Alvin's age is two times Elga's age. The sum of their ages is 33. What is Elga's age?

The ratio of boys to girls at a party is 3:9 there are 7 boys at the party. how many girls are there

8=10-1 what is the equation

Name the intersection of plane BPQ and plane CPQ.

How to translate the graph of y = |x| to obtain the graph of y = |x + 1| - 2? shift right 1 and down 2 shift left 1 and down 2 shift right 1 and up 2

9x - (2x-6) + 8=8 - (4-3x)

Which properties are demonstrated in the equation 6 (5 * 3) = (5 * 6) * 3

B) In a play school, there are 16 red balls and the rest are white balls. The ratio of red balls to white balls is 4:5. Find the number of white balls.

How many times greater is the product 4x300 than the product 4x30?

A hemispherical dome with radius=20 feet needs 11 coats of paint, which are 1/100 inch thick ... need to use linear approximation to get the volume of paint needed for the job.

Marcus has 731 books he puts about the same number of books on each of nine shelves in his bookcase about how many books are on each Shelf