PLEASE HELP DUE IN 15 MINS THEN IM LOCKED OUT u don’t have to be sure if it’s right and answer the ones you know pls just number them starting from isotopes like 1. is isotope 2. Is whatever the answer is PLS I’ll brain list u!

Acm ruler with main graduations from 1 to 10 from left to right there are 10 secondary graduations between each of the main graduations there is a line that begins. at the left end of the ruler 10 secondary graduations to the left of the “1 main graduation the right end of the line ends on the eighth secondary graduation to the right of 3 how long is the line