What do you need it when adding or subtracting rational expressions?

Simplify each of the following expressions to find the length of the tightrope

A used automobile dealership recently reduced the price of a used compact car by 5% if the price of the car before discount was $18,600 find the discount and the new price

You and a friend go to a mexican restaurant. you order 2 tacos and 3 enchiladas and your friend orders 3 tacos and 5 enchiladas. one bill was $7.80 plus tax and the other bill was $12.70 plus tax. how much was each taco and each enchilada?

Find the Greatest Common Factor of the following numbers. 9, 15 and 36

Gina had $15. Then she bought a T-shirt for $8.75, a baseball cap for $1.99, and a refrigerator magnet for $0.75. How much money did she spend in all?

Which is greater 1/5 or 1/10

Simplify. 4 (x - 5) + 2 (y + 6) - 10 A) 4x + 2y - 18 B) 4x + 2y + 18 C) 4x + 2y - 9 D) 6xy - 15

Suppose that IQ scores have a bell-shaped distribution with a mean of 99 and a standard deviation of 14. Using the empirical rule, what percentage of IQ scores are between 57 and 141?

Find the probablitty of z occuring in the indicated region

Two thirds of the campers at a summer camp signed up for arts and crafts class. Of these campers one fifth signed up for wood working, What fraction signed up for wood working?