Question

TEOREMA DE TALES
urgente

Answer 1

Explicação passo-a-passo:

Pelo Teorema de Tales:

$\sf \dfrac{x}{x+2}=\dfrac{9}{12}$

$\sf 12x=9\cdot(x+2)$

$\sf 12x=9x+18$

$\sf 12x-9x=18$

$\sf 3x=18$

$\sf x=\dfrac{18}{3}$

$\sf \large\red{x=6}$

Answer 2

• Usando o Teorema de Tales:

(x + x + 2)/x = (9 + 12)/9

(2x + 2)/x = 21/9

(2x + 2)/x = 7/3

3(2x + 2) = 7x

6x + 6 = 7x

7x - 6x = 6

x = 6

Resposta: d) 6