The sum of two numbers is 51 and the difference is 29 . what are the numbers?

Find the total area for the regular pyramid ( follow the answer set up in the picture)

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?

What is the value of the expression 9+n/3-6 when n = 12? 1. 5. 7. 12.