Write a proportion and solve for x ....
12 / x = 4 / 117
Cross multiply ...
12 * 117  =  1404
x  *  4   = 4 x
4 x = 1404
x =  351
        
             
        
        
        
<span>the answer is b. π(10^3) – π(4^3)</span><span>                                                       </span>
        
                    
             
        
        
        
Answer: 45
Step-by-step explanation:
Total number of 8th graders that signed up = 30
9 dropped out. So the total number 8th graders on board the game 
= 30 - 9 = 21
46 2/3 % of the club are 8th graders i.e 21
Let T be the total number of students in the club 
46 2/3 % T = 21
(140/3)% T = 21 
(140/300)T = 21
T = (21x300)/140 = 45
Therefore, there are 45 students on the club 
 
        
             
        
        
        
Answer: 25%
Step-by-step explanation:
184-138= 46
184*.25=46