Find x and y on a 30 60 90 triangle number 9

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).

Enter the number of complex zeros for the polynomial function f(x) = x 4+ 5x² +6

5,600 x 10^3 = a) 560 b) 5,000,600 c) 5,600,000 d) 56,000