Seventeen twentieths minus three fifths

A skate that normally costs $72.80 is on sale for 0.75 of the cost. What is the discount?

A hummingbird may flap its wings anywhere from 64,800 to 280,800 times in an hour. Round the smaller number to the nearest ten thousand.

Dan earns $8.25 an hour and works 20 hours a week. How much will he earn in three weeks?

Why do we use slope?

A cyclist rides her bike at a rate of 8 miles per hour. What is this rate in kilometers per hour? How many kilometers will the cyclist travel in 4 hours? In your computations, assume that 1 mile is equal to 1.6 kilometers. Do not round your answers.

What is the simpliest form of 56 1/4%

What number is it if you subtract 2 from a number and the new number and its absolute value are not equal?

The area of a triangular sign is 48 ft. If the base of the sign is 16 feet, what is the height of the sign? The height of the sign is feet.

Susan goes to her doctor because she thinks she is ill. (a) What is H0, Ha? (b) Type I error? Type II error? (c) Which of the errors are more serious and why?

Use absolute value to describe the relationship between a negative credit card balance and the amount owed.