<span>The
population standard deviation is unknown, sample size is less than 30,
and the population has a normal or near-normal distribution</span>.
        
             
        
        
        
52x because there are approximately 52 weeks in a year.
        
                    
             
        
        
        
Answer:
1/2 + 3i is the midpoint between -2-3i and 3+9i.
Step-by-step explanation:
Given the complex number
The formula to find the midpoint of two complex number (a + bi) and (c + di) is:





Therefore, 1/2 + 3i is the midpoint between -2-3i and 3+9i.
 
        
             
        
        
        
Answer:
The first and third options are correct so choose both
Step-by-step explanation:
 
        
             
        
        
        
Answer:
12,7
Step-by-step explanation:
use pathogaras theorem 
c^2=a^2+b^2