h = vi(t) + (1/2)at²

where h is the height of the rock above the ground at time t, vi is the initial velocity (positive when upward), a is the acceleration due to gravity (negative), and t is the time elapsed.

At the top of the cliff, the initial height h₀ = 45 meters and the initial velocity vi = 22 meters per second. When the rock is 9 meters above ground level, its height h = 9 meters. We want to find the time t at which this occurs.

First, we can use the equation of motion to find the time it takes for the rock to reach its maximum height. At the highest point, the velocity of the rock is zero, so vi = 22 m/s, a = -9.8 m/s^2, and h = h₀ + 0. We can solve for the time t1:

[tex]h=v_{i}t_{1}+\frac{1}{2}at_{1} ^{2}[/tex]

[tex]0=22t_{1}-4.9t_{1}^{2}[/tex]

[tex]t_{1} = 4.49 seconds[/tex]

Next, we can use the same equation of motion to find the time it takes for the rock to reach a height of 9 meters on the way back down. This time, the initial height is h0 = 45 - (maximum height) = 45 - 22.45 = 22.55 meters, and the initial velocity is -vi = -22 m/s. We can solve for the time t2:

[tex]h=v_{i}t_{2}+\frac{1}{2}at_{2} ^{2}[/tex]

[tex]9 = 22t_{2} + 4.9*t_{2}^{2}[/tex]

[tex]t_{2} = 1.91 seconds[/tex]

The total time for the rock to reach a height of 9 meters on the way back down is t = [tex]t_{1}+t_{2}[/tex] = 6.40 seconds (rounded to two decimal places).

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the corollary to the polygon angle-sum theorem finds the measure of each interior angle of a regular n-gon. *write a formula to find the measure of each interior angle using n

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The Corollary to the polygon is explained below and the  formula to find the measure of each interior angle is  " (n - 2)×180°/n "   .

The Corollary to the polygon Angle Sum Theorem states that : the sum of the interior angles of a regular n gon is written as :

that means , ⇒ Sum of interior angles = (n - 2) × 180° ...equation(1)

In a regular "n-gon" , all the interior angles are said to be congruent.

Let "x" be  measure of each interior angle of a regular n-gon.

So , we can write ;

⇒ Sum of interior angles = (n)×(x)  ;

Equating the above expressions with equation(1),

⇒ (n)×(x) = (n - 2) × 180°  ;

On Solving for x,

⇒ x = (n - 2)×180°/n  ;

Therefore, the measure of each interior angle of a regular "n-gon" is x = (n - 2)×180°/n  .

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A proportioal relationship is formed when y = 4 and x =-16. What is the value of y when x equals 8?

Answers

Answer:

-2

Step-by-step explanation:

Standard equation of a proportional relationship:

y = kx

We use the given point to find k.

4 = k × (-16)

k = 4/(-16)

k = -1/4

The equation of this proportional relationship is

y = -1/4 x

Now we use x = 8 in the equation just above to find its corresponding y value.

x = 8

y = -1/4 × 8

y = -2

Answer: -2

calculate the maximum system inventory for this part. use the rounded value of the number of containers from part a. round your answer to the nearest whole number.

Answers

To calculate the number of containers that Heavey Compressors should be using, we need to determine the number of parts that need to be produced per day and divide it by the number of parts that can fit in each container.

100 parts per 8-hour day / 7 parts per container

= 14.2857 containers (round up to 15)

=15 containers

Therefore,  Heavey Compressors be using 15 containers.

Maximum inventory levels = reorder point + reorder quantity – [minimum consumption × minimum lead time].

= 100+15-[12.5x8]

= 115-100

= 15

Therefore, the maximum system inventory for this part is 15.

The maximum stock position is the largest number of goods a company can store to give its guests with service at the smallest possible cost. It's vital to keep force control in line with demand.

