Abraham is three time as old as Sylvia .in eight years time , Abraham will be twice as old as Sylvia .how old is Abraham​

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).

In the diagram of circle o, what is the measure of zabc?

Plot a point at the y-intercept of the following function on the provided graph. 3y=-5x+7 20 points