This is a normal distribution with a Mean: 14 g/dL and a Standard deviation: 1 g/dL.
    A ) Hemoglobin levels less than 13:
    13 = 14 - 1 = Mean - 1 SD
    0.16  x 200 = 32
    Answer:  32 people.
    B ) Hemoglobin levels greater than 14 :
     0.50  x 200 = 100
     Answer:  100 people. 
        
             
        
        
        
4x-7=29 < do you understand how to set that up? Now, the goal is to “get x by itself.”
4x-7=29< now add the 7 to the 29. When you cross an equals sign you change the (+/-) sign of the number you’re moving. 
4x= 36< now you will just divide by 4 on both sides. This will give you x by itself on the left side of the equals sign.
x=36/4 which is 9
X=9 :))
        
                    
             
        
        
        
Answer:
Step-by-step explanation:
part one:
133-15= x
x= the amount of friends=118
part two:
118 divided by 29.50.
Easton took 3 friends with him to the concert.
 
        
                    
             
        
        
        
Step-by-step explanation:



Equating,




Placing it,



 
        
             
        
        
        
Answer:
. (5,20)
Step-by-step (x,y)=(5,20)