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10-05-2016
Mathematics

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b1 of a trapezoid in which A 48x+68 in, h 8 in, and b2 9x+12 in

b1 of a trapezoid in which A 48x68 in h 8 in and b2 9x12 in class=

Respuesta :

10-05-2016

A=h(b1+b2)/2, so 48x+68=8(9x+12+b1)/2. Then, dividing by 4, 12x+17=9x+12+b1. Subtracting 9x+12, we have that b1=3x+5.

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