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

The sum of two numbers is 30. Their difference is 6. What are the numbers? 6 and 24 12 and 18 10 and 20 8 and 14

All acute angles = ?

Patty spent 40 minutes getting ready for school. During that time, she spent 5 minutes taking a shower, 3 minutes getting dressed, and the rest of the time eating breakfast. What part of the 40 minutes did Patty spend eating breakfast?

What is the domain of y=log4 (x+3)

What is the median for 4, 8, 10, 5, 9

Share 1980 in the ratio 4:7

Power by 10 10 and theres a 4 above it

What fraction is equivalent to 4/3

7-3 (6c+14) >5 (1-2c) Solve for c.

If a red suit is drawn from an ordinary deck of cards, what is the probability that the card is a diamond?