The hypotenuse of a right triangle is four times the length of one of the legs. The length of the other leg is 540⎯⎯⎯⎯⎯⎯√ feet. Find the lengths of the leg and hypotenuse no links or pics

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.