Suppose that the probabilities of a customer purchasing 0, 1, or 2 books at a book store are 0.4 , 0.2 , and 0.4 , respectively. What is the expected number of books a customer will purchase?

What is an open equation?

A school is arranging a field trip to the zoo. The school spends 875.49 dollars on passes for 29 students and 4 teachers. The school also spends 279.56 dollars on lunch for just the students.

Which ordered triple represents all of the solutions to the system of equations shown below? 2x - 2y - z = 6 -x + y + 3z = - 3 3x - 3y + 2z = 9 a) (-x, x + 2, 0) b) (x, x - 3, 0) c) (x + 2, x, 0) d) (0, y, y + 4)

Suppose 40 cars start at a car race. In how many ways can the top 3 cars finish the race?

To make 5 apple pies you need about 2 Pounds of apples how many pounds of apples do u need to make 20 pies

8 3/4 miles in 5/8 write as a rate?

Justin is going to the school dance. He went to the mall and bought three new shirts for $21.99 each and a new pair of dress shoes for $45.59. Which two operations would be used in order to figure out how much he spent at the store? A.

I need an equation from this question so I can graph and solve by substitution and elimination. The question the following, Stefan's school is selling tickets to annual dance competition.

Evaluate the expression for x = 13, y = 7: y + 5 Enter the correct answer.

Which represents a measure of volume? A. 5 cm3 B. 5 square cm C. 5 cm D. 5 cm?