calculate 4.8 x 10^-3 - 9.4 x 10-6 . Express the answer in scientific notation rounding to 2 decimal places.

Answer 1

4.8 x 10^-3 - 9.4 x 10^-6 can be rewritten as 4.8 x 10^-3 - 0.0094 x 10^-3.

Combining like terms, we get 4.8 x 10^-3 - 0.0094 x 10^-3 = (4.8 - 0.0094) x 10^-3 = 4.7906 x 10^-3.

Rounding to 2 decimal places, the answer in scientific notation is 4.79 x 10^-3.