A
This app won't let me do short answer
        
                    
             
        
        
        
Answer:
that is the solution
Step-by-step explanation:
it cannot be simplified
 
        
             
        
        
        
The answer is 72.8. in order to solve this problem, you need to use the pythagorean theorem. the equation is c^2-b^2=a^2. 
75^2-18^2=a^2
75 squared minutes 18 squared is 5301. then you need to find the square root of 5301. 
the square root of 5301 is 72.8079666, rounding to 72.8.
        
                    
             
        
        
        
Put the value of x = 6 to the eqpression 5x² + x - 7:
5(6)² + 6 - 7 = 5(36) + 6 - 7 = 180 + 6 - 7 = 179
<h3>Answer: 179</h3>