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

Respuesta :

mona1996
mona1996 mona1996
  • 09-05-2017
I believe its B hope this helps 
Answer Link
trampoline
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
Answer Link

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