Step-by-step explanation:
Time = 5/6 - 2/6 = 3/ 6 = 1/2
Find the area of the triangle ABC A(-6,2) B(3,2) c(-2,6) D (-2,2)
Answer:
18 square units.
Step-by-step explanation:
Area of the triangle = ½*AB*CD
First of all, find the length of AB and CD using the distance formula, [tex] d = \sqrt{(x_2 - x_1)^2 + (y_2 - y_1)^2} [/tex]
[tex] AB = \sqrt{(x_2 - x_1)^2 + (y_2 - y_1)^2} [/tex]
A(-6, 2) => (x1, y1)
B(3, 2) => (x2, y2)
[tex] AB = \sqrt{(3 -(-6))^2 + (2 - 2)^2} [/tex]
[tex] AB = \sqrt{(9)^2 + (0)^2} = \sqrt{81} = 9 [/tex]
[tex] CD = \sqrt{(x_2 - x_1)^2 + (y_2 - y_1)^2} [/tex]
C(-2, 6) => (x1, y1)
D(-2, 2) => (x2, y2)
[tex] CD = \sqrt{(-2 -(-2))^2 + (2 - 6)^2} [/tex]
[tex] CD = \sqrt{(0)^2 + (-4)^2} = \sqrt{16} = 4 [/tex]
AB = 9
CD = 4
Area of rectangle = ½*AB*CD = ½*9*4 = 9*2 = 18 square units.
Answer:
18
Step-by-step explanation:
Round 548.8 to the nearest thousand.
Answer:
The answer is 1,000
An expirement consists of rolling two fair number cubes. What is the probability that the sum of the two numbers will be 4? Express your answer aa a fraction in simpleat form.
Answer:
[tex]\dfrac{1}{12}[/tex]
Step-by-step explanation:
Given:
Two fair number cubes i.e. two dice consisting the numbers 1, 2, 3, 4, 5, 6 on their faces and have equal probability of each number.
The dice are rolled.
To find:
Probability of getting the sum of two numbers as 4.
Solution:
First of all, let us have a look at the total possibilities when two dice are rolled:
([1][1], [1][2], [1][3], [1][4], [1][5], [1][6],
[2][1], [2][2], [2][3], [2][4], [2][5], [2][6],
[3][1], [3][2], [3][3], [3][4], [3][5], [3][6],
[4][1], [4][2], [4][3], [4][4], [4][5], [4][6],
[5][1], [5][2], [5][3], [5][4], [5][5], [5][6],
[6][1], [6][2], [6][3], [6][4], [6][5], [6][6])
These are total 36 possible outcomes.
For getting a sum as 4:
Possible number of favorable cases are 3 (as highlighted in BOLD in above)
Formula for probability of an event E can be observed as:
[tex]P(E) = \dfrac{\text{Number of favorable cases}}{\text {Total number of cases}}[/tex]
Required probability is:
[tex]\dfrac{3}{36} = \bold{\dfrac{1}{12}}[/tex]
If 5x + 4 = 8x + 10, then x = ?
Answer:
x = - 2
Step-by-step explanation:
[tex]5x + 4 = 8x + 10 \\ 5x - 8x = 10 - 4 \\ - 3x = 6 \\ x = \frac{6}{ - 3} \\ x = - 2[/tex]
The solution of the equation 8x + 10 = 5x + 4 will be negative 2.
What is the solution to the equation?The distribution of weights to the variables involved that establishes the equilibrium in the calculation is referred to as a result.
A relationship between two or more parameters that, when shown on a graph, produces a linear model. The degree of the variable will be one.
The linear equation is given below.
8x + 10 = 5x + 4
Simplify the equation, then we have
8x - 5x = 4 - 10
3x = - 6
x = - 6 / 3
x = - 2
The solution of the equation 8x + 10 = 5x + 4 will be negative 2.
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how do i simplify this problem?
12r+5s-7T+9s-4r
Answer: To simplify this problem you combine the like terms in the equation (numbers with the same variables.)
Demo: 12r + -4r = 8r
Answer:
8r + 14s - 7T
Step-by-step explanation:
Hello!
We have to make sure the terms are like terms before we add them.
Like terms are terms with the same variable so we can add r's with r's, t's with t's, etc.
There are two r's and two s's so we can simplify those
12r - 4r = 8r
5s + 9s = 14s
Now put these all together with the T in the original equation to get the answer
8r + 14s - 7T
Hope this helps!
please help me!!!!!
