Respuesta :

since M is a midpoint between p and Q

Then;

PM = MQ

7x + 8 = 5x + 20

collect like term;

7x - 5x = 20 -8

2x = 12

divide both-side 0f the equation by 2

x= 6

MQ = 5x + 20

substitute x=6 into the above

MQ = 5(6) + 20= 30+20 = 50