Answer
$\left\{-2,0,6,\dfrac{30}{3}\right\}$
Work Step by Step
The expression $\dfrac{30}{3}$ from the given set, $
\left\{-\dfrac{9}{4},-2,-\sqrt{2},0,0.6,\sqrt{11},\sqrt{-8},6,\dfrac{30}{3}\right\}
$ simplifies to $10$.
Since integers are the numbers in the set $\{...,-3,-2,-1,0,1,2,3,...\}$, then the integers in the given set are
\begin{align*}
\left\{-2,0,6,\dfrac{30}{3}\right\}
.\end{align*}