Real Numbers & The Pythagorean Theorem

Find the square root of:
 $-\sqrt{1600}$  

(a)  

Find the square root of:
 $\sqrt{\frac{25}{49}}$  

Find the square root of:
 $\pm\sqrt{\frac{121}{81}}$  

Find the square root of (leave your answer in simplest radical form):
 $\pm\sqrt{45}$  

Evaluate the exrpression:
 $12\ +\ 7\sqrt{16}$  

(a)  

Evaluate the expression:
 $-13\ -\ 6\sqrt{9}$  

(a)  

Evaluate the expression:
 $28\ -\left(\sqrt{144}\right)^2$  

(a)  

Evaluate the expression:
 $4\sqrt{16}-5$  

(a)  

Evaluate the expression:
 $30\ -24\sqrt{\frac{1}{9}}$  

(a)  

Find the missing side of the triangle. Leave your answer in simplest radical form.