A and b are positive integers and a–b = 3. Evaluate the following:

9^(1/2b)÷3^a
27^(1/3b)÷9^(1/2a)
125^(1/3a)÷25^(1/2b)

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?

Will give brainliest immeadeately true or false: the origin woud be included in the solution set for the inequality: y< 2x-5

Mr. brettler is hanging up a 5-foot tall rectangular welcome sign in the gym. he has drawn a sketch on a coordinate grid. he has the lower vertices of the sign at (9, –3) and (–6, –3). where would the upper vertices be on the grid?