Eamon used a number line to compare two numbers, 0.48 and 3/5. one number was less then 1/2 and the other number was greater them 1/2. which number was less then 1/2.

0.48 because 3/5 is greater than 1/2 so you know that 0.48 is less than 1/2.

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.