A hanging spring has length 10cm. A 100g mass is hung from the spring stretching it to 12cm what will be the length of the spring if this is replaced by a 200g mass

Depending on how the continental plates move it can cause a continental scale shift.

Make them both to where they have the denominator of 18that makes 3/2 equal 27/18 and 1/9 equal 2/18so now you have  27/18x+5=2/18subtract 5 from the other sideso now you have 27/18x+2/18-5then subtract 2/18 from 27/18 to get 25/18x=-5then divide 25/18 by -5 and your answer will be  -5/18