A teacher had 21 red pans. If the ratio of red pens to blue pens she owned was was 3:1, how many pens did she have total?

There are 4 grams of fiber in 1/2 cups of oats. how many grams of fiber are in 3 1/2 cups of oats?

6ax^2+6ax+6a find the greatest common factor?

simple random sample of size n is drawn from a population that is normally distributed. The sample mean, x overbar , is found to be 106 , and the sample standard deviation, s, is found to be 10.

What is 1 and and a quarter as a percentage

Your family buys a super-size pizza, Mom and dad eat 1/5 Friday night. You eat an additional 1/2 Saturday morning. How much is left? If the pizza was cut into 10 slices, how many slices are left?

In one version of trail mix, there are 3 cups of peanuts mixed with 2 cups of raisins. In another trail mix, there are 4.5 cups of peanuts mixed with 3 cups of raisins are the ratios equivalent for the 2 mixes? Explain your reasoning

Solve the equation. Check your work. 3/8 (x + 8) = 3/4 (x + 5) + 1/8

She spends $10000000 to buy a plant. Makes $13000 per boat. Write an expression that would give you her profit if she sold x boats.

A bag has 5 red marbles, 6 blue marbles and 4 black marbles. What is the probability of picking a black marble, replacing it, and then picking a blue marble

Each angle of a regular pentagon has a measure of