florencemarti871 florencemarti871

13-11-2017
Mathematics

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The area of a rectangle is 27 ft2 , and the length of the rectangle is 3 ft less than double the width. find the dimensions of the rectangle. length : ft width : ft

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jorel1380 jorel1380

13-11-2017

Let w be the width;and 2w-3 be the length. Then:
w(2w-3)=27
2w²-3w-27=0
(2w-9)(w+3)=0
w=9/2 or -3
The width is 9/2 ft, the length is 6
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