mathiskindacool2017 mathiskindacool2017

09-05-2017
Mathematics

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14) A rectangle with an area of 120 in2 has a length 8 inches longer than two times its width. What is the width of the rectangle?
A) 3 inches
B) 6 inches
C) 9 inches
D) 12 inches

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mona1996 mona1996

09-05-2017

I believe its B hope this helps

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trampoline trampoline

09-05-2017

A = l * w
l = 2w + 8

120 = w(2w + 8)
0 = 2w^2 + 8w - 120

Then you just use the quadratic formula where a=2, b=8, and c=-120.

You get w=6

B) 6 inches

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