How long did it take a bike to travel 20 miles at 12 mph?

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?

The president of a certain university receives a salary that is three times the salary of one of the department heads. The total of the two salaries is $240,000

What can 31/113 divide into

Ms. Sky deposits $4,400 into a new account at chase. If the interese rate is 6% how much will be in her account after 4 years

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