Question

evaluate,
10^-4    
                                 
 thanks
 
  
                                                                                                           

Answer 1

With 10 to the power to a negative number, it's easier. 
Here's a trick: The negative number is the places to the right of the decimal. The last number is a 1, while the rest are 0s.

From this, we get: $10^{-4}=\boxed{0.0001}$

Answer 2

10^4 = 10000 (four zeros at the end)
10^-4 = 0.0001 (four zeros at the front)