Question

Aplicado o teorema de tales,determine o valor de X:​

Answer 1

Resposta:

a) 10,5

b) 2

Explicação passo-a-passo:

a)

$\dfrac{x}{14}=\dfrac{9}{12}\\\\12x=14\cdot 9\\\\x=\dfrac{14\cdot 9}{12}$

Simplificando

$x=\dfrac{7\cdot 3}{2}\\\\x=\dfrac{21}{2}=10,5$

b)

$\dfrac{9}{x}=\dfrac{18}{4}\\\\18x=9\cdot 4\\\\x=\dfrac{36}{18}\\\\x=2$