Question

determine o valor de cada letra:

Answer 1

Olá, boa noite!

Utilizando o teorema de Tales, temos:

$\dfrac{x}{4}=\dfrac{9}{3}\\\\3x=9\cdot4\\3x=36\\x=\dfrac{36}{3}\\\boxed{x=12}\\\\\\\dfrac{9}{3}=\dfrac{6}{y+1}\\\\9(y+1)=3\cdot6\\9y+9=18\\9y=18-9\\9y=9\\y=\dfrac{9}{9}\\\boxed{y=1}$



Espero ter ajudado.
Bons estudos!