Answer:the z score is - 1
Step-by-step explanation:
Assuming a normal distribution for the delivery time of sandwiches by Sammy's Sandwich Shop. We would apply the formula for normal distribution which is expressed as
z = (x - u)/s
Where
x = delivery times
u = mean delivery time
s = standard deviation
From the information given,
u = 25 minutes
s = 2 minutes
We want to determine the z-score for the number of sandwiches delivered in less than 23 minutes. It becomes
z = (23 - 25)/2 = - 1
 
        
             
        
        
        
I think the problem is
2X+20=400 
You just have to answer I think X and X equals that two numbers I’m not 100% sure but I’m trying to help
        
             
        
        
        
Answer:
1.6022x 10-19
Step-by-step explanation:
1.6022x 10-19 then simplifies into 16.022 because of the 10, and then the final answer is -2.978
 
        
                    
             
        
        
        
Answer:  
<u>Step-by-step explanation:</u>
To eliminate the exponent, apply log to both sides.  This allows the exponent to become the coefficient, which can then be divided from both sides.
