I'm calculaing tip and tax on a total cost. Do I need to add th tax to the total, then calculate tip, or calcualte tip on the original cost?

Name 4 numbers that equal 15

How do you Divide 7:135

1.34 expressed as a percent

A study of three hundred teenagers found that the number of hours they spend on instant messaging sites each week is normally distributed with a mean of 13 hours. The population standard deviation is 5 hours.

14 fl oz = how many cups

The stem-and-leaf plot shows the ages of the volunteers at a beach cleanup. How many of the volunteers were less than 20 or older than 40 years old?

If 2x = 14 then x=7

Solve the sum of two numbers is 23. one number is one less than twice the other. find the two numbers

4.5 (8-x) + 36=102-2.5 (3x + 24) with work step by step will give brainliest

What is the surface area of 5, 8, and 3