Answer: see proof below
Step-by-step explanation:
Use the Sum & Difference Identity: tan (A - B) = (tanA - tanB)/(1 + tanA tanB)
Use the Half-Angle Identity: tan (A/2) = (1 - cosA)/(sinA)
Use the Unit Circle to evaluate tan (π/4) = 1
Use Pythagorean Identity: cos²A + sin²A = 1
Proof LHS → RHS
[tex]\text{Given:}\qquad \qquad \qquad\dfrac{2\tan\bigg(\dfrac{\pi}{4}-\dfrac{A}{2}\bigg)}{1+\tan^2\bigg(\dfrac{\pi}{4}-\dfrac{A}{2}\bigg)}[/tex]
[tex]\text{Difference Identity:}\qquad \dfrac{2 \bigg( \frac{\tan\frac{\pi}{4}-\tan\frac{A}{2}}{1+\tan\frac{\pi}{4}\cdot \tan\frac{A}{2}}\bigg)}{1+ \bigg( \frac{\tan\frac{\pi}{4}-\tan\frac{A}{2}}{1+\tan\frac{\pi}{4}\cdot \tan\frac{A}{2}}\bigg)^2}[/tex]
[tex]\text{Substitute:}\qquad \qquad \dfrac{2 \bigg( \frac{1-\tan\frac{A}{2}}{1+\tan\frac{A}{2}}\bigg)}{1+ \bigg( \frac{1-\tan\frac{A}{2}}{1+\tan\frac{A}{2}}\bigg)^2}[/tex]
[tex]\text{Simplify:}\qquad \qquad \qquad \dfrac{1-\tan^2\frac{A}{2}}{1+\tan^2\frac{A}{2}}[/tex]
[tex]\text{Half-Angle Identity:}\qquad \quad \dfrac{1-(\frac{1-\cos A}{\sin A})^2}{1+(\frac{1-\cos A}{\sin A})^2}[/tex]
[tex]\text{Simplify:}\qquad \qquad \dfrac{\sin^2 A-1+2\cos A-\cos^2 A}{\sin^2 A+1-2\cos A+\cos^2 A}[/tex]
[tex]\text{Pythagorean Identity:}\qquad \qquad \dfrac{1-\cos^2 A-1+2\cos A}{2-2\cos A}[/tex]
[tex]\text{Simplify:}\qquad \qquad \qquad \dfrac{2\cos A-2\cos^2 A}{2(1-\cos A)}\\\\.\qquad \qquad \qquad \qquad =\dfrac{2\cos A(1-\cos A)}{2(1-\cos A)}[/tex]
= cos A
LHS = RHS: cos A = cos A [tex]\checkmark[/tex]
In 2003, the population of an African country was about 19.5 million people, which is 2 million more than 5 times the population in 1950. Enter and solve an equation to find the approximate population p (in millions) in 1950.
Answer:
[tex]P = 3.5\ million[/tex]
Step-by-step explanation:
Given
Represent 1950 Population with P and 2003 Population with Q
[tex]Q = 19.5\ million[/tex]
Required
Determine the value of P
From the question; we have that
[tex]Q = 2\ million + 5 * P[/tex]
Substitute 19.5 million for Q
[tex]19.5\ million = 2\ million + 5 * P[/tex]
Subtract 2 million from both sides
[tex]19.5\ million - 2\ million= 2\ million - 2\ million + 5 * P[/tex]
[tex]19.5\ million - 2\ million= 5 * P[/tex]
[tex]17.5\ million = 5 * P[/tex]
Divide both sides by 5
[tex]\frac{17.5\ million}{5} = \frac{5 * P}{5}[/tex]
[tex]\frac{17.5\ million}{5} = P[/tex]
[tex]3.5\ million = P[/tex]
[tex]P = 3.5\ million[/tex]
Hence, the 1950 population is 3.5 million
please help me out! and please add step by step so I’ll get it lol
Answer:
57
Step-by-step explanation:
-7+2*36-8
-7+72-8
65-8
57
Evaluate each expression if a =2, b = -3 and c = -1 and d =4. 5bc
Answer:
15
Step-by-step explanation:
5bc = 5(-3)(-1) = -15(-1) = 15
Two lines extend from point S to create a right angle. The vertical line extends from point S through point R. The horizontal line extends right from point S through point T. A third line extends right and up from point S through point U. Which is the endpoint of a ray? point R point S point T point U
Answer:
Option R
Step-by-step explanation:
The point S is the end point of ray.
What is line?
A line has length but no width, making it a one-dimensional figure. A line is made up of a collection of points that can be stretched indefinitely in opposing directions. Two points in a two-dimensional plane determine it.
