Please can someone show me how to do this. Thanks
       
      
                
     
    
    
    
    
    1 answer:
            
              
              
                
                
Answer:
x equals 3.00cm
Step-by-step explanation:
Use Pythagoras' Theorem. 
a = (14x-45)
b = (16x+27)
c = (25x)
Plug in the variables above into Pythagoras' Theorem that is, a^2+b^2=c^2.
Solve the resulting quadratic equation and reject the negative answer as length is always positive. 
 
                                
             
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Answer:
2x+3+5x+6 = 7x+9
Step-by-step explanation:
2x + 3 + 5x + 6
= 2x + 5x + 3 + 6
= 7x + 9
Hope it helps