abbygar543 abbygar543 Today at 4:36 PM Mathematics Answered PLEASE HELP ME 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 × 10−6 B. 7.2 × 105 C. 7.2 × 10−5 D. 7.2 × 106