Answer:
AC^2=AD^2+CD^2= 3^2+3= 12
AC= 
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Answer:what is the question ?
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3.1   ,   3.4   ,  11 would be your answer's
        
             
        
        
        
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Yes, because the bike order meets the restrictions of 4c + 6a ≤ 120 and 4c + 4a ≤ 100.