What is the sum of seven times 10 to the negative 8th power and 6 * 10 ^ -8

To find the sum of the two numbers, you add them together.

Seven times 10 to the negative 8th power is 7 * 10^-8.

Similarly, 6 times 10 to the negative 8th power is 6 * 10^-8.

Adding these two numbers together, you get:

7 * 10^-8 + 6 * 10^-8 = (7 + 6) * 10^-8 = 13 * 10^-8.

So, the sum is 13 times 10 to the negative 8th power.