Yesterday, Matthew went surfing and was out for 4 hours. Today, he spent 75% more time than yesterday riding waves. How long was Matthew out surfing today?

A road race is 10 kilometers long. after the starting line there is one water station every 0.4 kilometer including at the finish line. How many water stations are there

An autopilot attempts to maintain an airplane's altitude at a constant 18000 feet. because of random variations, the actual altitude x is a normal random variable with mean 18000 feet and variance=2500 feet2.

What are all the powers of 4 in the range of 4 to 1000?

The speeds of a car and a train after they activate their emergency brakes are represented by the following tables: Car Time (seconds) Speed (m/s) 0 69.4 2 34.0 4 16.7 6 8.2 8 4.0 Train Time (seconds) Speed (m/s) 0 88.9 2 50.1 4 28.1 6 15.8 8 8.

A basket holds n apples. You pick 2n-3 apples, and your friend picks n+4 apples. Write an expression that represents the number of apples you and your friend picked. Interpret the expression.

On the first day of the fiscal year, a company issues $65,000, 6%, five-year installment notes that have annual payments of $15,431. The first note payment consists of $3,900 of interest and $11,531 of principal repayment. a.

Which set of side lengths could be used to form a right triangle?

What's the greatest common factors for 24 and12

john is 2 years more than twice as old as david. the sum of their age is 14, find the age of each child

The ratio of men to women working for a company is 5 to 4. If there are 96 women working for the company, what is the total number of employees?