450a^2+242c^2+660ac in factored form

How many solutions does the pair of equations have 4x+2y=60 12x+6y=180

There are 2 benches in each car of a train ride. Two people ride on each bench. If a train has 5 cars, how many people can be on a train

In a class 30 of students, 10 are female and 22 have an A in the class. There are 4 students who are female and have an A in the class. What is the probability that a student chosen randomly from the class is a male who does not have an A?

What's the greatest common factor of 48 and 78

Jojo is planning on serving ice cream sundaes to 25 guests each tub of ice cream served 10 poeiple and costs $3.99 how much will he spend on icecream?

Which example correctly identifies a planet that is a gas giant and a planet that is terrestrial? A. Saturn is a gas giant; Neptune is terrestrial. B. Jupiter is a gas giant; Venus is terrestrial. C. Mars is a gas giant; Earth is terrestrial. D.

Bill arranges 50 small cubes in a 5 by 10 array along a bookshelf. He claims that the volume of books that the shelf can hold is equal to 50 cubic units. Is his claim correct?

Write 2.318 (18 repeating) as a mixed fraction

A park district has 25 elm trees and 20 oak trees to be planted. They are separating the trees for different areas. They want each area to have the same number of elm trees and the same number of oak trees.

A woman is 3 times as old as her daughter. After 9 years, the mother will be 2 times as old as the daughter. How old is a mother now?