What is the missing number in the factor tree? A. 9 B. 8 C. 5 D. 2

The head librarian at the library of congress has asked her assistant for an interval estimate of the mean number of books checked out each day. the assistant provides the following interval estimate: from 740 to 920 books per day. what is an efficient, unbiased point estimate of the number of books checked out each day at the library of congress?

Simplify (a/b - b/a) times (a - a^2/a+b) a - a^2/a=b is a mixed number

What is the probability of drawing three queens from a standard deck of cards, given that the first card drawn was a queen? assume that the cards are not replaced.