Question

Quanto vale x + y na figura?​

Answer 1

Resposta:

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

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