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Complete question:

Heavey Compressors uses a lean production assembly line to make its compressors. In one assembly area, the demand is 100 parts per eight-hour day. It uses a container that holds seven parts. It typically takes about five hours to round-trip a container from one work center to the next and back again. Heavey also desires to hold 20 percent safety stock of this part in the system. a. How many containers should Heavey Compressors be using? Do not round intermediate calculations. Round your answer up to the nearest whole number. containers b. Calculate the maximum system inventory for this part. Use the rounded value of the number of containers from part answer to the nearest whole number. parts c. If the safety stock percentage is reduced to zero, how would this impact the number of containers, all else being equal? calculations. Round your answer up to the nearest whole number. The number of containers will to containers.

PLEASE HELP! (PRE CALC)
Jacy keeps track of the amount of average monthly rainfall in her hometown. She determines that the average monthly rainfall can be modeled by the function ...where ...represents the average monthly rainfall in centimeters and ... represents how many months have passed. If ... represents the average rainfall in July, in which months does Jacy’s hometown get at least 10.5 centimeters of rainfall? Show all of your algebraic reasoning to support your final answer.

Answers

Answer:

he months where Jacy's hometown gets at least 10.5 centimeters of rainfall are July (x = 7) and all the months after July, which are August (x = 8), September (x = 9), October (x = 10), November (x = 11), and December (x = 12).

Step-by-step explanation:

The given function is:

f(x) = 0.2x^2 - 1.8x + 6.5

where x represents the number of months passed and f(x) represents the average monthly rainfall in centimeters.

To find the months where the average rainfall is at least 10.5 centimeters, we need to set the function f(x) greater than or equal to 10.5 and solve for x:

0.2x^2 - 1.8x + 6.5 ≥ 10.5

0.2x^2 - 1.8x - 4 ≥ 0

Multiplying both sides by 5, we get:

x^2 - 9x - 20 ≥ 0

We can factor the left-hand side of the inequality as:

(x - 5)(x - 4) ≥ 0

The solution to this inequality is the set of values of x that make the inequality true. This includes the intervals where:

(x - 5) ≥ 0 and (x - 4) ≥ 0, which gives x ≥ 5

OR

(x - 5) ≤ 0 and (x - 4) ≤ 0, which gives x ≤ 4

Thus, the months where Jacy's hometown gets at least 10.5 centimeters of rainfall are July (x = 7) and all the months after July, which are August (x = 8), September (x = 9), October (x = 10), November (x = 11), and December (x = 12).

Jacy's hometown gets at least 10.5 centimeters of rainfall in the months of September, September of the following year, September of the year after that, and so on.

What is inequality?

An inequality is a relation between two numbers or expressions that are not equal.

It can show which of them is greater or smaller by using symbols like < or >. It can also be a statement of fact about the order relationship of quantities.

According to the question given,

We need to solve the inequality:

A(t) ≥ 10.5

Substituting the given function, we get:

2.3sin(π/6)t ≥ 10.5

sin(π/6)t ≥ 4.57.

Since the sine function has a maximum value of 1, the inequality is only satisfied when:

sin(π/6)t = 1

Solving for t, we get:

π/6t = π/2 + 2πk or π/6t = 3π/2 + 2πk

where k is any integer.

Simplifying each equation, we get:

t = 3 + 12k or t = 9 + 12k, where k is any integer.

Therefore, the only solution is given by:

t = 9 + 12k

where k is any integer.

Hence, Jacy's hometown gets at least 10.5 centimeters of rainfall in the months of September, September of the following year, September of the year after that, and so on.

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What is the area of the quadrilateral 10cn 16cm 22cm

Answers

The area of the quadrilateral is 140 m^2.

What is a quadrilateral?

For closed figure made by 4 line segments joined end to end in series is called a quadrilateral.

A parallelogram in which adjacent sides are perpendicular to each other is called a rectangle.

A rectangle is always a parallelogram and a quadrilateral but reverse statement could be not be true.

