Add 7.3×107+1.8×107 . Which is the correct sum?(1 point)
The correct sum is 9.1×107.
To add 7.3×10^7 and 1.8×10^7, we need to combine the coefficients while keeping the same exponent.
The correct sum is (7.3 + 1.8) × 10^7 = 9.1 × 10^7.
To solve this problem, you need to add the numbers 7.3x10^7 and 1.8x10^7.
Step 1: Add the coefficients, which are 7.3 and 1.8:
7.3 + 1.8 = 9.1
Step 2: Since both numbers are in scientific notation, you need to add the exponents of 10. In this case, both exponents are 7:
10^7 + 10^7 = 2x10^7
So, the correct sum is 9.1x10^7.