Answer:5*x>20
Step-by-step explanation: i think it is askinng to find x by comparing grater than less than
 
        
             
        
        
        
I'm not sure if this dividing,multiplying,subtracting or adding but for adding i got 6 as my answer.I don't know if this the correct answer but its better than having no answer right?
 
        
                    
             
        
        
        
Answer:
4 cm
Step-by-step explanation:
Perimeter = 18cm
θ = 2.5 radian 
s = rθ, s = Arc length 
Perimeter of Sector, P = arc length, s + 2r 
Perimeter = rθ + 2r 
r = Radius 
18cm = r(2.5) + 2r 
18cm = 2.5r + 2r 
18cm = 4.5r 
r = 18 /4.5
r = 4
 
        
             
        
        
        
So the ratio of boys to girls is 12:24.. now, is that an equivalent ratio as 2 boys for 4 girls? or 2:4?  let's see.

you could start simplifying the 12/24 fraction by dividing by some common multiple, say 2, and get 6/12, then divide by 3 and get 2/4  and stop there.
then you'll notice that 12/24 is really 2/4 in disguise.