Add 7.3×107+1.8×107 . Which is the correct sum?(1 point)
is it 9.1x10^14
No, the correct sum is 9.1×10^7.
To add 7.3×107 and 1.8×107, you need to first add the numbers without the exponents and then adjust the sum using scientific notation.
Adding the numbers without the exponents:
7.3×107 + 1.8×107 = 9.1×107
Now, let's adjust the sum using scientific notation:
9.1×107 can be written as 9.1 × 10^7
Therefore, the correct sum is 9.1 × 10^7.
To add the two numbers 7.3×10^7 and 1.8×10^7, you need to add the coefficients (7.3 and 1.8) and keep the same exponent (7).
So, the sum would be:
7.3×10^7 + 1.8×10^7
= (7.3 + 1.8) × 10^7
= 9.1 × 10^7
Therefore, the correct sum is 9.1 × 10^7, which is equivalent to 9.1 × 10^14.