Answer: 17 or -18
Step-by-step explanation:
x^2+x=306
x^2+x-306=0
(x-17)(x+18)=0
x-17=0
x=17
x+18=0
x=-18
..i think this is the right answer
 
        
             
        
        
        
Answer:
The correct answer to the following question will be Option d (181 degrees of freedom).
Step-by-step explanation:
The given values are:
Regression model,
n = 200
Observations,
p = 18
Now,
⇒  
On putting the estimated values, we get
⇒  
⇒  
So that the correct choice will be "181 degrees of freedom".
 
        
             
        
        
        
Step 1. Add 72 to both sides 
5y = 7 + 5x + 72
Step 2. Simplify 7 + 5x + 72 to 5x + 79
5y = 5x + 79
Step 3. Divide both sides by 5
y = 5x + 79/5
 
        
             
        
        
        
Answer:12/7
Step-by-step explanation:
-9 2/7 -(-10 3/7)
(7x-9+2)/7+10 3/7
(7x-9+2)/7+(7x10+3)/7
-61/7+73/7
(-61+73)/7=12/7
 
        
             
        
        
        
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√5 x (10 - 4√2)
Multiply the value outside the bracket by everything inside:
10√5 - 4√10
Thus, your answer is ten square root of five minus four square root of 10
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