BRAINLIST PLS HELP A 0.05 kg arrow is fired at a velocity towards a 1.2 kg apple. The arrow sticks in the apple and both move at 3.6m / s . What was the initial velocity of the arrow?

3.17 is the meaning of the x - value when y = 81. This equation can be solved using the concept of equation solving.

A statistical word used to express a straight-line relationship between two variables is a linear relationship (or linear association). Graphs and mathematical equations of the type y = mx + b can both be used to represent linear connections. The quantity of hours worked in relation to income is an illustration of a linear connection. The independent variable would be the number of hours worked, and the dependent variable would be the amount of money made.

Linear relationship can be represented by the equation y = 62 + 6x where y represents the expected quiz score and x represents hours spent on homework that week.

when y = 81, then: y = 62 + 6x

or, 81 = 62 + 6x

or, 6x = 19

or, x = 3.17

3.17 is the meaning of the x - value when y = 81.

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The variance of the error anticipated value should therefore be constant when plotting each individual error against the expected value.

What is regression line?

A regression line is a line that in statistics best depicts the behavior of a set of data. It is, in other words, a line that best fits the trend of the data at hand.

The standard deviation and variance of the residuals are assumed to be constant for all values of independent variables in regression analysis under the concept of constant variance.

The variance of the error anticipated value should therefore be constant when plotting each individual error against the expected value.

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The correct answer is option 4. The equation that is equivalent to 12 3/x + 15 = 36 is 3/x + 15 = 24.

To isolate x in the equation, we need to subtract 15 from both sides, which gives us 3/x = 9. Then, we need to multiply both sides by x, which gives us 3 = 9x. Finally, we divide both sides by 9 to get x = 1/3. This means that the value of x that makes the equation true is 1/3. To verify, we can plug this value back into the original equation and see if both sides are equal.

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The price of a box of cereal under the price leadership model is 16 dollars.

The price of a box of cereal under the price leadership model can be calculated by finding the intersection of the marginal cost curve (MC) of the dominant firm and the marginal revenue curve (MR) of the dominant firm. The MR curve has twice the slope of the demand curve, so the equation for the MR curve is MR = 24 – 2Q, where Q is the quantity of boxes of cereal. The MC curve is horizontal, so the equation for the MC curve is MC = 12. The intersection of the two curves occurs at the quantity Q = 8 million boxes of cereal per year, and the corresponding price is P = 16 dollars per box of cereal. Therefore, the price of a box of cereal under the price leadership model is 16 dollars.

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a) Two vectors are proportional then compa b = compa a

b) Two vectors are parallel when proja b = proja a

A vector is a mathematical object with both magnitude and direction. In this problem, we have two vectors, a and b, which are assumed to be nonzero

(a) For two vectors a and b, the dot product (also known as the scalar product or inner product) is a scalar quantity that measures the extent to which the vectors are pointing in the same direction. The dot product of two vectors is defined as

=> compa b = ||a|| ||b|| cos(θ), where ||a|| and ||b|| are the magnitudes of the vectors and θ is the angle between them.

Hence,

=> compa b = compb a

if and only if the vectors are equal or parallel, meaning they have the same direction or are pointing in opposite directions.

(b) The projection of a vector onto another vector is the vector that points in the same direction as the second vector and has the same magnitude as the component of the first vector that lies in that direction. The projection of a vector a onto a vector b is given by

=> proja b = (compa b / compb b) b.

Since the dot product is commutative, it follows that

=> proja b = proj b

if and only if the vectors are equal.

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In this scenario, Jane Dilford has health insurance with a monthly premium of $30. The insurance policy has a $250 deductible, which is the amount that Jane must pay out of pocket before her insurance coverage kicks in. The policy does not have a coinsurance payment, which means that Jane does not have to pay a percentage of the bill once her deductible is met.

