Zachary completes a hypothesis test and finds that he rejects the null hypothesis. which statement gives a reason for rejecting the null hypothesis?

The size of a certain cell is 2.5*10^-9m. another cell is 1.5*10^3 times larger. how large is the larger cell in scientific notation?

Describe how you can act financially responsible.

Hannah has 5 more than twice the number of baseball cards that leo has. if leo has x cards, which expression shows the number of baseball cards hannah has?