Maggie's brother is 4 years younger than three times her age. The sum of their ages is 20. How old is Maggie?

What is the probability of rolling a 5 and 3 on two number die?

There are 239 people in the first six rows of the movie theater if the same number of people are in the next six rows about how many people are in the first 12 rows

When a number is written in scientific notation how can you tell right away whether or not it's greater than or equal to 1

Melinda can paint 1/4 of a wall in the same time that Desiree can paint 2/5 of a wall. How much of a wall will Melinda have painted when Desiree has finished painting 1 wall?

Evaluate each expression 1/7 + - 5/7

A tank contains 4000 liters (L) of a solution consisting of 234 kg of salt dissolved in water. Pure water is pumped into the tank at the rate of 9 L/s, and the mixturelong dashkept uniform by stirringlong dashis pumped out at the same rate.

Line passing through (9, 2) and (-2, 6)

If cookies cost $2.40 each, how many can be bought with $40?

Divide 35b^5 + 20ab^3 + 20a^2b^2 by 5b^2

When 0.3 (4x - 8) - 0.5 (-2.4x + 4) is simplified, what is the resulting expression?