What is the area of a 20-gon with radius 5 in

Geoff thinks of a number. He deducts five from it and the divides the result by three. His answer is 25. what number did he start with?

Lin earns a salary of $65000 a year. His benefits are equal in value to 40 percent of his salary. What is the value of Lin's benefits?

How do I solve h/9 > 1/4? This is needs to be solved by solving inequalities by multiplication and division

What is one third 1/3 plus one seventh 1/7?

Stephanie read 72 pages on sunday and 83 pages on Monday. About how many pages did Stephanie read during the two days?

A cross-country skier covered 1/3 of her race in one hour, 2/5 of the race during the next hour, and the remainder of her race in the third hour. What fraction of the race did the skier cover during her third hour?

Explain why the diagram shows that 6 (3 + 4) = 6.3 + 6.4.

A swimming pool has an area of 40 square meters. It's length is 8 meters. What is the width?

If you save $4,500 at an interest rate of 13 percent per year, how much will you have at the end of seven years?

Many performances at a circus take place in a circular ring. One circus has a ring with a diameter of 300 feet. Find the circumference of the circle.