Question

Me ajudem com esses exercícios!! É para amanhã!!

Answer 1

Resposta:

51- b) 20m e 60m 52- d) 80m; 60m; 40m

Explicação passo-a-passo:

51-

$\frac{2}{5} =\frac{x}{50}\\\\5x=100\\\\x=\frac{100}{5} =20$

$\frac{2}{5} =\frac{y}{150} \\\\5y=300\\\\y=\frac{300}{5} =60$

52-

$\frac{180}{90} =\frac{x}{20} \\\\90x=3600\\\\x=\frac{3600}{90} =40\\\\\frac{180}{90} =\frac{y}{30}\\\\90y=5400\\\\y=\frac{5400}{90} =60\\\\\frac{180}{90} =\frac{z}{40}\\\\90z=7200\\\\z=\frac{7200}{90} =80$