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

Answer 1

To subtract these two numbers, we need to get them to have the same exponent.

First, let's convert them to scientific notation:

4.8 x 10^-3 = 0.0048
9.4 x 10^-6 = 0.0000094

Now we can subtract them:

0.0048 - 0.0000094 = 0.0047906

Lastly, let's express the answer in scientific notation, rounded to 2 decimal places:

0.0047906 ≈ 4.79 x 10^-3