The company's payment was:

80% of the bill less the deductible =

0.8 x ($2,550 - $250) = 0.8 x $2,300 = $1,840

Jane's total cost (not including monthly premium) was:

Bill - Company's payment = $2,550 - $1,840 = $710

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Aurther have jump 0.50575 feet more to break the record.

The fractional bar is a horizontal bar that divides the numerator and denominator of every fraction into these two halves.

Given:

The high school jump record = 24 ft 5 1/4 inch

                                                 = 24 ft 21/4 inch = 24.4375 ft

and, Aurther jump is = 23.958 ft

So, Aurther have jump

= 24.46375 - 23.958

= 0.50575 feet more

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To find the height of a right cone if we are given the diameter and the slant:

The characteristics of cones include:

The properties of cones, including:

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Answer:

32 r26

Step-by-step explanation

First, you ask yourself if 27 can go into 8 and well it can't because 8 is smaller than 27 so you do 27 can go into 89! It can go into 89, 3 times.

27x3 is 81. 89-81 is 8 you bring down the 0.

27 can go into 80 which is 2 times. 27x2 is 54 and doesn't go over.

80-54 is 26. 27 can't go into 26 so your remainder is 26.

Hope this helped !!

The total number of blue jewelry is 52, whereas the total number of green jewelry is 13.

In algebra, a percentage is really a number any ratio that is presented as a part of 100. Often, the acronyms "percent growth.," "percentage points," and "personal computer" are utilized as well. But it is commonly indicated by the percent sign, "%." The % amount will have no dimensions. Percentages are essentially fractions when the denominator is 100. Can use percent sign (%) to indicate that perhaps a number is a percentages by placing it next to it. For instance, you score a 75% if you properly answer 75 out of 100 respondents on a test (75/100). Divide the payment by the aggregate and multiply the results by 100 to calculate percentages. The formula for calculating the percentage is (value/total) x 100%.

given

80 percent of the jewelry in the equation is blue:

80/100 * 65 = 52.

Let the quantity of blue jewelry be x and the number of green jewelry be y.

20% of the jewelry is green, so

20/100 * 65, or 13

The total number of blue jewelry is 52, whereas the total number of green jewelry is 13.

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The function [tex]f(x) = x^{x^{\frac{1}{x} }}[/tex] is increasing on the interval [tex](0, e^{1/e})[/tex] and decreasing on the interval [tex](e^{1/e}, \infty).[/tex]

A function is a mathematical rule that assigns a unique output or value for each input in its domain.

In this case, the function,

[tex]= > f(x) = x^{x^{\frac{1}{x} }}[/tex]

takes in a real number as input and returns its output.

And we can determine the intervals on which the function is increasing or decreasing by analyzing its first derivative.

In order to find the first derivative of f(x), we use calculus techniques such as power rule and chain rule.

Taking the derivative yields

[tex]= > f'(x) = (1 + x log(x)x^{x^{\frac{1}{x} }} -1)[/tex]

This derivative is positive on the interval [tex](0, e^{1/e})[/tex] where e is the mathematical constant approximately equal to 2.718,

so the function is increasing on this interval.

The function is decreasing on the interval [tex](e^{1/e}, \infty).[/tex]

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Answer:

slope: -3/2  y-intercept: -1

Answer: -32

Step-by-step explanation:

There exists two opposite sets of angles ( antipodal angles are equal).

The diametrically opposed points on a sphere are known as antipodal points in mathematics (the specific qualities of such a definition are that a line drawn from the one to the other passes through the center of the sphere so forms a true diameter).

If two separate points on a sphere lie along the same line passing through the center of the sphere, they are said to be diametrically opposed points. Antipodal points on the sphere are also known as diametrically opposed points.

We may determine from the image that the two triangles above are isosceles triangles ( the bottom angles one equal).

There are two sets of opposite angles ( antipodal angles are equal).

