#### Answer

$\dfrac{9}{\sqrt{3a}}=\dfrac{3\sqrt{3a}}{a}$

#### Work Step by Step

$\dfrac{9}{\sqrt{3a}}$
Multiply the fraction by $\dfrac{\sqrt{3a}}{\sqrt{3a}}$ and simplify:
$\dfrac{9}{\sqrt{3a}}=\dfrac{9}{\sqrt{3a}}\cdot\dfrac{\sqrt{3a}}{\sqrt{3a}}=\dfrac{9\sqrt{3a}}{\sqrt{(3a)^{2}}}=\dfrac{9\sqrt{3a}}{3a}=\dfrac{3\sqrt{3a}}{a}$