Answer:
The ratio of the intensities is roughly 6:1.   
Step-by-step explanation: 
The intensity I() of an earthquake wave is given by:
 
 
<em>where P: is the power ans d: is the distance. </em>
Hence, the ratio of the intensities of an earthquake wave passing through the Earth and detected at two points 19 km and 46 km from the source is:

<em>where I₁ = P/4πd₁², d₁=19 km, I₁ = P/4πd₂² and d₂=46 km     </em>
 
 
 
 

Therefore, the ratio of the intensities is roughly 6:1.   
  
I hope it helps you!    
 
        
             
        
        
        
Answer:
<    No
Step-by-step explanation:
 
        
                    
             
        
        
        
$810 because if you use the simple interest formula (s=p*r*t), you get $810 hope this helped!
        
             
        
        
        
Answer:
See attached
Step-by-step explanation:
The proof is attached