The table below shows the probability distribution of students in a high school with 1500 students. What is the expected value for the age of a
randomly chosen student?

The inside wheels of a car traveling on a circular path are rotating half as fast as the outside wheels. the front two wheels are six feet apart. what is the number of feet in the path traced by the inside front wheel in one trip around the circle? express your answer in the form "k \pi", where k is an integer.

Cody was 165cm tall on the first day of school this year, which was 10% taller than he was on the first day of school last year.

Find the least common denominator for thesetvo rational expressions.n^2/n^2+4n+4 -3/n^2+7n+10