SOLUTION: The length of a rectangle is four feet more than twice its width. If the area of the rectangle is 160 square feet, its length is _____ feet?

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Question 950339: The length of a rectangle is four feet more than twice its width. If the area of the rectangle is 160 square feet, its length is _____ feet?
Found 2 solutions by Fombitz, MathTherapy:
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
For a rectangle,
A=L%2AW=160
%28W%2B4%29W=160
W%5E2%2B4W=160
W%5E2%2B4W%2B4=160%2B4
%28W%2B2%29%5E2=164
W%2B2=0+%2B-+sqrt%28164%29
W=-2+%2B-+2sqrt%2841%29
Since we're only interested in the positive solution,
W=-2%2B2sqrt%2841%29
So then,
L=-2%2B2sqrt%2841%29%2B4
L=2%2B2sqrt%2841%29

Answer by MathTherapy(10549) About Me  (Show Source):
You can put this solution on YOUR website!

The length of a rectangle is four feet more than twice its width. If the area of the rectangle is 160 square feet, its length is _____ feet?
Length: highlight_green%2820%29 ft