Which phrase could be represented by this expression?       k/5 + 8 or  k over 5 + 8 eight more than a fifth of a number five times a number plus eight eight more than five times a number one-fifth of the sum of a number and eight

Determine the mean and variance of the random variable with the following probability mass function. f(x)=( 729divided by 91) (1 divided by 9) superscript x baseline comma x equals 1,2,3 round your answers to three decimal places (e.g. 98.765).

Find the roots of the equation below. x^2 - 6 + 9 = 0

If the scale factor between two circles is 2x/5y what is the ratio of their areas?