Answer:
percent (%) of ancient prehistoric thinner than 3 is 0.0013
Step-by-step explanation:
Given data 
mean =  5.1 millimeters (mm)
standard deviation = 0.7 mm
to find out 
percent (%) of ancient prehistoric thinner than 3
solution
we have given mean and SD 
so Z will be = x -mean  / SD
Z = ( x - 5.1 ) / 0.7
so P( x < 3 ) = P ( (x - 5.1 ) / 0.7  <  ( 3 - 5.1 ) / 0.7 ) 
 P( Z  = ( 3 - 5.1 ) / 1.5 ) 
 P( Z  =  -3 ) = 0.0013
percent (%) of ancient prehistoric thinner than 3 is 0.0013
 
        
             
        
        
        
Since the amount of money earned is based of of the amount of pies he sells...
y = 14x 
Hope this helps!
        
                    
             
        
        
        
Answer:
 146 whistles
Step-by-step explanation:
First, convert 122 feet to inches, by multiplying it by 12
122(12)
= 1464
Divide this by 10 to find how many whistles he can make
1464/10
= 146.4
Since we can only have a whole number of whistles, we have to round down to 146.
So, he can make 146 whistles
 
        
             
        
        
        
Answer:
Z=53p/d-84/d
Step-by-step explanation:
hope it help's