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Mathematics 9 Online
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

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

OpenStudy (anonymous):

srry tht not what i meant to type ...

OpenStudy (precal):

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