To ensure that the mass of an average grain of rock salt stays the same, what should you multiply the first factor 1.2 by so that 10 negative 2 becomes 10 negative 4

The mass of an average grain of rock salt is 1.2 x 10^-2. In part A, you multiplied 10^-2 by 10^-2 to get 10^-4. So, multiply the first factor, 1.2 , by 10^2, or 100.

The first factor will then be 1.2 x 100 = 120.

Step-by-step explanation:

Edmentum answer

5

step-by-step explanation:

i believe the answer is the polygon, heptagon.