The sum of the measures of the interior angles of a convex polygon is 2160°.

How many sides does the polygon have?

A. 12

B. 13

C. 14

D. 15

Find the percent of decrease of 240 is decreased to 216. Round to the nearest hundredth if necessary

6 miles to feet 24 centimeter to inches 4 gallons of water to ounces

The partridge flew from pear tree to pear tree. He flew 26 feet and landed on a branch of the first tree.

The top speed of a peregrine falcon is 20 miles per hour less than three times the top speed of a cheetah. what is the cheetah's top speed?

The ratio of the number of boys to the number of girls in a school is 5 : 7. If there are 600 students in the school, how many are girls?

What is the a-value in the following quadratic equation? y=-x^2+x-20 Find the value

What time will it be 20 minutes later. 3:15

Evelyn is a salesperson who sells computers at an electronics store. She makes a base pay of $90 each day and then is paid a $10 commission for every computer sale she makes.

A bookstore rents books to students at $2 per book. The cost per hour of running the bookstore is $300.

12. A professional running track has two straight sections that are each 328.084 feet long. The total distance around the track is 1,312.34 feet. What is the length of the part of the track that is not straight?