A composite number has more than two factors.
(B) 21 is a composite number because the factors of 21 are 7 × 3.
        
             
        
        
        
1. 
60² + 30² = 4500²
Opposite corner = 67.08 ft.
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2.
6² + 8² = 100²
The wire must be 10 ft.
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3.
7² + 14² = 245²
The rope is 15.65 ft.
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4.
180² + 300² = 122400²
He ran 349.85 ft.
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I'm not too sure about question 3.
 
        
             
        
        
        
The other x-intercept is:
(1/2, 0) OR (.5, 0)
        
             
        
        
        
You can download answer here
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