deondrebutler1 deondrebutler1
  • 23-11-2017
  • Mathematics
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The area of a rectangular wall of a barn is 208 square feet. It’s length is 10 feet longer than twice it’s width. Find the length and width of the wall of the barn

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jorel1380
jorel1380 jorel1380
  • 23-11-2017
Let w be the width of the barn; and 2w+10 be its' length. Then:
w(2w+10)=208
2w²+10w-208=0
w²+5w-104=0
(w+13)(w-8)=0
w=8
2w+10=26
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