Find the volume of a hemisphere (cut your volume in half) with a radius of 7 inches. Round to the nearest tenth.

For a read-a-thon, jay and odhràn each started reading a book at the same time and continued reading for several hours. jay's book had 278 pages, and he read 55 pages per hour. odhràn's book had 238 pages, and he read 45 pages per hour. after how many hours did they have the same number of pages left, and how many pages were left?

The hawaiian alphabet has 12 letters. how many permutations are posible for each number of letters?

Michael is training for a marathon. in his first week he plans to run 8miles. what path should he take