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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.
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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.

User Ricardo Alves
by
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2 Answers

7 votes
 length is 17 inches...
User Andrei Krotkov
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8.3k points
2 votes
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
User Nitin Karande
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7.1k points
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