1. Subtract 4.66 x 10^-5 - 7.34 x 10^-7

Question

A. -2.68 x 10^2
B. 2.68 x 10^2
C. 4.5866 x 10^-5
D. -4.5866 x 10^-5

Answer 1

To subtract these numbers, we need to make sure that the exponents of the numbers are the same. We can do this by multiplying both numbers by 10^7:

(4.66 x 10^-5) x (10^7) = 4.66 x 10^(-5+7) = 4.66 x 10^2
(7.34 x 10^-7) x (10^7) = 7.34 x 10^(-7+7) = 7.34 x 10^0 = 7.34

Now we can subtract:

4.66 x 10^2 - 7.34 = 457.66

Therefore, the correct option is:

A. -2.68 x 10^2