In Mrs. Hu's classroom, 4/5 of the students have a dog as a pet. Of the students who have a dog as a pet also have cat as a pet. If there are 45 students in her class, how many have both a dog and a cat as pets?

If you were to roll the dice one time what is the probability it will not land on 4?

One card is drawn from a standard deck of cards. What is the probability it is an ace or red?

Solve 7.8*10^ (-4) - 2.4*10^ (-7)

Given the function f (x) = 3x + 1, evaluate f (a + 1)

Christina is saving money to buy a bike that cost 189 he saves 99 so far he plans on saving $10 each week and how many weeks will he have enough money to buy the bike use a bar diagram to solve arithmetically then use an equation to solve

For the following set of baseball runs scored at each game, identify: • The mean • The median • The mode • The range • The interquartile range 12, 16, 16, 21, 22, 25, 28 Which measure of center would the baseball team want to use to show what a

Combine like terms x^2 + x + x^2 + 1

Why is square root of 2 irrational?

If a 28 ft rope is cut into two sections with one section 3 times as long as the other section, how long is the shorter piece?

A fair number cube, labeled with 1 through 6 is rolled four times. What is the probability of rolling a 6 all four times?