When are two expression considered to be equivalent

Greatest common factor of 21, 35, 49

Suppose we want to choose 3 letters, without replacement, from the 4 letters A, B, C, and D. (a) How many ways can this be done, if the order of the choices matters? (b) How many ways can this be done, if the order of the choices does not matter?

What consumer protection agency is known by the acronym sec? a.) safe expansion commission b.) society of economical consumers c.) stock exchange control d.) securities and exchange commission

One serving of scrambled eggs contains 7.8 grams of fat. Mr. Jensen is trying to eat no more than 60 grams of fat per day. if he eats 1.5 servings for breakfast, how many more grams of fat can he eat that day

Mr. duc asked perry to set up 450 chairs in a large hall. perry puts 20 chairs in each row. he has already set up 15 rows of chairs. how many more chairs must he set up?

Michael and Alexandra left their home at 8:00am to drive to new york. Michael drove at 55 miles an hour and arrived at 5:00 pm. Alexandra drpvw at 45 miles an hour and arrived at the same place as Michael. At what time did Alexandra arrive?

The graph of a proportional relationship passes through (9,18) and (1, y). Find y.

If 40% of a number of 56 what is the original number

Steve watched television for 3/4 hour on monday and 5/6 hour on tuesday how much longer did he watched television on tuesday than monday

What is - v+5+6v=1+5v