A professor must randomly select 4 students to participate in a mock debate. There are 20 students in his class. In how many different ways can these students be selected, if the order of selection does not matter?

The level of water in a bathtub rises 5 inches in 2 hours. What represents the rate of change of the water level with respect to time?

In a circle of radius 10 cm, a sector has an area of 40 sq. cm. What is the degree measure of the arc of the sector?

Xy=-2is this true or false or neither

7 + 1/4 (12-4s) + 2s=4 solve for s

Use the table to below to find f (1). x f (x) 1 0 2 3 3 5 4 9 f (1) = 0 f (1) = 3 f (1) = 5 f (1) = 9

42 = 7/6w What is w?

Suppose you invest $10,410 in equipment to manufacture a new board game. Each game costs $2.65 to manufacture and sells for $20. How many games must you make and sell before your business breaks even? a. 500 games c. 600 games b. 550 games d.

There are 5 blue marbles, 2 red marbles, 1 orange marble, and 2 green marbles in a bag. Once a marble is drawn, it is replaced. Find the probability of selecting a blue marble, and then an orange marble.

What goes into 32 and 12

The beginning balance in a savings account is $64.98. After a deposit of $73.87, two withdrawals of $51.00 and $23.50, and $1.15 of interest earned, what is the balance? $138.85 $65.50 $64.35 $87.85