what is the sum of 7 x 10^10^-8 and 6 x 10^-8

(1 point)
Responses

13 x 108
1.3 x 10−7
1.3 x 10negative 7
13 x 10−16

1 answer

To find the sum of 7 x 10^10^-8 and 6 x 10^-8, you need to add the numbers and keep the same exponent.

7 x 10^10^-8 + 6 x 10^-8 = 13 x 10^-8

Therefore, the correct answer is 13 x 10^-8.