Area of the quadrilateral = 2 x area of the traingle

Thus, Area of the triangle = 1/2 x base  x height

Area of 1 triangle = 1/2 x 10 x 16

Area of 1 triangle = 80 m^2

Area of the quadrilateral = 2 x 80

Area of the quadrilateral = 140 m^2

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The complete question is;

What is the area of the quadrilateral if the dimensions of the quadrilateral  are 10cm, 16cm and 22cm

A company wants to select no more than 2 projects from a set of 4 possible projects. Which of the following constraints ensures that no more than 2 will be selected?
A.X1 +X2 +X3 +X4 =1B.X1 +X2 +X3 +X4 ≤2C. X1 − X2 ≥ 0D. X1 − X2 − X3 ≤ 0

Answers

The correct constraint that ensures no more than 2 projects will be selected is: (B). X1 + X2 + X3 + X4 ≤ 2

This restriction specifies that the corporation can choose no more than two projects since the total of the choice factors X1, X2, X3, and X4 is less than or equal to 2. The other restrictions do not specifically place a cap on the number of chosen projects.

The corporation must choose exactly one project, but no more than two, in accordance with Constraint A, which says that the total of the decision variables must equal 1.

Binary constraint C guarantees that X1 is more than or equal to X2, but it does not place a cap on the number of projects that can be chosen.

The three-way constraint D does not guarantee that the corporation chooses no more than two projects, but it does limit the sum of X1, X2, and X3 to be less than or equal to X4.

Therefore, the correct option is (B). X1 + X2 + X3 + X4 ≤ 2

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This is the first part of a three-part problem. Express 18 sqrt 8 in the form a sqrt b where a and b are integers and b is as small as possible. Hint(s): Factor sqrt(8) as the product of two square roots, one of which is the square root of a perfect square. Part 2,Express 8 sqrt 18 in the form a sqrt b, where a and b are integers and b is as small as possible.part 3 18 sqrt 8 - 8 sqrt 18 +what is sqrt n?

Answers

(Part 1)  The expression [tex]18\sqrt{8}[/tex] can be written in the form [tex]a\sqrt{b}[/tex] as [tex]36\sqrt{2}[/tex], where a and b are integers and b is as small as possible.

(Part 2)  The expression [tex]8\sqrt{18}[/tex] can be written in the form [tex]a\sqrt{b}[/tex] as [tex]16\sqrt{3}[/tex].

(Part 3)  The expression [tex]18\sqrt{8}[/tex] - [tex]8\sqrt{18}[/tex] + [tex]\sqrt{n}[/tex] is equal to ([tex]36\sqrt{2}[/tex] - [tex]16\sqrt{3}[/tex]) + [tex]\sqrt{n}[/tex].

(Part 1) Expressing [tex]18\sqrt{8}[/tex] in the form [tex]a\sqrt{b}[/tex], where a and b are integers and b is as small as possible:

We can factor [tex]\sqrt{8}[/tex] as [tex]\sqrt{2}[/tex]* [tex]\sqrt{4}[/tex]

So, [tex]18\sqrt{8}[/tex]= 18 * [tex]\sqrt{2}[/tex] *[tex]\sqrt{4}[/tex] = 18 *[tex]\sqrt{2}[/tex] * 2 = [tex]36\sqrt{2}[/tex]

So the expression [tex]18\sqrt{8}[/tex] can be written in the form [tex]a\sqrt{b}[/tex] as [tex]36\sqrt{2}[/tex], where a = 36 and b = 2.

