Answer:
The speed of the boat in still water = 8 Km/hr
Step-by-step explanation:
Let the speed of the boat be x
According to question 
(x-4)15 = (x+4)5
3x-12 = x+4
⇒x = 8 km/hr
 
        
             
        
        
        
Answer:
SAS Similarity
Step-by-step explanation:
given by lines 1, 2, & 3
 
        
             
        
        
        
Answer:
x=75
Step-by-step explanation:
 
        
                    
             
        
        
        
Answer:
It is 1/1536
Step-by-step explanation:
You divide 1/512 by three since it is a cube.
 
        
             
        
        
        
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