Answer:
   2.5
Step-by-step explanation:
Put the values in place of the corresponding variables and do the arithmetic:
   ab - 0.5b = (1)(5) -0.5(5) = 5 - 2.5 = 2.5
 
        
             
        
        
        
Set up proportion  170/180=x/1  than cross multiply  170x=180 divide both sides by 170   answer 0.944  so 94% remains
        
             
        
        
        
500,000 round up from 491,852 to 500,000
 
        
                    
             
        
        
        
<span>When to use the law of sines formula. You should use the law of sines when you know 2 sides and an angle and you want to find the measure of an angle opposite a known side. Or when you know 2 angles and 1 side and want to get the side opposite a known angle.</span>