What is the reason for statement 7 of the two column proof? 1. angle addition postulate 2. ruler postulate 3. angle congruence postulate 4. linear pair postulate

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).

Which one is true about the hexagons ?

A(1,1) b(-3,0) c(-4,-1) d(3,-2) drag it to correct position