Answer: 
 
Step-by-step explanation:
 
        
                    
             
        
        
        
Efficiency = (output)/(input).
This could also be written as
efficiency= output/(output+losses)
or
eff=(input-losses)/input
        
             
        
        
        
74 + 53 = 127 divided by 2 =63.5
        
             
        
        
        
Answer: 4.24264…
Step-by-step explanation:
If 18=9*2 then √18=√9*√2=3√2=3*1.4142≈4.2426
Hope this helps, now you know the answer and how to do it. HAVE A BLESSED AND WONDERFUL DAY! As well as a great rest of Black History Month! :-)  
- Cutiepatutie ☺❀❤
 
        
             
        
        
        
40, because if the ratio is 1:5 then we can times 8 by 5 to get 40 (I think :P)