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14-11-2017
Mathematics

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A rectangle is drawn so that the width is 5 feet shorter than the length. the area of the rectangle is 36 square feet. find the length of the rectangle.

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14-11-2017

w x L = 36

w = L- 5

L x ( L-5 ) = 36

L^2 -5L -36 =0

Use the quadratic formula

L= - b + radical b^2 - 4 (a)(c) divided 2.a

L= 5 + 13 / 2 = 18 /2 =9

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