Question

hallen a+b+c porfavor ayudenme a resolver doy coronas​

Answer 1

RESOLUCIÓN:

$\frac{2}{a} = \frac{7}{b} = \frac{10}{c} = k$

Resolvemos:

$\frac{2 \times 7 \times 10}{a \times b \times c} = {k}^{3} \\ \frac{140}{1120} = {k}^{3} \\ \frac{1}{8} = {k}^{3} \\ \sqrt[3]{ \frac{1}{8} } = k \\ \frac{1}{2} = k$

Hallamos lo que nos piden:

$\frac{2 + 7 + 10}{a + b + c} = k \\ \frac{19}{a + b + c} = \frac{1}{2} \\ \frac{19}{ \frac{1}{2} } = a + b + c \\ 38 = a + b + c$

RESPUESTA:

$C) \: 38$