Question

1. Nas figuras, a Il bllc, calcule o valor de x.

Answer 1

Usando teorema de Tales

c)

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

Meios Pelos Extremos

$12x = 126 \\ \\ x = \frac{126}{12} \\ \\ x = \frac{21}{2} \\ \\ x = 10.5$

d)

$\frac{x}{12} = \frac{9}{8} \\ \\ 8x = 108 \\ \\ x = \frac{108}{8} \\ \\ x = \frac{27}{2} \\ \\ x = 13.5$