Solve: 9 + 2 + 42 × 5 − 1 = solve: (9 + 2) + 42 × (5 − 1) =

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?

Rectangle pqrs has length a and width 4b. the x-axis bisects ps and qr what are the coordinates of the vertices

How many sides does a regular polygon have if each exterior angle measure is 45 degrees explain your answer, i really don't understand this.