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 8.1×107 8.1 times 10 superscript 7 baseline 9.1×1014 9.1 times 10 superscript 14 baseline 9.1×107

Answer 1

To add \( 7.3 \times 10^7 + 1.8 \times 10^7 \), you can combine the coefficients (the numbers in front) since they have the same exponent of \( 10^7 \).

\[ 7.3 + 1.8 = 9.1 \]

So, the sum is:

\[ 9.1 \times 10^7 \]

The correct answer is \( 9.1 \times 10^7 \).