Answer
$\frac{\sqrt{21}}{7}$
Work Step by Step
$\sqrt{\frac{3}{7}}$
Use the quotient rule for square roots.
$\frac{\sqrt3}{\sqrt{7}}$
Rationalize the denominator,
$\frac{\sqrt3}{\sqrt{7}}\times\frac{\sqrt{7}}{\sqrt{7}}$
Simplify.
$\frac{\sqrt3\times\sqrt{7}}{7}$
Use the product rule for square roots.
$\frac{\sqrt{21}}{7}$
