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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04-09-2017
Mathematics

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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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texaschic101 texaschic101 · Answer 1 · 2017-09-04T19:44:43+02:00

texaschic101 texaschic101

04-09-2017

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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linekemalloy linekemalloy · Answer 2 · 2017-09-04T19:47:36+02:00

linekemalloy linekemalloy

04-09-2017

length is 17 inches...

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