Answer:
Length = 18 in
Width = 15 in
Step-by-step explanation:
We have that the area of a rectangle is:
A = L * W
but L = 1.2 * W
A = 1.2 * (W ^ 2)
1.2 * (W ^ 2) = 270
(W ^ 2) = 270 / 1.2
W ^ 2 = 225
Therefore, W is equal to:
W = 225 ^ (1/2)
W = +/- 15, but only +15 makes sense
W = 15
Now for L:
L = 1.2 * 15
L = 18
A = 15 * 18 = 270 in ^ 2
You need to solve for x or y in one equation and and substitute it into the other equation in place of the variable that corresponds to it.
Answer:
D) 2
Step-by-step explanation:
5x + 7
8x -3 +2x
5x + 7
10x - 3
7 + 3
10x - 5x
10
5x
2
x
x
2