3 years ago

the length of a rectangle is five less than twice it's width.if the perimeter of the rectangle is 56 inches,find its dimensions.

Mathematics

2 answers:

yawa3891 [41]3 years ago

8 0

length is 17 inches...

Kaylis [27]3 years ago

7 0

P = 2(L + W)
P = 56
L = 2W - 5

56 = 2(2W - 5 + W)
56 = 2(3W - 5)
56 = 6W - 10
56 + 10 = 6W
66 = 6W
66/6 = W
11 = W <=== width is 11 inches

L = 2W - 5
L = 2(11) - 5
L = 22 - 5
L = 17 <=== length is 17 inches

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