SOLUTION: Determine if this is rational or irrational: sqrt 77 This would be rational correct? I know 11 can go in to but it is as well and odd number, so i am not real sure. Thank you

Algebra ->  Square-cubic-other-roots -> SOLUTION: Determine if this is rational or irrational: sqrt 77 This would be rational correct? I know 11 can go in to but it is as well and odd number, so i am not real sure. Thank you      Log On


   



Question 67966: Determine if this is rational or irrational:
sqrt 77
This would be rational correct? I know 11 can go in to but it is as well and odd number, so i am not real sure. Thank you for the help!

Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
rational or irrational:
sqrt 77
--------
Irrational
COMMENT: sqrt(x) is only rational if x is a perfect square.
77 is not a perfect square, so sqrt 77 is not rational; it is
irrational.
cheers,
Stan H.