Step-by-step explanation:
 1. divide .5 from 100 and you will end up with 200.
2. multiply 200 by 8 giving you the answer 1600
 
to make sure the answer is correct you multiply the .5 percent by 1600 leaving you with 8 
 
        
             
        
        
        
Answer:
3 to 5
Step-by-step explanation:
To find the number of boys, take the total students and subtract the girls
72 -45 =27
We want the ratio of boys:girls
 boys:girls
27:45
Divide each number by 9
27/9:45/9
3    : 5
 
        
             
        
        
        
Answer:
x+11
Step-by-step explanation:
here is the equation 
 
        
             
        
        
        
Answer:



Step-by-step explanation:
Vertical Angles are congruent, so set the two expressions equal to each other:
[x + 30]° = [3x - 18]°
-[3x]°      - [3x]°
___________
−18° = 30° - [2x]°
- 30° - 30°
____________
−48° = [−2x]°
____ ___
 −2° −2°
 [Plug this back into both expressions to get both <em>m</em>∠<em>N</em> and <em>m</em>∠<em>M</em> at 54°.]
 [Plug this back into both expressions to get both <em>m</em>∠<em>N</em> and <em>m</em>∠<em>M</em> at 54°.]
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