So then whats the question? What do you need to find out?
I do believe the answer is A
Answer:
80%
Step-by-step explanation:
36/45 = 0.8
0.8 x 100= %80
The first thing we must do for this case, is to define a variable.
We have then:
w: width of the rectangle.
By definition, the area of the rectangle is the product of the length by the width.
We have then:
![A = (w) * (2w + 7) ](https://tex.z-dn.net/?f=A%20%3D%20%28w%29%20%2A%20%282w%20%2B%207%29%0A)
Substituting the value of the area we have:
![99 = (w) * (2w + 7) ](https://tex.z-dn.net/?f=99%20%3D%20%28w%29%20%2A%20%282w%20%2B%207%29%0A)
Rewriting the polynomial:
![2w ^ 2 + 7w - 99 = 0 ](https://tex.z-dn.net/?f=2w%20%5E%202%20%2B%207w%20-%2099%20%3D%200%0A)
When factoring we have:
![(w + 9) (2w-11) = 0 ](https://tex.z-dn.net/?f=%28w%20%2B%209%29%20%282w-11%29%20%3D%200%0A)
Taking the positive root we have:
![2w-11 = 0 2w = 11 w = 11/2 w = 5.5 yd](https://tex.z-dn.net/?f=2w-11%20%3D%200%0A%0A2w%20%3D%2011%0A%0Aw%20%3D%2011%2F2%0A%0Aw%20%3D%205.5%20yd)
Then, the length of the rectangle is:
Answer:
the dimensions of the rectangle are:
width = 5.5 yd
Long = 18 yd