Question

PLEASE HELP!!! Explain how you got the answer! Will give brainliest to best answer!

Answer 1

You want one non-zero digit in front of the decimal. Count how many times the decimal must move to be behind the first non-zero digit. This is the power on the ten. If it moves to the left, the power is negative. If you must move it to the right it is positive.

I counted 7 moves to get to behind the 6.

6.85 x 10^ -7

Answer 2

The correct answer is 6.85 x 10-7 . Check the exponent of the 10 then move the decimal point that many places to the left.