Question

Please help I've been getting this same problem wrong all day lol

Answer 1

Answer:

$9\sqrt{2}$

Step-by-step explanation:

$=3\sqrt{2}+6\sqrt{2}$

$\mathrm{Add\:similar\:elements:}\:3\sqrt{2}+6\sqrt{2}=9\sqrt{2}$

Answer 2

Answer:

I came up with the answer of 12.27 so D

Step-by-step explanation:

I hope this helps :3