Charles finished 7 laps around the track. This is 20% of the number of laps he has to do. How many laps must he do?

College textbooks are being sold online for $118 each. Using a discount, the price is lowered 20% before a tax of 7.5% is applied to the total. Find the total cost for purchasing two textbooks?

Explain how you can use place value to discribe how 0.05 and 0.005

52, 25, 77, 77,?, 451, 605

Solve for x. Show each step of the solution. 6 (3 - x) + 36 = 98 - 2 (3x + 22)

The average battery life of 2800 manufactured cell phones is recorded and normally distributed. The mean battery life is 12 hours with a standard deviation of 1.3 hours. Find the number of phones who have a battery life in the 12 to 13.3 range.

Ms smith has 28 sixth graders and 35 seventh graders for math. If she wants to break the two grades into identical groups without any students left over how many students will be I each group?

In the right triangle shown, m_Y = 30° and XY = 6. How long is Y Z?

Grandma Gretrude gave 13 pieces of jewlry and Grandma Fein gave y pieces of jewelry to the Carlson sisters to divide evenly among themselves. There are 5 Carlson sisters.

How does the initial angle of a launched projectile affect the range of te landing position?

The process or action by which one thing absorbs or is absorbed by another. is wht?