157 rational or irrational 2060719001 rational or irrational

1)-57 rational or irrational? 2)0.60719001 rational or irrational?3)what is the answer to this:<1/root 121>4)what is the root of 384?

these are math questions. please help me answer.there are 4 questions.

Solution

1) 57 is rational because it has an a finished answer

2) 0.6.... is irrational because it cannot be written as a fraction

3) 1/11

4) simplified is 2 times root <94>