Add 7.3×107+1.8×107 . Which is the correct sum?(1 point)

Responses

9.1+107
9.1 plus 10 superscript 7 baseline

9.1×107
9.1 times 10 superscript 7 baseline

8.1×107
8.1 times 10 superscript 7 baseline

9.1×1014
9.1 times 10 superscript 14 baseline
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1 answer

To add \( 7.3 \times 10^7 + 1.8 \times 10^7 \), you can factor out the common \( 10^7 \):

\[ (7.3 + 1.8) \times 10^7 = 9.1 \times 10^7 \]

So the correct sum is:

9.1×10^7 (or 9.1 times 10 superscript 7 baseline).

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