Question

Determine o valor de x no trapézio abaixo, sendo MN a base média:

Answer 1

$6x-4 = \frac{(2x+2 + 5x}{2} => 6x - 4 = 12x -8 = 7x+2 => \\ \\ 12x -7x = 2+8 => 5x = 10 => x = \frac{10}{5} \\ \\ x =2$


AB = 2 * 2 + 2  = 6
MN = 6*2-4      =  8 
CD = 5 * 2       =10

A B = 6
MN = 8
CD = 10