Which pair of numbers is relatively prime?

A:7 and 21

B:4 and 15

C:6 and 9

D:9 and 27

Use the formula for the ares of a trapezoid A=h (b^2+b^2/2) = where A is area b1 and b2 are the length of the bases and h is the height to answer the question how many square fet of grass and there on a trapezoidal field with a height of 75 ft bases

Matthew used 1/5 of a box of flour for cooking and 3/4 of the remainder to make bread. The rest of the flour was packed equally into 5 containers. What fraction of the total amount of flour was in each container?

How many tens are in 500,000?

What is the value of x in this equation? 4 (x + 6) - 3x = 26

If 3 marbles are drawn from a bag of 12 marbles consisting of three red, four white and five blue, without returning them to the bag, what is the probability that the first marble is red the second is white and the third is blue?

A rectangular restaurant kitchen has a perimeter of 34 meters and an area of 70 square meters. What are the dimensions of the kitchen?

Abby's weight has triped since her first birthday. if w represents the amount abby weighed on her first birthday, write an expression to show how much abby weighs now

Nevaeh mowed 2 lawns in 4 hours. What was her rate of mowing in lawns per hour?

A bookstore sells 4 fiction books for every 1 non fiction book it sells which statement is true A. For every 7 fiction books sold 4 nonfiction books are sold B. For every 25 fiction books sold 3 non fiction books are sold C.

Turn 276% into a mixed number