Alice burned 320 calories at the gym. She burned 6 calories per minute on the treadmill and 10 calories per minute on the elliptical. Alice exercised for 45 minutes in all. How many minutes did she spend on the treadmill?

A board is 72.39 centimeters long. How long is the board in inches? Use the following conversion: 1 inch is 2.54 centimeters.

Johnny is older than Jeff. The Difference of their age is 23. And the sum of their ages is 49. Find the ages of each

A student received a 75% on an exam. If there where 20 questions on the exam, which ratio would show the number of questions answered correctly?

How many subsets of the set {1, 2, 3, ..., 12} contain exactly one or two prime numbers?

Marty uses a credit card for only necessary purchases. The interest rate charged by the credit card company is 19.9%. If he maintains an average balance of $3,500 owed on the card, how much will have have paid in interest after one year?

What numbers round to 960

Can you solve this using matrices by row operations 4x+y-2z=-6 2x-3y+3z=9 x-2y=0

Use the data in the table below to complete the exercise. Round off your answers to a tenth of a percent. Blood types per 100 people.

Find the ares of a sector with the central angle of 200 and a diameter of 5.3 cm. Round to the nearest tenth

Jared ate 1/4 of a loaf bread. He cut the rest of loaf into slices. How many slices of bread did he cut?