Mathematics, 15.07.2019 16:30 mollietennis

The population of china is approximately 1.381 × 10^9, and the population of the united states is approximately 3.23 × 10^8. about how many people live in both countries combined? express your answer in scientific notation.

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The population of china is approximately 1.381 × 10^9, and the population of the united states is ap...