Subtract 4.66 × 10^−5 −7.34 × 10^−7
A: -2.68 X 10^2
B: -4.5866 X 10^-5
C: 4.5866 X 10^-5
D: 2.68 X 10^2
To subtract the given scientific notations, we need to first make sure that the exponents are the same. Since both numbers have negative exponents, we will rewrite them in a common format:
4.66 × 10^-5 - 7.34 × 10^-7
Next, we can subtract the numbers before the multiplication sign:
4.66 - 7.34 = -2.68
Finally, we keep the common exponent and write the final answer in scientific notation:
-2.68 × 10^-5
The correct answer is option B: -4.5866 × 10^-5.