Boris sold 400 liters of soda at a baseball game. how much is this in milliliters?

Which of these choices show a pair of equivalent expressions?

In the diagram of circle a what is m

Aproduction manager test 10 toothbrushes and finds that their mean lifetime is 450 hours. she then design sales package of this type of toothbrush. it states that the customers can expect the toothbrush to last approximately 460 hours. this is an example of what phase of inferential statistics