1. The length of a rectangle is 6 inches more than its width. The area of the
rectangle is 91 square inches. Find the dimensions of the rectangle.
times their su
rectangle is 91 square inches. Find the dimensions of the rectangle.
times their su
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Answer:
W = 7
L = 13
Explanation:
length (L) is 6 more than width (W)
L = 6 + W
area (A) is 91
A = 91
area of rectangle
A = L * W
91 = (6 + W) * W
91 = 6W + W^2
0 = W^2 + 6W - 91
(W + 13) (W - 7) = 0
roots are W = -13, W = 7
we only use positive root (no negative widths)
if W = 7, then L
L = 6 + W = 6 + 7 = 13
check area
A = L * W = 13 * 7 = 91