(Part 2) Expressing [tex]8\sqrt{18}[/tex] in the form [tex]a\sqrt{b}[/tex], where a and b are integers and b is as small as possible:

We can factor [tex]\sqrt{18}[/tex] as [tex]\sqrt{3}[/tex] * [tex]\sqrt{6}[/tex]

So, [tex]8\sqrt{18}[/tex] = 8 * [tex]\sqrt{3}[/tex] * [tex]\sqrt{6}[/tex]

[tex]8\sqrt{18}[/tex]= 8 * [tex]\sqrt{3}[/tex] * [tex]\sqrt{2}[/tex] * [tex]\sqrt{3}[/tex]

[tex]8\sqrt{18}[/tex]= 8 *[tex]\sqrt{6}[/tex]* [tex]\sqrt{2}[/tex]

[tex]8\sqrt{18}[/tex]= 8 * [tex]\sqrt{2}[/tex] * [tex]\sqrt{6}[/tex]

[tex]8\sqrt{18}[/tex]= 8 * 2 * [tex]\sqrt{3}[/tex]

[tex]8\sqrt{18}[/tex]= [tex]16\sqrt{3}[/tex]

So the expression [tex]8\sqrt{18}[/tex] can be written in the form [tex]a\sqrt{b}[/tex] as [tex]16\sqrt{3}[/tex], where a = 16 and b = 3.

(Part 3) [tex]18\sqrt{8}[/tex] - [tex]8\sqrt{18}[/tex] + [tex]\sqrt{n}[/tex]:

We can substitute the simplified forms of [tex]18\sqrt{8}[/tex] and [tex]8\sqrt{18}[/tex] from parts 1 and 2 into this expression:

[tex]18\sqrt{8}[/tex] - [tex]8\sqrt{18}[/tex] + [tex]\sqrt{n}[/tex] = [tex]36\sqrt{2}[/tex] - [tex]16\sqrt{3}[/tex] + [tex]\sqrt{n}[/tex] = ([tex]36\sqrt{2}[/tex] - [tex]16\sqrt{3}[/tex]) + [tex]\sqrt{n}[/tex].

So, the expression [tex]18\sqrt{8}[/tex] - [tex]8\sqrt{18}[/tex] + [tex]\sqrt{n}[/tex] is equal to ([tex]36\sqrt{2}[/tex] - [tex]16\sqrt{3}[/tex]) + [tex]\sqrt{n}[/tex] where n is an unknown constant.

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if half the students at quincy university have blue eyes, which of the following events is most probable?

Answers

In a Quincy College class consisting of 15 students 12 or more have blue eyes.

If half the students at Quincy College have blue eyes, then the most probable event is that a randomly selected student from the college will have blue eyes.

This is because, if half the students have blue eyes, then there is a greater chance that a randomly selected student will have blue eyes than any other eye color.

For example, if we were to consider the event of a randomly selected student having green eyes, this would be less probable because fewer than half the students are likely to have green eyes.

Therefore, the most probable event is that a randomly selected student from Quincy College will have blue eyes.

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Consider the accompanying data on flexural strength (MPa) for concrete beams of a certain type.
11.8 7.7 6.5 6.8 9.7 6.8 7.3
7.9 9.7 8.7 8.1 8.5 6.3 7.0
7.3 7.4 5.3 9.0 8.1 11.3 6.3
7.2 7.7 7.8 11.6 10.7 7.0
a) Calculate a point estimate of the mean value of strength for the conceptual population of all beams manufactured in this fashion. [Hint: ?xi = 219.5.] (Round your answer to three decimal places.)
MPa
State which estimator you used.
x
p?
s / x
s
x tilde
(b) Calculate a point estimate of the strength value that separates the weakest 50% of all such beams from the strongest 50%.
MPa
State which estimator you used.
s
x
p?
x tilde
s / x
(c) Calculate a point estimate of the population standard deviation ?. [Hint: ?xi2 = 1859.53.] (Round your answer to three decimal places.)
MPa
Interpret this point estimate.
This estimate describes the linearity of the data. This estimate describes the bias of the data. This estimate describes the spread of the data. This estimate describes the center of the data.
Which estimator did you use?
x tilde
x
s
s / x
p?
(d) Calculate a point estimate of the proportion of all such beams whose flexural strength exceeds 10 MPa. [Hint: Think of an observation as a "success" if it exceeds 10.] (Round your answer to three decimal places.)
(e) Calculate a point estimate of the population coefficient of variation ?/?. (Round your answer to four decimal places.)
State which estimator you used.
p?
x tilde
s
s / x
x

