SOLUTION: The length of a rectangular banner is 5 feet longer than its width. If the area is 66 square feet, find the dimensions.

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Question 665680: The length of a rectangular banner is 5 feet longer than its width. If the area is 66 square feet, find the dimensions.
Answer by ReadingBoosters(3246) About Me  (Show Source):
You can put this solution on YOUR website!
a = (l)(w) = 66
l = w + 5
...
Substitute l into the area equation
(w+5)(w) = 66
w^2 + 5w - 66 = 0
(w+11 )(w-6)
w = -11 (width cannot be negative)
highlight%28width+=+6%29+ft
l = 66/6 = highlight%28length=11%29ft
...
Check cartoon%28%0D%0A6+%2B+5%2C%0D%0A11%29
.....................
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