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

Answer 1

is A

Explanation:

i did the test and i got it wrong but have the answer

Answer 2

7.2x10^-5

Explanation:

you count to the right 5 zero's making your number a negative and you have five zeros making it 7.2x10 to the -5th power