To add 7.3 x 10^7 and 1.8 x 10^7, we need to make sure the exponents are the same.
We can rewrite 1.8 x 10^7 as 0.18 x 10^8 (since 10^8 is the same as multiplying by 10).
Now we can add:
7.3 x 10^7 + 0.18 x 10^8 = (7.3 + 0.18) x 10^7
Simplifying the sum:
7.3 + 0.18 = 7.48
Therefore, the answer is 7.48 x 10^7.
Add 7.3 x 10^7 + 1.8 x 10^7
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