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14-10-2016
Mathematics

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If the area of a rectangle with width x can be represented with the expression A(x) = x(14 – x), what is the perimeter of the rectangle?

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14-10-2016

A=WL
P=2(L+W)

A=(x)(14-x)
W=x
L=14-x
P=2((14-x)+x)
P=2(14-x+x)
P=2(14+0)
P=2(14)
P=28

perimiter=24 units

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