the following table shows the probability distribution for a discrete random variable. X- 11,14,16,19,21,23,24,29 P(X)- 0.07,0.21,0.17,0.25,0.05,0.04,0.13, 0.08. what is the mean of this discrete random variable? (that is, what is E(x), the expected value of X?) A) 18.59 B) 19.625 C) 19 D) 20

Ireally need subtract and simplify.(-y^2 – 4y - 8) – (-4y^2 – 6y + 3)show your work, ! i will mark you brainliest but you have to show your work.

Which of the following is the graph of y= square root -x-3

Type the correct answer in the box. consider the system of linear equations below. rewrite one of the two equations above in the form ax + by = c, where a, b, and c are constants, so that the sum of the new equation and the unchanged equation from the original system results in an equation in one variable.