Solve for n by simplifying both sides of the equation, then isolating the variable 
n=9
        
                    
             
        
        
        
Answer:
- The quadrilateral is a rectangle
 
 
Step-by-step explanation:
Given,

Now,




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Answer:
38 %  
Step-by-step explanation:
1. Percent of lawns mowed

2. Percent of lawns unmowed
% Unmowed = 100 % - 62 % = 38 %
Henry still needs to mow 38 % of the lawns.
 
        
             
        
        
        
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