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August 31, 2015

Homework Help: College Algebra

Posted by Brooklyn on Tuesday, March 15, 2011 at 1:05pm.

You have 100yds. of fencing to enclose a rectangular area. Find the dimensions which maximize the area. What is the maximum area?

I know that A=L times W.
I know that 100 = 2L+2w
Subtract 2L from both sides:
100-2L=2W
Divide by two: 50-L=W
Substitute in original equation:
A=LW A=L(50-L)
A= 50L - L squared Now I am stuck.

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