Which number is not a composite number 2 9 15 21

Tony's recipe for soup calls for a 1 and 1/4 teaspoon of salt. He wants to use one half that amount. how much salt will he use?

A segment bisects one of the acute angles of a right triangle ABC and divides the opposite side into lengths 8 and 12. Find the perimeter of triangle ABC

1200+0.0005x=1500+0.0015x

The owner of a stereo store wants to advertise that he has many different sound systems in stock. The store carries 8 different CD players, 10 different receivers, and 9 different speakers.

If a = m 2 + 2, what is the value of a when m = - 3?

4. Solve the system of equations by inspection. Explain your reasoning. -2x+4y = 5 -2x+4y = 6

What percentage of the data values falls between the values of 3 and 24 in the data set shown? A box-and-whisker plot. The number line goes from 0 to 25. The whiskers range from 3 to 24, and the box ranges from 6 to 19. A line divides the box at 15.

Alice plays basketball. In one game she shoots 21 free throws and makes 81.25% of them. Estimate how many feer throws she makes?

Find the value of the expression 4*2-6+8*3+4

A bag contains 8 green marbles, 14 red marbles, 6 white marbles, and 2 black marbles. What is the probability of drawing a red marble out of the bag? A. 1/30 B. 1/14 C. 7/15 D. 14/16