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Lelu [443]
3 years ago
11

The length of a rectangle is four feet less than twice width. The area of the rectangle is 70 square feet. Find the dimensions o

f the rectangle
Mathematics
1 answer:
san4es73 [151]3 years ago
7 0

70=A=Lw

L=2w-4

70=(2w-4)w

70=2w²-4w

70=2(w²-2w)

35=w²-2w

0=w²-2w-35

0=(w+7)(w-5)

-7=w or w=5

Measurements aren't negative

w=5 ft

L=2(5)-4

L=6 ft

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