Answer:
There are no specified Numbers provided
Step-by-step explanation:
 
        
             
        
        
        
A^2 + 16^2 = 20^2
(Third one)
        
             
        
        
        
Answer:
Yes, it simplifies to 1/6. 
Step-by-step explanation:
Both the top (numerator) and bottom (denominator) can be both divided by 3.  3 divided by 3 is 1. 18 divided by 3 is 6.
 
        
                    
             
        
        
        
Answer:
   0 boxes minimum
Step-by-step explanation:
The mass of the truck and paper must satisfy ...
   22.5b + 2948.35 ≤ 4700 . . . . total truck mass cannot exceed bridge limits
   22.5b ≤ 1751.65
   b ≤ 77.85
The driver can take a minimum of 0 boxes and a maximum of 77 boxes of paper over the bridge.
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The question asks for the <em>minimum</em>. We usually expect such a question to ask for the <em>maximum</em>.