Let the equation be

[tex]$x & =180^{\circ}-\left(\frac{180^{\circ}-a}{2}+b\right) \\[/tex]

substitute the values in the above equation, we get

[tex]$& =180^{\circ}-\left(\frac{180^{\circ}-62^{\circ}}{2}+63^{\circ}\right) \\[/tex]

simplifying the equation, then

[tex]& =180^{\circ}-\left(59^{\circ}+63^{\circ}\right) \\[/tex]

= 58°

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The value of x in the following triangles is 59 degrees.

One of the fundamental shapes in geometry is the triangle. The smallest polygon is a triangle. It has three vertices and three edges. The symbol for a triangle having the vertices P, Q, and R is PQR. The three sides and three angles that make up a triangle are referred to as its elements. The two crucial properties of a triangle are the external angle property and the angle sum property.

Given that,

a = 62 degree and

b = 62 degrees.

From the given figure we see that the two sides containing angle a are equal.

Thus, the value of the two angles containing angle a is:

a + x + x = 180

a + 2x = 180

62 + 2x = 180

2x = 180 - 62

2x = 118

x = 59

The value of x is 59. The angle x and the exterior angle of x form a straight line.

Thus,

x + y = 180

59 + y = 180

y = 121

The sum of angle y and the interior angle of triangle containing angle x is 180:

y + z = 180

121 + z = 180

z = 59

Now, for triangle containing angle b, the two sides are equal hence the angle corresponding to the side is b = 62.

The angle b and its exterior angle form a straight line. Thus,

b + c = 180

62 + c = 180

c = 118

The angle c and one interior angle of triangle form a straight line thus,

c + d = 180

118 + d = 180

d = 62

Now, the angles of the triangle containing angle x is:

z = 59 and d = 62

The sum of all the sides of triangle is 180, thus:

x + z + d = 180

x + 59 + 62 = 180

x = 59

Hence, the value of x is 59.

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The digits 2, 3, 4, 7 and 8 will be put in random order to make a positive five-digit integer and the probability that the resulting integer will be divisible by 11, then the common fraction = [tex]\frac{1}{10}[/tex]

The digits 2, 3, 4, 7 and 8 will be put in random order to make a positive five-digit integer.

The probability that the resulting integer will be divisible by 11.

The way to tell if a number is divisible by 11 is the following :

If the sum of every other digit, starting with the first is equal to the sum of every other digit, starting with the second, then the number is evenly divisible by 11.

Our given numbers are 2, 3, 4, 7 and 8.

Which 3 numbers summed are equivalent to the sum of other 2.

We can see,

2 + 3 + 7 = 12

8 + 4 = 12

There are 3! = 6 ways to use the 2, 3, 7, and

2! = 2 ways to use the 8 and 4.

[tex]6*2[/tex] = 12

There are 5! = [tex]5*4*3*2*1[/tex] = 120 different possibilities

So,

We can write,

= [tex]\frac{12}{120}[/tex]

= [tex]\frac{1}{10}[/tex]

Therefore,

The digits 2, 3, 4, 7 and 8 will be put in random order to make a positive five-digit integer and the probability that the resulting integer will be divisible by 11, then the common fraction = [tex]\frac{1}{10}[/tex]

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The digits 2, 3, 4, 7, and 8 will be put in random order to make a positive five-digit integer, and the probability that the resulting integer will be divisible by 11, then the common fraction = 1/10

The digits 2, 3, 4, 7, and 8 will be put in random order to make a positive five-digit integer.

The probability that the resulting integer will be divisible by 11.

The way to tell if a number is divisible by 11 is the following :

If the sum of every other digit, starting with the first is equal to the sum of every other digit, starting with the second, then the number is evenly divisible by 11.

Our given numbers are 2, 3, 4, 7, and 8.

Which 3 numbers summed are equivalent to the sum of the other 2.

We can see,

2 + 3 + 7 = 12

8 + 4 = 12

There are 3! = 6 ways to use the 2, 3, 7, and

2! = 2 ways to use the 8 and 4.

