Answer
$\dfrac{\sqrt[3]{700}}{10}$
Work Step by Step
Rationalizing the denominator of $
\sqrt[3]{\dfrac{7}{10}}
$ results to
\begin{array}{l}
\sqrt[3]{\dfrac{7}{10}}
\cdot
\sqrt[3]{\dfrac{10^2}{10^2}}
\\\\=
\sqrt[3]{\dfrac{7\cdot10^2}{10^3}}
\\\\=
\dfrac{\sqrt[3]{700}}{10}
.\end{array}