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12-07-2017
Mathematics

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The area of a rectangle is 63 ft2 , and the length of the rectangle is 5 ft more than twice the width. find the dimensions of the rectangle.

Respuesta :

15-07-2017

w(2w+5) = 63 where w is the width and 2w+5 is 5 more than twice the width w.
2w^2 + 5w = 63
2w^2 + 5w - 63 = 0
Factoring
(w+7)(2w-9) = 0
2w-9 = 0
w=9/2 = 4.5 ft
Length is therefore 14 ft

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