John bought a bicycle for $20 sold it for $30 rebought it for $40 and resold it for $50. How much money did he make or loose?

In a standard television set, the screen height is 0.75 times the screen width. If a television set measures 33 inches diagonal, what is the screen width?

Assume that the probability of having sickle cell anemia is 0.15 and the probability of being African-American is 0.45 in a given population.

Simon bought a sandwich for 7.85 he pays it with a twenty dollar bill how much will he get back

Which shape has rectangular and pentagonal faces? A. rectangular prism B. pentagonal cube C. pentagonal prism D. pentagonal pyramid

Assume that the original claim is true, and follow the directions given. what is the truth value of the claim you wind up with? all people who win lotteries are people who get lots of mail. (find the contrapositive, then convert.)

Safeway is selling cereal at $10 for 4 boxes. What is the cost per box?

the building is 1050 feet tall. sally built a scale model of the building. how tall is the model if she used the scale 1 centimeter=35 feet?

The floor of our classroom is 50 feet by 75 feet. What is the area of our floor?

Todd is attempting to predict how much money his furniture company will make based on the amount raw materials the company currently has at its disposal.

What is 422 3/7-367 5/6?