Answer:

Step-by-step explanation:
ST = w + 6, 
PR = w
From the diagram given, we can deduce that PR is the midsegment of ∆QST. Therefore, according to the midsegment theorem:
PR = ½ of ST
Plug in the values into the equation and solve for w.

 (distributive property of equality)
 (distributive property of equality)
 (subtraction property of equality)
 (subtraction property of equality)
 (multiplication property of equality)
 (multiplication property of equality)

 (subtraction property of equality)
 (subtraction property of equality)

Divide both sides by -1


 
        
             
        
        
        
Answer:
i think its -0.25 
Step-by-step explanation:
i dont really ave an explanation a just used a calculator
 
        
             
        
        
        
Answer:
Positive 
Step-by-step explanation:
As height is increasing, shoe size is also increasing (positive slope)
Negative correlation is when one variable increases and the other decreases (negative slope)
 
        
                    
             
        
        
        
Answer:
41.66666
Step-by-step explanation:
 
        
                    
             
        
        
        
This system can be a bit tricky unless you write it out:
(2n + 2)(2n - 2) ~ First you have to take one variable and multiply it to each of the other two variables, like:
2n * 2n ~ And:
2n * -2 ~ This gives you:
4n^2 - 4n
Now we do this with the other:
2 * 2n
2 * -2
4n - 4
Now we combine them both while adding like terms:
4n^2 - 4
Therefore your answer is: A. 4n^2 - 4
(This is due to how when having the positive 4n subtracted by the negative it cancels it out. Leaving us with the remaining two terms left.)
I hope this helps, have a great rest of your day! ^ ^
~Ghostgate