Answer:
Explanation:
The sum of (2.25 x 10^19) and (6.7 x 10^17) is (2.317 x 10^19).
To find the sum of these two numbers, we first need to line up the decimal points and add the numbers as we would with any other addition problem:
2.25 x 10^19
+ 6.7 x 10^17
Then, we can carry the 1 and add the numbers:
2.25 x 10^19
6.7 x 10^17
2.317 x 10^19
The sum of these two numbers is 2.317 x 10^19, which is equal to choice B.