You randomly select an integer from 0 to 9 (inclusively) and then randomly select an integer from 0 to 19 (inclusively). What is the probability of selecting 7 both times?

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.

Idon’t know i’m in the same boat