Three postal workers can sort a stack of mail in 20 minutes, 25 minutes, and 100 minutes, respectively. Find how long it takes them to sort the mail if all three work together.

The answer must be a whole number

kammi wrote the numbers - 3, - 3.5, 4, and - 4.5 in order from least to greatest. How did she write the numbers?

How do I show my work for 52 divided by 8

Is the relation a function or not? * A function Not a function

Solve -12 = 2x + 2 Solve x/-2 + 7 = 1 Solve x/1.7 - 2.7 = 3.5 Solve -2x + 4 = 20

6 1/2+n=12. n= What does n equal.

What is 18974627 + 647738?

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?