Answers

Mean value for the given data is 8.129, median = 7.7, Standard deviation is 1.699, Probability for MPa value greater than 10 is 0.148 and Coefficient of variation = 20.9

a) To estimate the mean value, we have to calculate all the observations and divide it by number of observations.

  x = ∑ xi / n = 219.5/27 = 8.129

So here the estimator used is x

b) To estimate the strength value or to separate weakest 50% from strongest 50%, we have to calculate the median. For that we have to arrange in ascending order and find the middle most term.

Since  n is odd, middle term is (n+1)/2 th term = (27+1)/2 = 28/2 = 14th term. Ascending order is given as image. the 14th term is 7.7.

c) Next we have to calculate standard deviation

 σ =  √(∑xi² - (∑x)²/n)/(n-1) = [1859.53 - (219.5²/27)] /(27-1)

                                          = (1859.53- 1784.454) / 26

                                         = 1.699

d) We have to calculate the probability flexural strength greater than 10. Here there are 4 values above 10.

So, p = 4/27 = 0.148

e) Coefficient of variation = (σ/x) ×100

                                           = [tex]\frac{1.699}{8.129} * 100[/tex]

                                            = 20.9

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In these questions, assume that R is the reduced echelon form of the augmented matrix for a system of equations. 1.20 If the system has three unknowns and R has three nonzero rows, then the system has at least one solution. 1.21 If the system has three unknowns and R has three nonzero rows, then the system can have an infinite number of solutions. (1.22)The system below has an infinite number of solutions: 2x + 3y + 5z + 6 - 7 - 8v = 0 3x - 4y + 7z + + 8 + 5y = 0 -7x + 9y - 2z -- 4w - 5u + 2y = 0 --5x - 5y +92 +3w + 2u + 7y = 0 -9x + 3y - 9z+5w - 3u - 4y = 0

Answers

1.20 If the system has three unknowns and R has three nonzero rows, then the system has at least one solution.

This statement is true.

1.21 It is only when the rank of the coefficient matrix is less than the number of unknowns that the system can have infinitely many solutions

1.22 The system below has an infinite number of solutions:

2x + 3y + 5z + 6 - 7 - 8v = 0

3x - 4y + 7z + + 8 + 5y = 0

-7x + 9y - 2z -- 4w - 5u + 2y = 0

--5x - 5y +92 +3w + 2u + 7y = 0

-9x + 3y - 9z+5w - 3u - 4y = 0

This statement is true.

When we perform row reduction on a system of linear equations, the resulting reduced row echelon form (R) will have the same number of nonzero rows as the rank of the coefficient matrix.

In other words, if R has three nonzero rows, then the rank of the coefficient matrix is also 3.

If the rank of the coefficient matrix is equal to the number of unknowns, then the system has a unique solution.

However, if the rank of the coefficient matrix is less than the number of unknowns, then the system has either no solution or infinitely many solutions.

But in this case, since the rank is equal to the number of unknowns, the system must have at least one solution.

1.21 If the system has three unknowns and R has three nonzero rows, then the system can have an infinite number of solutions.

This statement is false. If R has three nonzero rows, then the rank of the coefficient matrix is also 3.

If the rank of the coefficient matrix is equal to the number of unknowns, then the system has a unique solution.

It is only when the rank of the coefficient matrix is less than the number of unknowns that the system can have infinitely many solutions.

