9m+14=2m How do I solve and check answer?

H²+10h=-21 solve quadratic trinomials

Word problem for 10n=420

What makes 84 cents?

Sunset gold paint is made by mixing 3 parts yellow to 1 part red. how much red is to be mixed with 2 quarts of yellow?

How do you get the area of quarter of a circle

Your office manager has given you a budget off 30000 to replace the old computers in your office with new ones. Each new computer will cost 550$. You make a quick count that determine that 15 computers will need to be replaced.

What is 304,800,400 in expanded form?

How many 1/3 are in 4 wholes

A math teacher gave her class two tests. 76% of the class passed the first test. 58% of the class passed both tests. What is the approximate probability that a student who passed the second test, given that he passed the first test.

What is 75% of 420 minutes?