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OpenStudy (anonymous):
NEED HELPPP!!! A rectangle has a length of x. Its width is 3 feet longer than twice the length. Find the dimensions if its area is 80 ft2. Round to the nearest tenth of a foot
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OpenStudy (anonymous):
w=2x+3 wx=80 use substitution to solve the variables
OpenStudy (anonymous):
i did...but it isn't working
OpenStudy (anonymous):
plug "2x+3" in for w in the second eqn.
OpenStudy (anonymous):
(2x+3)x=80
OpenStudy (anonymous):
how is x 16?..that doesn't equal to 80 when you plug 16 into x
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OpenStudy (anonymous):
srry tht not what i meant to type ...
OpenStudy (precal):
|dw:1331169747820:dw|
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