Question

Alguém sabeee ???????

Answer 1

a)
AB/AC=3/7
BC=16
AB=y
AC=16+y

AB/AC=3/7
y/(16+y)=3/7
7y=3(16+y)
7y=48+3y
7y-3y=48
4y=48
y=48/4
y=12

x=AC=16+y
x=16+12
x=28

b)
AP/PB=2/5
AP=12

12/PB=2/5
2 . PB=12 . 5
2PB=60
PB=60/2
PB=30

AB=AP+PB
AB=12+30
AB=42

Distancia de P ao ponto médio de AB
=(AB/2)-AP
=(42/2)-12
=21-12
=9