Convert 146 minutes into hours

It’s 2 hours 26 minutes. 60 mins is 1 hour. So 2 hours is 120 mins which leaves 26 mins behind because 146-120=26

First step is to get rid of the square root. remember that a square root is the same as raising to the (1/2) power. see below: multiply exponents per exponent rules to get: remember you subtract exponents from the denominator and add exponents in the numerator so: simplify further: so a is the correct choice. if you don't understand this google exponent rules and it will you understand. look at the image results.