Add 7.3×107+1.8×107

Question

. 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 \( 7.3 \times 10^7 \) and \( 1.8 \times 10^7 \), you can simply add the coefficients (7.3 and 1.8) while keeping the common exponent \( 10^7 \):

\[ 7.3 + 1.8 = 9.1 \]

So,

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

The correct answer is:

9.1×10^7