which is the sum of 3.15 x 10 to the 7th power + 9.3 * 10 to the 6 power write your answer in scientific notation

The sum of both numbers is 4.08 * 10^7

Step-by-step explanation:

The sum of 3.15 * 10^7 and 9.3 * 10^6.

There is the need to write this out in their full form, that is;

31,500,000 + 9,300,000 = 40,800,000

This answer can then be converted to the scientific notation of;

4.08 * 10^7

Another way to do this is to make the power side of the two given scientific notations to have the same power, preferably the higher power.

3.15 * 10^7 = 3.15 * 10^7

9.3 * 10^6 = 0.93 * 10^7

We can then add this together since the power term (10^7) is the same as (3.15 + 0.93) * 10^7 = 4.08 * 10^7

3.15 x 10^7 + 9.3 x 10^6 = 4.43 x 10^7