
Explanation:
Since we have given that 
The prices of three t-shirts styles  i.e $24, $30, $36 with their probability is given by 

As we know that,


Now, 

and 

So,
 
So, the expected value of a t-shirt = $31.
 
        
             
        
        
        
Yes it can be a direct variation.  it follows the form y = kx
The only variable that cannot be held constant is F, but we can hold the mass constant and vary the acceleration OR we can hold the acceleration constant and vary the mass.  Either one would work, but the easiest would be to vary the mass and hold the acceleration constant since we are all pulled by the same action gravity
        
             
        
        
        
The shape of a dice is a cube. A cube is a shape which is 3D. A cube has 6 squares  which makes it 3D. A dice has dots on them. The dots stand for numbers. Each side has a different number. They have up to 6 dots.
Hope I helped ya!!!☺☺☺
        
                    
             
        
        
        
This is a trick question. First just understand that any number over itself is 1 so 

 is just 

 so it is just 
2
 
        
        
        
If the width is 2p then the width of both sides is 4p. Subtract that from the total perimeter and you get 16p-4p= 12p. Divide that by two because there are 2 side lengths. So, one side length is 6p.