Question

Add 7.3 x 10^7 + 1.8 x 10^7. Which is the correct sum? (1 point)
9.1 10^7
8.1 x 10^7
9.1 x 10¹
9.1 x 10^7

Answer 1

To add \(7.3 \times 10^7\) and \(1.8 \times 10^7\), you can simply add the coefficients (since they have the same power of 10):

\[
7.3 + 1.8 = 9.1
\]

So, the result is:

\[
9.1 \times 10^7
\]

The correct answer is **9.1 x 10^7**.