Debbie is borrowing 3 books from her friend who has a collection of 45 books. Which of the following expressions represents the number of ways Debbie can choose a group of 3 books?

a. P (45, 3)

b. C (45, 3)

b. 45!

A piece of wood is to be cut so that it is square and has an area of 45 square inches. How long should the sides be, rounded to the nearest tenth of an inch? a. 6.7 inches c. 8.6 inches b. 22.5 inches d. 11.3 inches

When comparing prices for activities at a local recreation center, you notice that the center charges different prices on different days of the week. For example, riding a go-kart costs $10 on Saturday and Sunday and $5 on Monday through Friday.

What does coefficient in math mean?

looking at the pole at the end of the pier. john counted 20 waves in 10 seconds. he also estimated that wavelength was 4 meters. what was the approximate wave speed?

Is y=24x proportional or nonproportional

Given a right triangle with legs of 3 cm and 12 cm, which triangle is similar? A) A right triangle with legs of 6 cm and 18 cm A right triangle with legs of 9 cm and 18 cm A right triangle with legs of 6 cm and 24 cm A right triangle with legs of 8

What is the minimum or maximum value if the function X^2 + 30x + 21

21X+7Y = 42 - 5X+5Y=10

Tom wants new carpeting for his bedroom. His room is a 9 metres by 7 metres rectangle. How much carpeting does he need to buy to cover his entire bedroom floor

What is the area of this figure?