90 is one tenth of what number

Write a word problem that can be modeled by the equation x/4 + 8 = 10

A bag contains 4 blue marbles, 2 black marbles, and 3 red marbles. If a marble is randomly drawn from the bag, what is probability that it is NOT black? 1/2 2/9 5/9 7/9 14/19

What is 9-2 (4x+5) if x = - 4

The area of a trapezoid is 60 square inches. The sum of the bases is 20 inches. Find the height of the trapezoid.

Bob, Bill, and Joe measured their heights. They figured out that the height of Bob is equal to b cm and he makes up 8/9 of the height of Bill. The height of Bill makes up 3/32 of the height of Joe.

What is the factored form of the polynomial? x2 + 9x + 20 (x - 4) (x - 5) (x - 2) (x - 10) (x + 4) (x + 5) (x + 2) (x + 10)

290 pennies are equal to how many dimes

How can I teach surface area better?

What is the pi of S = (Πr^2) + (2Πr) h

If you have 12 friends and make three equal teams, what fraction do you use?