Question

e dessas aqui, mto obg ♡​

Answer 1

Resposta:

A) 4 horas.

B) 10 dias.

C) 36 dias.

Explicação passo-a-passo:

EXP. A)

$\left[\begin{array}{ccc}64 km/h \ \ \ 5h \\ 80 km/h \ \ \ x\end{array}\right] = \left[\begin{array}{ccc}64 km/h \ \ \ x \\ 80 km/h \ \ \ 5h \end{array}\right] = \frac{64*5}{80} = \frac{64}{16} = 4$

EXP. B)

$\left[\begin{array}{ccc}15 \ \ \ 600 \\ x \ \ \ 900\end{array}\right] = \left[\begin{array}{ccc}15 \ \ \ 900\\ x \ \ \ 600\end{array}\right] = \frac{15.600}{900} = \frac{90}{9} = 10$

EXP. C)

$\left[\begin{array}{ccc}24\ \ \ 15\\ 20 \ \ \ x\end{array}\right] = \left[\begin{array}{ccc}10\ \ \ 15\\ 24 \ \ \ x\end{array}\right] = \frac{24*15}{10} = \frac{24*3}{2} = \frac{12*3}{1} = 36$