Question

4. Sabendo que a // b // c, qual é o valor de
resolver isso ai manos (a) parar!!!​

Answer 1

Resposta: y - x = 13 - 5 = 8

Answer 2

Resposta:

Teorema de Tales

3)

$\dfrac{5}{8}=\dfrac{x}{4}\\ \\ \\ 8x=4.(5)\\ \\ 8x=20\\ \\ x=\dfrac{20}{8}=\dfrac{5}{2}\\ \\ \boxed{x=2,5}$

$\dfrac{5}{8}=\dfrac{2,75}{y}\\ \\ \\ 5y=8.(2,75)\\ \\ 5y=22\\ \\ y=\dfrac{22}{5}\\ \\\boxed{ y=4,4}$

---------------------------------------------

4)

$\dfrac{5}{13}=\dfrac{x}{y}\\ \\ \\ sendo~~x+y=45\\ \\ x=45-y\\ \\ \\ \dfrac{5}{13}=\dfrac{45-y}{y}\\ \\ \\ 5y=13.(45-y)\\ \\ 5y=585-13y\\ \\ 5y+13y=585\\ \\ 18y=586\\ \\ \\ y=\dfrac{585}{18}\\ \\\boxed{ y=32,5}$

$Sendo:\\ \\ x=45-y\\ \\ x=45-32,5\\ \\\boxed{ x=12,5}$