Answer:
0.3209
in case you dont know  A z-score tells you if the distribution it comes from is normal.
Step-by-step explanation:
 
        
             
        
        
        
Hellloooooooodoodordododododod
        
             
        
        
        
Answer:
M=2
Step-by-step explanation:
 
        
             
        
        
        
Answer:
Y=×^2-9
Step-by-step explanation:
(X+0)^2-9
Use the vertex form, y=a(x-h)^2+k
a=1
h=0
k=-9
And because the parabola opens up the vertex is (0,-9)
The distance from the vertex to a focus of the parabola by using the __ 1/4a__ formula:
1/4(1)
1/4 
(h,k+p)
(0,-35/4)
 
        
             
        
        
        
Set up a ratio 3 3/4 = 15/4 and 1 1/2 = 3/2 so          
((15/4miles)  / (3/2hours)) = xmiles/4hours  solve for x
so x = 4hours*((15/4miles)/(3/2hours)) = x miles
the hours cancel and you are left with x miles = 10miles