An E. coli bacterium has a diameter of about 5×10^-7 meter. Write this measurement as a decimal in standard notation. Explain . plz answer my question I really need to know this thx.
5×10^-7 = 0.0000005 When 10 is to a negative power, you move the decimal to the left because the number is less than positive 1. Here 10 is to the power of -7, so you move the decimal (which is after/behind 5) to the left 7 times.