6*2 = 12

There are 5! = 120 different possibilities

So,

We can write,

= 12/120

= 1/10

Therefore,

The digits 2, 3, 4, 7 and 8 will be put in random order to make a positive five-digit integer and the probability that the resulting integer will be divisible by 11, then the common fraction = 1/10

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The effect of the slower speed is paul would be late by 10 minutes.

Speed is defined as when an object is in motion, the distance covered by that object per unit of time is called speed.

Here,
Paul planned a 160-mile trip and assumed he would travel at an average rate of 50 miles per hour.
Estimated time = 160 / 50 = 3.2 hours

After 2 hours at his planned rate of travel, traffic slowed and he was only able to travel 40 miles per hour for the remainder of the trip.

Actual time = 2 + [160 - 2×50]/40
Actual time = 3.5 hours

Thus, the effect of the slower speed is paul would be late by 10 minutes.

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The solution is Option C , Option D.

The inequality equation is x > 5

Inequalities are the mathematical expressions in which both sides are not equal. In inequality, unlike in equations, we compare two values. The equal sign in between is replaced by less than (or less than or equal to), greater than (or greater than or equal to), or not equal to sign.

In an inequality, the two expressions are not necessarily equal which is indicated by the symbols: >, <, ≤ or ≥.

Given data ,

Let the inequality equation be represented as A

Now , the equation will be

Substituting the values in the equation , we get

-3 ( 2x - 5 ) < 5 ( 2 - x )

On simplifying the equation , we get

-3 ( 2x ) - 3 ( -5 ) < 10 - 5x

-6x + 15 < 10 - 5x

Adding 6x on both sides of the equation , we get

x + 10 > 15

Subtracting 10 on both sides of the equation , we get

x > 5

Hence , the inequality equation is x > 5

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Answer:

Step-by-step explanation:

Let x be the number of black ink cartridges sold and y be the number of color ink cartridges sold. We know that:

x + y = 36 (total number of cartridges sold)

18.99x + 22.99y = 723.64 (total amount of money earned)

We can use the first equation to solve for one variable in terms of the other and substitute that expression into the second equation to get a single equation in one variable, which can then be solved. For example:

y = 36 - x

18.99x + 22.99(36 - x) = 723.64

18.99x + 827.64 - 22.99x = 723.64

-4x = -104

x = 26

So, 26 black cartridges were sold and 36 - 26 = 10 color cartridges were sold.

Answer:

option 2

Step-by-step explanation:

The percent of the day you spend in the school is 29.1 % if time You spend 7 hours of your day at school.

What is percentage ?

Percentage can be defined as the product of ratio of given value, total value and hundred.

Given ,

TIME You spend 7 hours of your day at school.

So we have to find About what percent of the day do you spend at school

so,

The time spent in school = 7 hours

Total hours in a day = 24

So, percentage could be = 7 / 24   * 100

= 0.291 * 100

= 29. 1 %

Therefore, The percent of the day you spend in the school is 29.1 % if time You spend 7 hours of your day at school.

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The derivative of the expression is y' = [tex]-\frac{-y}{x}[/tex].

What is derivative?

Differentiation refers to the method of determining the derivative. Anti-differentiation is the term for the opposite process. We'll calculate the derivative of the function y = f. (x). It represents the rate at which the value of y varies in relation to the change in the variable x. It is referred to as the "f" derivative with regard to the variable x.

Here the given expression is [tex]x^2y^2=10[/tex] then

=> f(x,y) = [tex]x^2y^2-10[/tex]

To find [tex]\frac{dy}{dx}[/tex] by using the formula [tex]\frac{dy}dx}=-\frac{f_x}{f_y}[/tex] and first find [tex]f_x , f_y[/tex]

Now ,

=> [tex]f_x =\frac{d}{dx}x^2y^2-10[/tex]

=> [tex]f_x=2xy^2[/tex]

Now,

=> [tex]f_y=\frac{d}{dy}x^2y^2-10[/tex]

=> [tex]f_y=2x^2y[/tex]

Now substitute into formula then

=> [tex]y' = -\frac{2xy^2}{2x^2y}[/tex]

=> y' = [tex]-\frac{-y}{x}[/tex]

Hence the derivative of the expression is y' = [tex]-\frac{-y}{x}[/tex].

