Answer: 3z^2 + 3z +2
Hope this helps : )
        
             
        
        
        
The graph shows the solution to be (x, y) = (-1, 3).
 
        
        
        
Answer:
Short leg = 6.
Step-by-step explanation:
Hypotenuse = 2x
short leg = x
long leg = x√3
Hypotenuse = 2x=12
x = 12/2
x=6
short leg = x = 6
 
        
             
        
        
        
By The wording and vocabulary
        
             
        
        
        
ANSWER
The correct answer is D.

EXPLANATION
The given expression is

The symbol means summation.
So we need to substitute 

into the formula and add all to get,

We simplify to obtain,

The correct answer is D