Answer:
 - 3x + 1
Step-by-step explanation:
 
        
                    
             
        
        
        
Answer:
14
Step-by-step explanation:
Hypotenuse^2=base^2+perp^2
50^2=base^2+48^2
2500-2304=base^2
Base^2=196
Taking sq root
Base=14
 
        
             
        
        
        
Answer: 
(a) see attachment
(b) E(x) = 226/105
Step-by-step explanation: see attachment