According to the empirical rule, roughly 68% of the scores fall between z = -1 and z = 1 
You can use a calculator to get a more approximate answer. If you have a TI calculator, you can use the "normalcdf" function to type in normalcdf(-1,1)
        
             
        
        
        
Answer:
 6 x 4 x 4 Hope I get u right<3
Step-by-step explanation:
 
        
             
        
        
        
Answer:
y-coordinate = 0
Step-by-step explanation:
Consider the below diagram attached with this question.
Section formula:
If a point divides a line segment in m:n whose end points are  and
 and  , then the coordinates of that point are
, then the coordinates of that point are

From the below graph it is clear that the coordinates of end points are J(1,-10) and K(7,2). A point divides the line JK is 5:1.
Using section formula, the coordinates of that point are




Therefore, the y-coordinate of the point that divides the directed line segment from J to k into a ratio of 5:1 is 0.
 
        
                    
             
        
        
        
9y  = 6x + 54
divide through by 9:-
y = 6/9y + 54/9
y = 2/3 x  + 6 <---- answer