A rectangular picture frame has dimensions 9 inches by 12 inches. The diagonal of the frame
is 15 inches. Do the sides of the frame meet at
a right angle? Explain.

Bis the answer! hope this

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.