Answer:
on #1 x=2 and y=2
Step-by-step explanation:
a squared + b squared = c squared
2 squared + 2 squared = 4 squared 
4 + 4 = 8
 
        
             
        
        
        
Answer:
For the scientists it would take 4 hours to make 1000 units
 
        
             
        
        
        
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