According to the given information,
A ray's endpoint is a single point that denotes the conclusion of a line segment. In this instance, only one of the three lines that extend from point S contains a ray's terminus.
We must comprehend a ray's qualities in order to establish which location is the endpoint of a ray.
A ray originates at a single place and travels in one direction indefinitely. The beginning of the line segment is the endpoint of a ray.
We can see from the provided lines that the vertical line runs from point S via point R. Since it doesn't go on forever in one direction, this is not a ray example.
Similar to the vertical line,
The horizontal line also extends from point S through point T,
But it does not go on forever.
The third line is a ray because it is infinitely long in one direction and extends right and up from point S via point U.
Therefore, point S, the beginning of the line, is the endpoint of this ray.
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two-thirds of the 27 students in the class had perfect attendance for the first half of the year. How many students had a perfect attendance record? HELP
Answer:
18
Step-by-step explanation:
1/3 of 27 is 9 so 2/3 is 18
13x-7+7x-13=180 whats the answer?
Answer:
x=10
Step-by-step explanation:
13x-7+7x-13=180
Combine like terms
20x-20 = 180
Add 20 to each side
20x -20+20 = 180+20
20x=200
Divide by 20
20x/20 = 200/20
x = 10
Answer:x=10
Step-by-step explanation:
1.add the number
2.add the same term to bothe sides of the equation
3.simplify
4.divide bothe side of the equation by the same term
5.simplify
Simplify: (x^-3/y) (x/y)^-1
Answer:
x(5)/(6)y(1)/(2)
Step-by-step explanation:
Hoped I helped
leave a like or rate.
Help please!!! Tyyyyyy
Answer:
D
Step-by-step explanation:
So we have the equation:
[tex]ax+by+c=0[/tex]
First, let's convert this to slope-intercept form.
Subtract ax from both sides:
[tex]by+c=-ax[/tex]
Subtract c from both sides:
[tex]by=-ax-c[/tex]
Divide everything by b:
[tex]y=-\frac{a}{b}x-\frac{c}{b}[/tex]
We are told that a>0, b<0, and c>0.
In other words, a is positive, b is negative, and c is positive.
The slope of the equation is -a/b.
Since a is positive and b is negative, we will have:
-(+)/(-).
The negatives will cancel out. Therefore, our slope will be positive.
Since our slope is positive, our line must be upwards sloping. Eliminate answers A and C.
Also, our y-intercept is:
-c/b.
c is positive and b is negative. Thus, similarly:
-(+)/(-).
Again, the negatives cancel. This means that the y-intercept must be positive.
Out of B and D, the graph that has a positive y-intercept is D.
D is our answer :)
Find the standard form of the equation of the parabola with a focus at (0, 4) and a directrix at y = -4. Answer choices: y = 1/16x2 y2 = 16x y2 = 4x y = 1/4x2
Answer:
a) The standard form of the equation
[tex]y=\frac{16}{x^{2} }[/tex]
Step-by-step explanation:
Explanation:-
A parabola is the set of all points in a plane that are equidistant from a fixed line and a fixed point (not in a line) in the plane
• The Fixed line is called the directrix of the parabola.
• The Fixed point is called the focus of the parabola.
• A line through the focus and perpendicular to the directrix is called the axis of the parabola.
• The point of intersection of parabola with the axis is called the vertex of the parabola.
Given Focus of the parabola S(0,a)= (0,4)
Given Focus is lies on y-axis and the directrix is parallel to x-axis
Given directrix of the parabola y = -4
Directrix y = -a
Standard form of the parabola
x² = 4ay
x² = 4(4)y
x² = 16y
[tex]y=\frac{16}{x^{2} }[/tex]
how do I solve this .... question in the image.
thank you
Answer:
Below
Step-by-step explanation:
● x-20 = y+20 (1)
● 2(y-22) = x+22 (2)
This is a system of simulataneous equations
Let's simplify the expressions first
● x -20 = y + 20 (1)
Add 20 to both sides
● x -20 + 20 = y+20 +20
● x = y + 40 (1)
● 2(y-22) = x+22 (2)
● 2y - 44 = x +22
Substrat 22 from both sides
● 2y-44-22 = x+22-22
● 2y -66 = x (2)
This is the new system:
● x = y+40 (1)
● x = 2y-66 (2)
Substract (2) from (1)
● x-x = y+40-(2y-66)
● y+40-2y+66 = 0
● -y +106 = 0
● y = 106
Replace y with 106 in (1)
● x = y +40
● x = 106+40
● x = 146
So the solutions are (146,106)
If 2^x=5, what is 2^3x-4
Answer:
121
Step-by-step explanation:
2^3x - 4 = (2^x )^3 - 4 = 125 - 4 = 121
[tex]\implies\tt 2^x = 5 [/tex]
[tex]\implies\tt \Big( 2^x \Big)^3 - 4 [/tex]
[tex]\implies\tt 125 - 4 [/tex]
[tex]\huge\implies\tt 121 [/tex]
Can someone please help solve this and show me the formula of how to do it?
