The perimeter of an airplane ticket is 44 centimeters. it is 15 centimeters long. how tall is it?

I think you meant plane(not an airplane), so the plane will be 6cm tall. Multiply 15 by 2, which is 30, then subtract 30 from 44, which is 12, and finally divide 12 by 2 which is 6.

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.