Answer:
The length is 15 and the width is 10
Step-by-step explanation:
Let l = length
w = l-5
We know the area is 150
A = l*w
150 = l ( l-5)
150 = l^2 - 5l
Subtract 150 from each side
0 = l^2 - 5l - 150
Factor
0= ( l+10) ( l-15)
Using the zero product property
l+10 =0 l-15=0
l = -10 l = 15
Since we cannot have a negative length
l = 15
w = 15-5 = 10
The length is 15 and the width is 10
Answer:
D
Step-by-step explanation:
it would be d because that's where the 3 is in the y axis
Answer:
Yul I can't help u I don't understand it
Answer:
![SA=703.36\ ft^2](https://tex.z-dn.net/?f=SA%3D703.36%5C%20ft%5E2)
Step-by-step explanation:
The picture of the question in the attached figure
we know that
The surface area of a cylinder is given by the formula
![SA=2(\pi r^{2})+2\pi rh](https://tex.z-dn.net/?f=SA%3D2%28%5Cpi%20r%5E%7B2%7D%29%2B2%5Cpi%20rh)
simplify
![SA=2\pi r(r+h)](https://tex.z-dn.net/?f=SA%3D2%5Cpi%20r%28r%2Bh%29)
we have
![h=9\ ft\\r=7\ ft](https://tex.z-dn.net/?f=h%3D9%5C%20ft%5C%5Cr%3D7%5C%20ft)
assume
![\pi=3.14](https://tex.z-dn.net/?f=%5Cpi%3D3.14)
substitute
![SA=2(3.14)(7)(7+9)=703.36\ ft^2](https://tex.z-dn.net/?f=SA%3D2%283.14%29%287%29%287%2B9%29%3D703.36%5C%20ft%5E2)