Answer:
<h2>
67.7</h2><h2 />
Step-by-step explanation:
perimeter = semicircle (x2) + parallelogram side (x2)
                 = 1/2 π 12 (x2) + 15 (x2)
                = 37.7 + 30
                = 67.7
 
        
             
        
        
        
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Answer:
Stesksp-by-step explanation:
 
        
             
        
        
        
The -1 affects the coefficient of the entire term.
Without the -1,
the term has a positive coefficient.
(3a)² = 9a²
However, with the -1,
the term has a negative coefficient.
-(3a)² = -9a²
        
                    
             
        
        
        
Answer:
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