The answer to the question
 
        
        
        
The flashlight cost 7 dollars and the batter is 2 dollars
        
                    
             
        
        
        
1/2 x s, where s equals 3/10 means,
(1/2) x (3/10) which will give (3/20)
You simply multiply the numerators to get 3 and the denominators to get 20.
        
             
        
        
        
Area of a triangle is... 1/2 Base x Height The answer is followed by units squared. 
3.15 is half of 6.3. 
3.15 x 3.4 = 10.71 yds squared
        
             
        
        
        
Answer:
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Step-by-step explanation: