Answer:
9.54
Step-by-step explanation:
<span>2.1e-10
= 2.1 x 10^-10
= 0.00000000021
hope it helps</span>
Ok, so you automatically know that you are subtracting 6 from 10 to get 4. So, in order to figure out how it is 1/3 of that number, it is going to be multiplied by 3, getting 18. So, the number would be 18.
