Add 7.3×107+1.8×107 . Which is the correct sum?(1 point)
Responses
8.1×107
8.1 times 10 superscript 7 baseline
9.1+107
9.1 plus 10 superscript 7 baseline
9.1×107
9.1 times 10 superscript 7 baseline
9.1×1014
None of the given options are the correct sum.
The correct sum of 7.3×107+1.8×107 is 9.1×107.
To solve this problem, you need to add the two numbers: 7.3×10^7 and 1.8×10^7.
Step 1: Add the coefficients: 7.3 + 1.8 = 9.1
Step 2: Keep the base (10) the same: 10^7
Step 3: Put it all together: 9.1 × 10^7
The correct answer is 9.1 × 10^7.
To add 7.3×10^7 and 1.8×10^7, we first need to make sure that the exponents are the same. Both numbers are written in scientific notation, so we can add them directly:
7.3×10^7 + 1.8×10^7 = (7.3 + 1.8) × 10^7
Calculating the sum of the coefficients, we have:
7.3 + 1.8 = 9.1
Therefore, the correct sum is 9.1×10^7.