A test consists of 20 problems and students are told to answer any 15 of these questions. In how many different ways can they choose the 15 questions?

15,504

20,145

23,670

25,890

A carousel turns counterclockwise in one degree sections, a total of 280 times, The carousel has turned a total of degrees?

The rectangle below has an area of 81-x^281-x 2 81, minus, x, start superscript, 2, end superscript square meters and a width of 9-x9-x9, minus, x meters. what expression represents the length of the rectangle?

Contains (4, 9) and has a slope of 5.73

Ariel is filling a giant beach ball with air. The radius of the beach ball is 30 cm. What is the volume of air that the beach ball will hold?

Find the lateral surface of the cylinder. Round your answer to the nearest hundredth Height:9 Radius:5

Y=2c+3 Y=-2c-3 What does c and y equal?

Solve the inequality for x. - 4x - 6 <50

What is 3/7 reduce to its lowest term

5/6+1/3, 5/9-1/3, 15/8-2/3

What is the equivalent ratio of 1:2