Question

3- Nas figuras a//b//c , aplicando o teorema de Tales, calcule o valor de x.

Answer 1

Resposta:

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

2x= 3*4

x= 12/2

x= 6

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

12x = 4*21

x= 84/12

x= 7

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

12x= 9*14

x= 126/12

x= 10,5

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

12x= 9*8

x = 72/12

x= 6