Answer:
f=2.93cm
Step-by-step explanation:
SOH CAH TOA [the length you are finding is adjacent to the angle and opposite to right angle is the hypotenuse, therefore use cosine]
cos(43°)=f/4
[times 4x on both sides it cancels on the left]
4cos(43°)=f
2.93=f
James washes cars to earn money. He charges $7.00 per compact car, $10.00 per mid -sized car, and $15.00 per SUV. On Saturday, he washed 3 compact cars, 4 mid-sized cars, and 2 SUVs. How much money did he earn?
Answer:
$91.00
Step-by-step explanation:
From the above question, we obtained the following information.
James charges:
1 compact car = $7.00
1 mid sized car = $10.00
1 SUV = $15.00
On Saturday, he washed:
a) 3 compact cars
1 compact car = $7.00
3 compact cars = ?
= $7.00 × 3
= $21.00
b) 4 mid-sized cars
1 mid- sized car = $10.00
4 mid-sized cars = ?
= $10.00 × 4
= $40.00
c) 2 SUVs.
1 SUV = $15.00
2 SUVs = ?
= $15.00 × 2
= $30.00
How much money did he earn?
$21.00 + $40.00 + $30.00
= $91.00
Therefore, James earned $91.00
A ______ equation is an equation in which each term is either a constant or the product of a constant and a single variable.
Answer:
linear
Step-by-step explanation:
hey there,
< Linear equations are constant. They are not like parabolas so they are not curved but instead are straight, which allows them to be constant. >
Hope this helped! Ask me any more questions if you still don't understand!
Answer: The answer is a Linear Function
Step-by-step explanation:
the lcd for fractions 1/3 3/4 and 8/9 is
Answer:
the answer is /36
Step-by-step explanation:
3 goes into 36
4 goes into 36
9 goes into 36
At a store, Eva bought two shirts and five hats for $154.00. Nicole bought three same shirts and four same hats for $168.00. what is the price of each shirt
Answer:
shirts are $32 each and hats are $18 each
Step-by-step explanation:
x = shirts
y = hats
2x + 5y = 154
3x + 4y = 168
use either substitution or elimination
x = $32
y = $18
The price of each shirt is $32 while the price of each hat is $18.
let
the price of each shirt = x
the price of each hat = y
Eva's purchase will be
2x + 5y = 154Nicole's purchase will be
3x + 4y = 168Combine the equation to find the price of each shirt and hat.
2x + 5y = 154
3x + 4y = 168
2x = 154 - 5y
x = 77 - 5 / 2 y
3x + 4y = 168
3(77 - 5 / 2 y) + 4y = 168
231 - 15 / 2 y + 4y = 168
168 - 231 = - 7 /2 y
- 63 = - 7 / 2 y
cross multiply
-126 = -7y
y = 18
2x + 5(18) = 154
2x + 90 = 154
2x = 154 - 90
2x = 64
x = 64 / 2
x = 32
Price of each shirt = $32
price of each hat = $18
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The area of a rectangle is (x3 – 5x2 + 3x – 15), and the width of the rectangle is (x2 + 3). If area = length × width, what is the length of the rectangle? x + 5 x – 15 x + 15 x – 5
Answer:
D
Step-by-step explanation:
The area of a rectangle is given by the formula:
[tex]A=\ell w[/tex]
So, we are given that the area is:
[tex]x^3-5x^2+3x-15[/tex]
And the width is:
[tex]x^2+3[/tex]
And we want to find the length. To do so, first substitute the expressions into the equation:
[tex]x^3-5x^2+3x-15=(x^2+3)\ell[/tex]
Thus, to find the length, divide by (x²+3):
[tex]\displaystyle \ell = \frac{x^3-5x^2+3x-15}{x^2+3}[/tex]
We can factor the numerator:
[tex]x^3-5x^2+3x-15[/tex]
From the first two terms, factor out a x².
From the third and fourth terms, factor out a 3:
[tex]=x^2(x-5)+3(x-5)[/tex]
Combine:
[tex]=(x^2+3)(x-5)[/tex]
Putting this back:
[tex]\displaystyle \ell = \frac{(x^2+3)(x-5)}{x^2+3}[/tex]
Cancel:
[tex]\ell =x-5[/tex]
Hence, our answer is D.
