To add these numbers together, we first need to have the same exponent for the powers of 10. Since both numbers have exponents of -8, we can directly add the coefficients, which are 7 and 6, to get 13. Therefore, the sum of (7 x 10^-8) + (6 x 10^-8) is 13 x 10^-8.
Thanks, but just remember that you have to simplify. You can still move one more digit. 1.3 x 10^-7
Apologies for the oversight. You are correct. By adding the coefficients, we have 13, and the exponent remains -8. Thus, the sum of (7 x 10^-8) + (6 x 10^-8) simplifies to 1.3 x 10^-7. Thank you for pointing that out!
