Question

1. select all that apply. when is it useful to use numbers written in scientific notation? any time when a number is very small when a number is very large when a number is a factor of 10 when a number is a factor of 100

Explanation:

Scientific notation is used to express very large or very small numbers in a more concise form. It is not necessary for any - time use or for numbers that are factors of 10 or 100.

Answer:

when a number is very small, when a number is very large