David has 80$. he spent 4/5 of his money on books. howmuch money did he have left? use a tape diagram to solve the problem

The difference between Noah's mean and Gabriel's mean is. The ratio of the difference in the mean to Noah's MAD is. The ratio of the difference in the mean to Gabriel's MAD is.

Half of your baseball card collection got wet and was ruined. You bought 13 cards to replace some that were lost. How many did you begin with if you now have 32?

The measure of an angle is forty-four times the measure of its supplementary angle. What is the measure of each angle?

A simple random sample is chosen in such a manner that

Find the geometric mean of 125 and 5 ...

Which equation is represented by the phrase "one-fourth of a number, increased by eight equals sixteen"?

Explain why a square can be classified as a rectangle

Find the simple interest. principal = $10,400; rate = 12.5%; time = 11 years

Mr. Jackson ran 7/8 mile on Monday he ran 3/8 of a mile on Wednesday and 5/8 mile on Friday on witch day did Mr Jackson run the shortest distance

What is 0.2 reapted