Answer:
832 square feet of paint is needed to covet pool walls
Step-by-step explanation:
<u><em>The correct question is</em></u>
A swimming pool is 40 ft long 12 ft <em><u>wide</u></em> and 8 feet deep how many square feet of paint is needed to cover the walls of the pool?
To find out the area of the walls, multiply the perimeter of the base by the deep of the walls
so
![A=2(L+W)D](https://tex.z-dn.net/?f=A%3D2%28L%2BW%29D)
we have
![L=40\ ft\\W=12\ ft\\D=8\ ft](https://tex.z-dn.net/?f=L%3D40%5C%20ft%5C%5CW%3D12%5C%20ft%5C%5CD%3D8%5C%20ft)
substitute
![A=2(40+12)8](https://tex.z-dn.net/?f=A%3D2%2840%2B12%298)
![A=832\ ft^2](https://tex.z-dn.net/?f=A%3D832%5C%20ft%5E2)
therefore
832 square feet of paint is needed to covet pool walls
Answer:
B. The equation of the linear function is y = 3x + 2
D. The rate of change of the linear function is 3.
Step-by-step explanation:
First find the slope by choosing two ordered pairs and using the slope formula:
![\textsf{let}\:(x_1,y_1)=(2,8)](https://tex.z-dn.net/?f=%5Ctextsf%7Blet%7D%5C%3A%28x_1%2Cy_1%29%3D%282%2C8%29)
![\textsf{let}\:(x_2,y_2)=(3,11)](https://tex.z-dn.net/?f=%5Ctextsf%7Blet%7D%5C%3A%28x_2%2Cy_2%29%3D%283%2C11%29)
![\textsf{slope}\:(m)=\dfrac{y_2-y_1}{x_2-x_1}=\dfrac{11-8}{3-2}=3](https://tex.z-dn.net/?f=%5Ctextsf%7Bslope%7D%5C%3A%28m%29%3D%5Cdfrac%7By_2-y_1%7D%7Bx_2-x_1%7D%3D%5Cdfrac%7B11-8%7D%7B3-2%7D%3D3)
Now use the Point-slope form of linear equation with the found slope and one of the points to create the equation of the linear function:
![y-y_1=m(x-x_1)](https://tex.z-dn.net/?f=y-y_1%3Dm%28x-x_1%29)
![\implies y-8=3(x-2)](https://tex.z-dn.net/?f=%5Cimplies%20y-8%3D3%28x-2%29)
![\implies y=3x + 2](https://tex.z-dn.net/?f=%5Cimplies%20y%3D3x%20%2B%202)
The rate of change of a linear function is its <u>slope</u>.
Therefore,
B. The equation of the linear function is y = 3x + 2
D. The rate of change of the linear function is 3.
1.) x=12/k.
2.) x=k/9+2c/9.
Hope that helps!
Answer:
The equations whose solutions are -1/2 are:
1. 4x + 1 = 6x + 2
2. 3x + 7 = 5x + 8
Step-by-step explanation:
Using the digits 0 to 9 at most one time each, the equations whose solutions are -1/2 are:
1. 4x + 1 = 6x + 2
-2x = 1
x = -1/2
2. 3x + 7 = 5x + 8
-2x = 1
x = -1/2
Answer: sorry i have not learnd that yet
Step-by-step explanation: