The choices are X - 2y = 10
2x + y = 6
Y - 2x = 4
X + 2y = - 4
PLEASE HELP!!!

there are 96 wizards

step-by-step explanation:

20% of 120 is 24. if you subtract 24 from 120 you get 96

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.