Question

How do I do this! I have no clue what to do

Answer 1

If you write out the numbers, the E. Coli is 0.0000005 m wide while a hair is 0.000017. Less zeros after the decimal mean it is a larger number because it is closer to 1. So, a human hair is wider.

Answer 2

You just sold 5×10 and1.7×10