He means that 5.08 cm is a possible coordinate, and 50.8 mm is a possible coordinate 
:)
        
             
        
        
        
Answer:
8800
Step-by-step explanation:
 
        
             
        
        
        
Z score=(data value-mean)/standard deviation
z=(90-100)/15=-0.6666666667
        
             
        
        
        
Answer:
reflection 
Step-by-step explanation:
mirror= reflection
 
        
             
        
        
        
Answer:
D.	They have the same y-intercep
Step-by-step explanation:
Before the comparison will be efficient, let's determine the equation of the two points and the x intercept .
 (–2, –9) and (4, 6)
Gradient= (6--9)/(4--2)
Gradient= (6+9)/(4+2)
Gradient= 15/6
Gradient= 5/2
Choosing (–2, –9)
The equation of the line 
(Y+9)= 5/2(x+2)
2(y+9)= 5(x+2)
2y +18 = 5x +10
2y =5x -8
Y= 5/2x -4
Choosing (4, 6)
The equation of line
(Y-6)= 5/2(x-4)
2(y-6) = 5(x-4)
2y -12 = 5x -20
2y = 5x-8
Y= 5/2x -4
From the above solution it's clear that the only thing the both equation have in common to the given equation is -4 which is the y intercept