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Andrei [34K]
2 years ago
7

The width of a rectangle is 7 inches shorter than its length. The area is 78 square inches. What are the dimensions of the recta

ngle?
Mathematics
1 answer:
harina [27]2 years ago
6 0

Answer:

Step-by-step explanation:W = L - 7

WL = 78

(L-7)L = 78

L^2 - 7L - 78 = 0

Factorize: (L-13)(L+6) = 0

L = 13 or -6

A length cannot be negative, so the length must be 13 miles.

The width is 13-7 = 6 miles.

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