What is The midpoint of G ( -2, -8 ) and H ( -3, -12 )

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).

What set does not contain -3 the set of all real numbers the set of all integers the set of all whole numbers the set of all rational numbers

Could somebody me with this radical simplification?