1. given
2. addition property of equality
3. division property of equality
        
             
        
        
        
Answer:
The z-score for this kernel is -2.3
Step-by-step explanation:
* Lets revise how to find the z-score
- The rule the z-score is z = (x - μ)/σ , where
# x is the score
# μ is the mean
# σ is the standard deviation
* Lets solve the problem
- The popping-times of the kernels in a certain brand of microwave 
   popcorn are  normally distributed
- The mean is 150 seconds
- The standard deviation is 10 seconds
- The first kernel pops is 127 seconds
- We want to find the z-score for this kernel
∵ z-score = (x - μ)/σ
∵ x = 127 
∵ μ = 150
∵ σ = 10
∴ z-score = (127 - 150)/10 = -23/10 = -2.3
* The z-score for this kernel is -2.3
 
        
                    
             
        
        
        
Answer:
Her got 60 pounds from North America
Step-by-step explanation:
 
        
             
        
        
        
I need a question or a problem to solve??
        
             
        
        
        
Answer:
5.0
Step-by-step explanation:
0.16÷0.03220=4.9689
 =5.0