Question

PRECISO DOS CALCULOS
3. Sabendo que MN paralelo BC, calcule as medidas X e Y indicadas na figura.

Answer 1

.
$\frac{x}{9} = \frac{9}{15} = \frac{6}{y} \\ \\ \frac{x}{9} = \frac{9}{15} ~~~~~~~~~~ ~~~~~~~~\frac{6}{y} = \frac{9}{15} \\ \\ 15x=81~~~~~~~~~~~~~~~~9y=90\\ \\ x=81\div15 ~~~~~~~~~~~~y=90\div9\\ \\ x=5,4~~~~~~~~~~~~~~~~y=10$

Answer 2

x/(x+9)=9/24
x/(x+9)=3/8
8x=3(x+9)
8x=3x+27
8x-3x=27
5x=27
x=27/5
x=5,4

9/24=6/y
3/8=6/y
3y=48
y=48/3
y=16


x=5,4   e    y=16