Question

Alguem ajuda pfv.qual o valor de x+y

Answer 1

Resposta:

Semelhança de triângulo

$\dfrac{12}{9}=\dfrac{18}{y}=\dfrac{x}{18}\\ \\ \\ \dfrac{12}{9}=\dfrac{18}{y}\\ \\ multiplica~~cruzado\\ \\ 12y=9.(18)\\ \\ 12y=162\\ \\ y=\dfrac{162}{12}\\ \\\boxed{ y=13,5}$

$\dfrac{12}{9}=\dfrac{x}{18}\\ \\ \\ 9x=12.(18)\\ \\ 9x=216\\ \\ x=\dfrac{216}{9}\\ \\\boxed{ x=24}$

$x+y=24+13,5\\ \\\boxed{ x+y=37,5}$