Answer:
Strong positive correlation
Step-by-step explanation:
The closer the value of ρ is to +1, the stronger the linear relationship. For example, suppose the value of oil prices are directly related to the prices of airplane tickets, with a correlation coefficient of +0.8. 
 
        
             
        
        
        
Answer:
Step-by-step explanation: add the equations
2x² = 30 
x² = 15
y² = 12 - 15
     = -3
x4 -y4 = 15² - (-3)²
            = 216
 
        
             
        
        
        
I is C because you use the pythag theorem
        
             
        
        
        
Answer:
Step-by-step explanation:
If u = 6 then substitute so
6(6+6)=6 know solve but this isn't going to be correct because 6 plus 6 is 12 times 6 isn't 3
So your answer isn't correct. I think it would be a negative number or decimal because 6 is larger than 3. Hope this helps!
it is u(u+6)=3
I got u=6