Which equation has a solution of s=3/4

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).

1. find the area of the unshaded square 2. find the area of the large square 3. what is the area of the frame represented by the shaded region show

What is the solution to this system of equations? y= 2x - 3.5 x - 2y = -14