In the equation below, variables X and Y represent two matrices. Which property of matrix addition is illustrated below? X+ Y=Y+X
O inverse property
O commutative property
O associative property
O identity property

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?

Can anyone me with 32,33,36,37,and 40.

According to modern science, earth is about 4.5 billion years old and written human history extends back about 10,000 years. suppose the entire history of earth is represented with a 10-meter-long timeline, with the birth of earth on one end and today at the other end.