0.25 _ 1/5 i don't know how to show my work

Convert 1/5 to a decimal so we can compare two decimals.

1/5= 20/100= 0.20

Then compare 0.2 vs 0.25
0.2<0.25

Final 0.25>(1/5)

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.