You can make 6 different towers. If red was at the bottom, there'd be two different possibilities for that: red, yellow, blue, and red, blue, yellow. Same for if blue was at the bottom: blue, red, yellow, and blue, yellow, red. Yellow also applies: yellow, red, blue, and yellow, blue, red. 3*2=6, so 6 possible towers. 
        
             
        
        
        
Answer:
28.5 cm²
Step-by-step explanation:
There are 7 whole diamonds and 5 half-diamonds.  Each diamond is worth three.
7x3=21
5/2x3=7.5
21+7.5=28.5
 
        
                    
             
        
        
        
Answer:
125%
Step-by-step explanation:
Is means equals and of means multiply
40 = P * 32  where P is in decimal form
Divide each side by 32
40/32 = P
1.25 = P
Now change to percent form ( multiply by 100)
125%
 
        
                    
             
        
        
        
1/3 or 5/6 
Lets make the fractions into decimals. To make a fraction into decimal you have to divide the numerator by the denominator. The numerator is the top part of a fraction and the denominator is the bottom part of the fraction. 
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Calculations
1/3
1 ÷ 3 =  0.3333.... 
5/6 
5 ÷ 6 = 0.83333...
0.83333... is greater then 0.3333.....
Therefore 5/6 is greater then 1/3 
1/3 is smaller then 5/6 
        
             
        
        
        
7n-84 would be your correct answer, 7 times n is 7n. 12 times 7 is 84 so therefore your answer would be 7n-84