What is the greatest common factor for 21 and 40?

Whats 70/100 as a decimal

Students are selling hand-made magnets at the school craft fair. One magnet costs $0.30, 2 magnets cost $0.43, 3 magnets cost $0.56, and 4 magnets cost $0.69. If this pattern continues, how much will 6 magnets cost? Explain how you found your answer

The half-life of a radioactive kind of element is 18 minutes. How much will be left after 36 minutes, if you start with 32 grams of it?

On a certain TV station there are four commercials during every 30 minute. How many minutes of TV do you need to watch to have watch more than 10 commercials

1/6 * n = 3 How do I solve this problem?

You roll a standard number cube. Use the probability of rolling an even number to find the probability of rolling an odd number

Tell which measurement tool you would use to measure the area of a student desk. Explain your thinking.

I need work shown write. 569 as a percent

Triangles def and d'e'f' are shown on the coordinate plane below: what rotation was applied to triangle def to create triangle d'e'f'? a. 90° clockwise b. 180° c. none of the above d. 90° counterclockwise

Marvin Martian, Aly Alien, and Hank Human are all looking for a hidden spaceship. Their probabilities of finding the spaceship first are as follows: P (Marvin wins) = 30% P (Aly wins) = 0.