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The radius of the circle is 4millimeters

The circumference is the perimeter of a circle or ellipse. That is, the circumference would be the arc length of the circle, as if it were opened up and straightened out to a line segment. More generally, the perimeter is the curve length around any closed figure.

The circumference of a circle is given as:

C = 2πr

where C is the circumference and r is the radius

25.12 = 2× 3.14×r

25.12 = 6.28r

r = 25.12/ 6.28

r = 4 millimeters

therefore the radius of the circle is 4 millimeters

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The table representing a linear relationship.

x −2 0 2 4

y −1 0 1 2

Is represented by

The suitable graph will be the graph that pass through the points as in the table

graph of a line passing through the points negative 2 comma negative 4 and 0 comma 0

x -2, 0

y -4, 0

this is not in the table and therefore wrong

graph of a line passing through the points negative 2 comma negative 1 and 0 comma 0

x -2, 0

y -1, 0

this is in the table and therefore correct

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The average decrease in temperature of the liquid from 1:00 p.m. to 10:00 p.m. is approximately 0.8°C per hour.

The concept used in this calculation is average rate of change. The average rate of change is the change in a quantity (in this case, temperature) over a certain time period (in this case, 9 hours), expressed as a ratio or per unit of time. In this calculation, we are finding the average decrease in temperature per hour.

To find the average decrease, we need to find the difference between the starting temperature (14.7°C) and the final temperature (-6.8°C), and then divide by the number of hours that passed, which is 9 hours.

Therefore:

(14.7°C - (-6.8°C)) / 9 hours = 21.5°C / 9 hours = 2.39°C per hour

Rounding to the nearest whole number, we have:

2.39°C per hour ≈ 2.4°C per hour = 0.8°C per hour.

So, The average decrease in temperature of the liquid from 1:00 p.m. to 10:00 p.m. is approximately 0.8°C per hour.

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The average rate of change is the idea used in this calculation. The change in a number (in this case, temperature) over a predetermined amount of time (in this case, 9 hours), expressed as a ratio or per unit of time, is known as the average rate of change. We are calculating the average temperature drop per hour in this computation.

We must calculate the difference between the initial temperature (14.7°C) and the final temperature (-6.8°C) and divide it by the number of hours that elapsed, which is 9 hours, to determine the average decrease.

Therefore:

(14.7°C - (-6.8°C)) / 9 hours = 21.5°C / 9 hours = 2.39°C per hour

Rounding to the nearest whole number, we have:

2.39°C per hour ≈ 2.4°C per hour = 0.8°C per hour.

Answer:

28 somethin

Step-by-step explanation:

The solution of the differential equation is [tex]y = (48/t - 6t)^{-1/2}.[/tex]

A differential equation is a mathematical equation that describes the relationship between a function and its derivatives.

In this particular differential equation, the dependent variable is y and the independent variable is t. The equation states that the rate of change of y with respect to t is equal to

=> y²(6 + t).

To find the solution to this differential equation, we first need to separate the variables and integrate both sides.

This gives us an equation of the form

[tex]= > y = (C/t - 6t)^{-1/2}[/tex]

where C is an arbitrary constant.

To find the value of C, we use the initial condition y = 8 when t = 1. Plugging in these values, we find that

=> C = (8)² * 1 - 6 = 48.

So, the solution to the differential equation is

=> [tex]y = (48/t - 6t)^{-1/2}.[/tex]

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The maximum volume of the cylinder is 27147.355 cm² at the maximum point.

What is volume of cylinder?

The density of a cylinder is determined by its volume, which represents how much material may be immersed in it or carried inside of it. The formula r2h, where r is the radius of the circular base and h is the height of the cylinder, determines the volume of a cylinder. The substance could be a liquid amount or something else that can be evenly put into the cylinder.