1.22 The system below has an infinite number of solutions:

2x + 3y + 5z + 6 - 7 - 8v = 0

3x - 4y + 7z + 8 + 5y = 0

-7x + 9y - 2z - 4w - 5u + 2y = 0

-5x - 5y + 92 + 3w + 2u + 7y = 0

-9x + 3y - 9z + 5w - 3u - 4y = 0

This statement is true.

To check if the system has infinitely many solutions, we need to check the rank of the coefficient matrix and the rank of the augmented matrix. In this case, the rank of the coefficient matrix is 3, which is less than the number of unknowns (5).

Also, when we perform row reduction on the augmented matrix, we get the following reduced row echelon form:

1 0 -1 0 1 0

0 1 2 0 -1 0

0 0 0 1 2 0

0 0 0 0 0 1

0 0 0 0 0 0

Since the rank of the augmented matrix is less than the number of unknowns, the system has infinitely many solutions.

The variables with free parameters are z, u, and y, which can take any value.

The other variables can be expressed in terms of these free parameters.

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How did you input your values to generate random data? Would you have preferred to use Linux scripts and/or another scripting language to generate the SQL file? Part 3 - Deliverables for this assignment: 1) schema.sql 2) data.sql 3) any php files used to generate random data 4) any input files used to generate data 5) 1-2 page PDF report All files are detailed above in the assignment. ROP SCHEMA IF EXISTS SuperStore; what is walla walla community college You toss two dimes 24 times and record the results. Use the table to find the experimental probability of tossing two tails. What are some examples of vestigial structures? Which statement is true?A. There are more neurons than glia in the brain.B. Neurons are all the same shape and size.C. Some neurons have no axons.D. Glia are not necessary for normal brain functioning. If a tap drips at 0.15 litres per second,how long will it take to drip 30 litres Which two adjectives best describes Faith's behavior to her husband Young GoodmanBrown, as portrayed in this scene? (Choose two answers.)1.teasing2.scornful3.pleading4.suspicious5.obedient using equation explain what happens when hydrogen peroxide is added to lead which of these grist components is sometimes used because it is gluten free?a. Malted wheatb. Malted Sorghumc. Malted Barleyd. Malted Oats which legendary athlete won positive reviews for his singing role on broadway?a. Magic Johnsonb. Joe DiMaggioc. Joe Namathd. Muhammad Ali This weeks chapter of The Sports Gene focused on the "10,000 hours rule", or the idea that a person can become an elite athlete by deliberately practicing their sport over thousands of hours. The main example that was looked at was the case of high jumper, Stefan Holm, who is one of the top high jumpers in the world despite the disadvantage of having a shorter height. He started training from a very young age and follows a very specific training plan which has led him to success in the sport. Comparatively, the book looked at another high jumper, Donald Thomas, who picked up the sport later in life and was not as trained in the technicalities of high jumping.One of the distinguishing characteristics of the athletes that is interesting is the achilles tendon in each of them. When Holms achilles was studied, they found that it had become so stiff over time that it required quite a bit of force to bend it, making it act as a spring. This is a characteristic that was developed over time with training. Thomas, on the other hand had a very long achilles relative to his height which is something that cannot be developed over time. It is interesting to see how different characteristics of the achilles are beneficial for the same sport and that they are acquired in different ways.I dont believe that the 10,000 hour rule is relevant to all sports or to all people. In the case of Holm, it probably did apply to him due to him not being naturally built like most professional high jumpers. He was obviously very dedicated to the sport and putting in the deliberate practice is what helped him become successful. However, some people are naturally gifted athletes who can pick up a sport much more easily than the average person.Refer to one or more details from the text to support your understanding of what made Donald Thomas a successful high jumper? a boy on a skateboard pushes off the ground with his foot. he and the skateboard accelerate down the sidewalk due to the force the following statements are all true. which one counts as an exception to the rule in being unusual for our solar system?a. Venus does not have a moon.b. Jupiter has a very small axis tilt.c. The diameter of Earth's Moon is about 1/4 that of Earth.d. Saturn has no solid surface.