Question

10) Nas figuras, a // b // c, calcule o valor de x.​

Answer 1

A)

$\frac{2}{4} = \frac{3}{x}$

2x=3.4

2x=12

x=12/2

x=6

B)

$\frac{4}{12} = \frac{x}{21}$

12x=21.4

12x=84

x=84/12

x=7

C)

$\frac{x}{14} = \frac{9}{12}$

12x=14.9

12x=126

x=126/12

x=10,5

D)

$\frac{x}{9} = \frac{8}{12}$

12x=9.8

12x=72

x=72/12

x=6