Question

Are these numbers rational or irrational?

https://static.k12.com/bank_packages/files/media/fddea5ba9e8b840082f48ed794271c2c.png

https://static.k12.com/bank_packages/files/media/d961ed1a5e5640f11b592a1c80383a22.png

https://static.k12.com/bank_packages/files/media/3df83141d56cf05c0baa175a25f45b86.png

https://static.k12.com/bank_packages/files/media/af2a1efbf07da0dfa303680f910f7a1c.png

Answer 1

irrational numbers cannot be written as a fraction
Their square roots will not be an integer.

So for example sqrt 9 = 3 and is rational whereas sqrt 2 is irrational.