Question

( teorema de de tales). Determinar o valor de x e y nas figuras:

Answer 1

Resposta:

Teorema de Tales

$\dfrac{10}{8}=\dfrac{7}{y}\\ \\ 10y=56\\ \\ y=56:10\\ \\ \boxed{y=5,6}$

$\dfrac{10}{x}=\dfrac{7}{14}\\ \\ 7x=140\\ \\ x=140:7\\ \\\boxed{ x=20}$

Answer 2

Resposta:

x = 20

y = 28/5

Explicação passo a passo:

$\frac{10}{x} =\frac{7}{14}\\\\\frac{10}{x}=\frac{1}{2}\\\\1.x=10.2 \\\\x=20 \\\\\frac{20}{8} =\frac{14}{y} \\\\\frac{5}{2} =\frac{14}{y} \\\\5y=28\\\\y=\frac{28}{5}$