Question

Calcule o valor numérico da expressão.

a)$\frac{1}{4} )^2. \frac{4}{5} + \frac{2}{5} : (\frac{2}{3} )^3 + \frac{7}{5}$

Answer 1

$(\frac{1}{4}) ^{2} . \frac{4}{5} + \frac{2}{5} : ( \frac{2}{3} )^{3} + \frac{7}{5}$

$\frac{1}{16} . \frac{4}{5} + \frac{2}{5} : \frac{8}{27} + \frac{7}{5}$

$\frac{4}{80} + \frac{2}{5} . \frac{27}{8} + \frac{7}{5}$

$\frac{1}{20} + \frac{54}{40} + \frac{7}{5}$

$\frac{1}{20} + \frac{27}{20} + \frac{28}{20} = \frac{56}{20} =\boxed{\boxed{ \frac{14}{5} }}\ \ \ \ \ \ \ \ \ \ ok$