The formula for the volume of the cylinder v = [tex]\pi r^2[/tex]h,

To find the maximum volume of the cylinder we apply the condition of maxima [tex]\frac{dv}{dr}[/tex]  = 0.

Let r cm be the radius and h cm be the height of the closed cylinder.

Then, Total surface area of the cylinder = [tex]2\pi r(r+h)[/tex]

                                                   5000      = [tex]2\pi r^{2} +2\pi rh[/tex]

                                                    h     =    [tex]\frac{5000-2\pi r^{2} }{2\pi rh}[/tex]............(1)

Volume of the cylinder v = [tex]\pi r^2h[/tex]

Substitute the value of h  in the above equation

                                      = [tex]\pi r^2[/tex] × [tex]\frac{5000-2\pi r^{2} }{2\pi rh}\\[/tex]

                                      = [tex]\frac{r}{2}[/tex] ×  [tex]5000-2\pi r^2[/tex]

                                   v = [tex]2500r-\pi x^{3}[/tex] ..............(2)

Now, for the maximum volume of the cylinder   dv/dr= 0

                                                      [tex]\frac{d(2500r-\pi x^{3})}{dr}[/tex]         =0

                                                            [tex]3\pi r^{2} =2500[/tex]

                                                               [tex]r^{2} =\frac{2500}{3\pi }[/tex]

                                                              r=[tex]\frac{50}{\sqrt{3\pi } }[/tex]

                                                           r= 27147.355

Hence, The maximum volume of the cylinder is 27147.355 at the maximum point r= [tex]\frac{50}{\sqrt{3\pi } }[/tex].

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The numeric values for the function y = 4x² are given as follows:

To find the numeric value of a function or of an expression, we replace each instance of the variable in the function or in the expression by the value at which we want to find the numeric value.

The function in this problem is given as follows:

y = 4x².

Hence, to obtain the numeric value at x = -3, we replace the lone instance of x by -3, hence:

y = 4(-3)² = 4 x 9 = 36.

The same procedure is applied to obtain the other numeric values.

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Adult ticket costs $3 and the student $1.

An equation is a  mathematical statement that is made up of two expressions connected by an equal sign.  In its simplest form in algebra, the definition of an equation is a mathematical statement that shows that two mathematical expressions are equal. For instance, 3x + 5 = 14 is an equation, in which 3x + 5 and 14 are two expressions separated by an 'equal' sign.

here, we have,

1) Gathering the data

1st day

5a +3s =18

2nd day:

7a +1s= 22

2) Let's set a system of Linear equations, given those two equations:

solving we get,

a=3

s=1

3) Hence, the adult ticket costs $ 3 and the student $1.

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The representation of D in the form D_x, D_y, where the x and y components are separated by a comma will be D[6.08,7.27]

Any vector oriented in two dimensions can be understood to have an impact in both directions. This implies that it may be divided into two halves. A component is a portion of a two-dimensional vector. The components of a vector assist to represent the vector's effect in a certain direction. The total impact of these two components is equivalent to the influence of the separate two-dimensional vectors. The two vector components can substitute the single two-dimensional vector.

Determine the x and y components for each vector A & B for vector A

Ax=sin (15) * 2=0.5176

Ay=cos (15) * 2=1.9318

for Vector B

Bx=cos (15) * 4=3.8637

By=sin (15)* 4=1.0352

The vector addition and scalar multiplication for x and y individually D=4.3 * A+B

Dx=4.3 *(sin (15) * 2)+cos (15) * 4

Dx=4.3 * 0.5176+3.8637

Dx=6.0893

Dy=4.3 *(cos (15) * 2)-sin (15) * 4

Dy=4.3 * 1.9318-1.0352

Dy=7.2715

D[6.08,7.27]

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The actual question may be:

Express D in the form D_x, D_y, where the x and y components are separated by a comma using two significant figures.