Question

1.8×10^-2-3.9×10^-3 what is the answer

Answer 1

1.8×10^-2 = 0.018

3.9×10^-3 = 0.0039

So

1.8×10^-2-3.9×10^-3

= 0.018 - 0.0039

= -0.0141

Answer in scientific form notation:

= -1.41 *10^-2

Answer 2

The answer is 0.0141