A box contains 8 red and 5 green marbles. Two marbles are randomly selected from the box, without replacement, and without regard to order. What is the expected number of red marbles?

A school is contemplating purchasing new computers for its computer lab. Each computer costs $1125. The school has a budget of $8,000. What are the possible numbers of computers that the school can buy?

A local library shows movies on Thursday evening. the library administrator has chosen the next 6 movies he will show, but he has not decided in which order to show them. how many possible orderings of the six movie are there?

Brandon had already read 6 books this year before joining a book club, and he plans to read 1 book every month now that he has joined. If Brandon has read 15 books so far, how many months has he been with his book club?

The area of a rectangle is 252 cm², and the length is 3 less than 2 times the width. Find the dimensions of the rectangle.

Sonia read 2 pages of a book per minute. If Sonia read all pages of the book at the same rate, which equation shows the total number of pages, y, that Sonia read in x minutes

What fraction is equal to75% of 1/2

Cone volume. height 7 mm radius 3

Use tens to solve 13-7

Sam's van travels 208.8 miles on 9 gallons of gasoline. Hasan's small car travels 234.4 miles on 8 gallons of gasoline. What is the difference between the vehicles in the gallons of gasoline consumption per mile?

Factorise fully the following: a) x² + x b) 3x - 9x^2 c) 7x^3 - 35x d) 4x^3 + 24x^2