When you have an exponent that is negative, it means to take reciprocal of the fraction then take it the power.
Some examples:
5^-2 = 1/5^2 = 1/25
10^-3 = 1/10^-3 = 1/1000
If this answer wasn't clear enough, just comment below or DM me a message!
        
                    
             
        
        
        
Answer:
-6/7p+1/7
Step-by-step explanation:
 
        
             
        
        
        
Answer:
   6.0 miles
Step-by-step explanation:
The sequence of distances is a geometric sequence with first term a1 and common ratio (1 +10%) = 1.10. The sum of 7 terms of the sequence is ...
   S7 = a1·(r^7 -1)/(r -1)
   56.923 = a1·(1.1^7 -1)/(1.1 -1)
   5.6923 = a1·0.9487171
Dividing by the coefficient of a1 gives its value:
   5.6923/0.9487171 ≈ 5.999997 ≈ 6.000
The hiker traveled 6.0 miles on the first day.
 
        
             
        
        
        
The correct answer is quadrant. 
Quadrant is a method used to determine latitude. Chronometer is used to measure time. Astrolabe is used by navigators and astrologers. Cross-staff or Jacob's staff is used to measure angles. So the correct answer would be quadrant. I hope this helped you.