Question

34 балла, задача по геометрии

Answer 1

Ответ:

подобие треуголников

$\frac{c}{b} = \frac{x}{y} = \frac{6}{8 } \\ x + y = 70 \\ x = 70 - y \\ \frac{70 - y}{y} = \frac{3}{4} \\ 280 - 4y = 3y \\ 7y = 280 \\ y = 40 \\ x = 70 - y = 70 - 40 = 30$

$\frac{z}{y} = \frac{a}{b} = \frac{7}{8} \\ z = \frac{7y}{8} = \frac{7 \times 40}{8} = 35$

х=30

у=40

z=35