Rectangle ABCD is graphed in the coordinate plane. The following are the vertices of the rectangle: A(-7, -5), B(-7,6), C(-4, 6), and D(-4,-5).
Given these coordinates, what is the length of side CD of this rectangle?

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 is the result of adding the system of equations? 2x+y=4 3x-y=6

You eat $0.85 for every cup of hot chocolate you sell. how many cups do you need to sell to earn $55.25