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16-03-2017
Mathematics

contestada

The length of a rectangular air filter is 33 inches less than twice the width. find the length and width of the filter if the area is 464464 square inches.

Respuesta :

21-03-2017

L=2W-33, A=LW, and A=464464 so

464464=(2W-33)W

464464=2W^2-33W

2W^2-33W-464464=0

W=(33(+-)(3716801)^(1/2))/4

W=490.23in (approx)

L=2W-33=947.45in

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