Select each equation that the number 10^3 makes true

Two lines parallel to a third line are parallel to each other. always sometimes or never

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).

Tom had a total of $220 and he spent $35 on a basketball ticket . what percent of his money did he have left?