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21-02-2017
Mathematics

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Lisa is planning to build a rectangular deck that is 10 feet longer than it is wide. Find its width if its area is 375 square feet. Which equation models this problem?

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ManiB942 ManiB942

21-02-2017

If w = width, then length = w+10, then the area is given by

lw = A or
(w+10)(w) = A or
(w+10)(w) = 375 or
w² + 10w = 375

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