Answer:
5.66 units
Step-by-step explanation:
A's per our discussion, x is a leg of right triangle. 
Therefore, by Pythagoras theorem:


 
        
             
        
        
        
1/x^-7
It would look more like       1
                                        ------
                                             -7 (as an exponent)
                                          x
        
             
        
        
        
Answer:−28−98i
Step-by-step explanation:
 
        
             
        
        
        
Answer:
37.5
Step-by-step explanation:
50+160=210.
210 is a 31.25% increase from 160
Multiply 120 by 1.3125 to get 157.5
subtract 120 from 157.5 to get a 37.5km increase or a 31.25% increase :)