Question

Jamie used a microscope to measure the diameter of a hair. She found that the diameter of

the hair was 0.000072 meter. How is this number written in scientific notation?
A 7.2 × 10^-5

B 7.2 × 10^6

C 7.2 × 10^5

D 7.2 × 10^-6

Answer 1

7.2x10^-5

Explanation:

I did this before

Answer 2

your answer is A. 7.2x10^-5