How many combinations of players can a coach have if he needs to pick 2 out of a total of 4?

The ratio of the number of boys to the number of girls at school is 4:5. what fraction of the students are boys?

A tool used to measure small distances and lengths.

Employees of kiddie care paid total of $2101.23 in social security tax last month,$491.42 in Medicare tax and $3789.90 in federal withholding tax. Find the toatal amount that the employer must send to the Internal Revenue Service

If there were 140 problems how many could you miss if you wanted 80%? Like if you did a test, that had 140 problems and you wanted to at leas get 80%, how many problems would you be able to miss?

Angle M has a measure of 36° and Angle N has a measure of 24°. Are these two angles congruent?

A 25 -ft ladder is leaning against a house when its base starts to slide away. By the time the base is 24 ft from the house, the base is moving away at the rate of 7 ft/sec. a. What is the rate of change of the height of the top of the ladder? b.

Without using a calculator, explain why the solution to each equation must be a real number between 1 and 2. 11^x = 12

Suppose that 5 cards are drawn from a well-shuffled deck of 52 cards. What is the probability that all 5 are not black?

I have 14 tens, 6 hundreds, 7 ten thousands, and 15 ones. What number am I?

Average speed for a driving 330 miles in 5 1/2 hours