Answer:
D on Edge 2021 ;))
Step-by-step explanation:
The length of a side of a square field is 48m.Find the cost of ploughing the field at the rate of rs 25/m and cost of fencing the field at the rate of rs 18/m
Answer: rs 4800, rs 3456
Step-by-step explanation:j
given data:
length of a sid = 48m
cost of ploughing the field = rs 25/m
cost of fencing the field = rs 18/m
solution:
we know a square has four equal sides. so total length of the field is
= m ( 48 + 48 +48 + 48 )
= 192m
cost of ploughing the field
= 192m * rs 25
= rs 4800
cos of fencing the field
= 192m * rs 18
= rs 3456
A plant measures 6cm two weeks into an experiment and then measures 12cm four weeks after that. Write the equation of the line describe this situation if x=weeks and y=centimeters
Answer:
y = 3x
Step-by-step explanation:
Use rise over run (y2 - y1) / (x2 - x1) to find the slope
(12 - 6) / (4 - 2)
6/2
= 3
The plant will be 0 cm at 0 weeks, since 3(0) = 0
So, the equation will be y = 3x
Write an equation in point-slope form of the line that passes through the point (-6, 6) and has a slope of m=3/2
Answer:
Hello!!!!
The answer is y-6=3/2(x+6)
Step-by-step explanation:
point slope form is y-y1=m(x-x1)
-6 is x1 and 6 is y1
m=3/2
then plug in these values
hope this helps!!!!
Answer:
y-6=3/2(x--6)
Step-by-step explanation:
I am the best at the maths thing
The number of points scored by a basketball player in the first eight games of a season are shown below. 15, 35, 18, 30, 25, 21, 32, 16 What would happen to the data distribution if she scored 24, 22, 27, and 28 points in her next four games?
Answer:
im not sure how the data should be interpreted but here is the distribution. It goes up by .416
Step-by-step explanation:
the average of the first 8 games is 24
the average of the 12 games is 24.416
The mean of the data of the given basketball player will increase if she scored 24, 22, 27, and 28 points in her next four games.
What is Mean?A mean is an arithmetic average of a set of observations. it is given by the formula,
Mean = (Sum of observations)/Number of observations
Given that the number of points scored by a basketball player in the first eight games is 15, 35, 18, 30, 25, 21, 32, and 16. Therefore, the mean of the first 8 games is,
Mean = (15 + 35 + 18 +30 + 25 + 21 + 32 + 16)/8
= 176/8
= 22
Now, the player scored 24, 22, 27, and 28 points in her next four games. Therefore, the mean will be,
New Mean = (15 + 35 + 18 +30 + 25 + 21 + 32 + 16 + 24 + 22 + 27 + 28)/12
= 277 / 12
= 23.0833
Hence, the mean of the data of the given basketball player will increase if she scored 24, 22, 27, and 28 points in her next four games.
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please help me will mark as brainlist
Answer:
17.3825
Step-by-step explanation:
First I figured out the area of the square which is 18×18=324
Then I found out the are of the circle which is 254.47, so 324 - 254.47 = 69.53
Then there are 4 times the shaded are so divided by 4, so 69.53 ÷ 4 = 17.3825
PLEASE GIVE BRAINLIEST!
Answer:
shaded area = 17.38 cm²
Step-by-step explanation:
given:
diameter of circle = 18 cm and = side of square
π = 3.142
shaded area = ( Area of square - Area of circle ) x 1 / 4
Area of square = s² = 18² = 324 ²cm
Area of circle = π d² / 4
= 3.142 (18²) / 4
= 254.5 cm²
therefore, shaded area = ( 324 cm² - 254.5 cm² ) * 1/4
= 17.38 cm²
6.14 - (9 + 802 =
!!!
At a local discount theatre, tickets to the film The
Early Bird Gets the Sleepiest cost only $2.50 for
adults and $1 for children. If 19 people attended
the last showing and the theatre sold $40 worth of
tickets:
a.) How many adults attended the showing?
b.) How many children attended the showing?
Answer:
14 adults and 5 children
Step-by-step explanation:
Set up a system of equations, where a is the number of adults and c is the number of children:
2.5a + c = 40
a + c = 19
Multiply the bottom equation by -1 to solve by elimination:
2.5a + c = 40
-a - c = -19
1.5a = 21
a = 14
Now, plug in 14 as a to find the number of children:
a + c = 19
14 + c = 19
c = 5
So, 14 adults and 5 children attended