Answer:
The equation for regression line and predicting a husband's height for married couples in their early 20s
Equation: Y'=33.67+0.54*X'
Step-by-step explanation:
r=0.5
x'=64.5
Sx=2.5
y'=68.5
Sy=2.7
General regression line equation is:
Y'=a+b*X'
so the slope of the regression line is the linear correlation coefficient multiplied by the standard deviation for y' divided by the standard deviation for x'

The intercept with axis y is the mean of the decreased by the product of the slope and the mean of x

The equation regression line then is:
Y'=33.67+0.54*X' 
 
        
             
        
        
        

The value of  .
.

 
 
 

We know that,

 ➪ 125° +  + 30° = 180°
 + 30° = 180°
 ➪  + 155° = 180°
 + 155° = 180°
 ➪  = 180° - 155°
 = 180° - 155°
 ➪  = 25°
 = 25°
Therefore, the value of  is 25°.
 is 25°.
Now, the three angles of the triangle are 125°, 25° and 30°.

✒ 125° + 25° + 30° = 180°
✒ 180° = 180°
✒ L. H. S. = R. H. S. 


 
        
                    
             
        
        
        
Answer: Therefore it must be the first one, 40
Step-by-step explanation: Vertical angles are always congruent, which means that they are equal. x = 40
 
        
             
        
        
        
Answer:
If you are trying to find how much grams are in one color pencil it is 7 grams.