1) five of ten people earn $0, four earn $100, and one loses $100. what is the expected payoff? what is the variance of the payoff?

What is the solution for - x+y=4 and 3x-2y=-7

Imagine putting yourself in a push-up position and staying there. Assume that neither the floor nor your body moves. You will use a lot of energy but do no work. How can energy be consumed when no work is done.

Which statements are biconditional? Check all that apply.

A construction crew has just finished building a road. The crew worked for 2 7/9 days. If they built 2 1/5 kilometers of road each day, what is the total length of road they built? Write your answer as a mixed number in simplest form.

Alright, so I have a question that says this: A regular octagon has sides mesuring about 4 cm. If the octagon is divided into 8 congruent triangles, each has a height of 5 cm.

What is $109.99 plus %7.5 tax?

Find each factor polynomal 3x^3+9x^2

Jason ran 325 meters farther than Kim ran Kim ran 4.2 km how many meters did Jason run estimate to check your answer

Which of the following shows that polynomials are closed under addition when two polynomials 4x + 6 and 2x2 - 8x - 4 are added? Select one: a. 2x2 - 4x + 2 will be a polynomial b. 2x2 - 4x + 2 may or may not be a polynomial c.

Bills pencil was 6 inches long. While doing his homework, Bill used up 1 1/2 inches of his pencil. Then how long was his pencil