Derek flips a fair coin 40 times. How many times can he expect heads to appear?

What does 1/8 equal as a percent

Six Flags Amusement Park has found that 3/5 of its customers ride the Colossus roller coaster. Of these, 1/4 ride it again. What fraction of the customers ride the roller coaster twice? a 4/9 b 3/20 c 4/20 d 3-1/4

Jennifer bought a camera with a regular price of $379. it was on sale at a 15% discount. there was a 7% tax on the sale price. how much did jennifer spend to buy the camera?

Write a story to match the following equation: 15x+2=5

A (r) is a function that gives area of a circle with radius r. It can be written in equation form as A (r) = 3.14r to the secon dpower what is the value of A (4)

You and a friend buy two fruit smoothies and leave a tip. You split the total and your half cokes to 3.60. What percent tip (in decimal form) did you and your friend leave if the fruit smoothies cost $3 each?

Terry deposit of $520 into your bank account that run simple interest each year after five years she had earned $156 in interest if no money was deposited into or withdrawn from the account what was the annual interest rate

Solve the system of equations by elimination. 2x-y+3z=-12x-y+3z=-1 x+2y-4z=-1x+2y-4z=-1 y-2z=0y-2z=0

Change 0.56 radians into degrees and minutes.

Evaluate 4P3 24 7 10 12