At what speed is the oxygen consumption the same for a walker as it is for a runner?

Determine whether the set of whole numbers is closed under addition. explain why the set is or is not closed. give an example.

Select the correct answer. joshua likes to read. he read 6 books when he was 6 years old. every year he doubled the number of books he read the previous year. how many total books did he read between the ages of 6 and 10? a. 60 b. 90 c.186 d.187

How do you use the elimination method for this question? explain, because i really want to understand!