Solve by drawing a value disks 427 divided by 3

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).

Select the lengths in centimeters that would form a right triangle

The measure of an angle is 117°. what is the measure of a supplementary angle?