Answer:
-44
Step-by-step explanation:
 
        
                    
             
        
        
        
Answer:
The value is  
  
Step-by-step explanation:
From the question we are told that 
     The sample mean is  
     The sample size is  n =  25 
     The standard deviation is  
Given that the sample size is not large enough i.e  n<  30  we will make use of the student t distribution table  
From the question we are told the confidence level is  99.7% , hence the level of significance is    
        
=>    
Generally the degree of freedom is  
=>  
=>   
  
Generally from the student t distribution table the critical value  of   at a degree of freedom of
 at a degree of freedom of  is
   is  
     
Generally the margin of error is mathematically represented as  
        
=>      
=>      
Gnerally the  upper control chart limit  for 99.7% confidence is mathematically represented as 
          
=>       
  
=>       
  
      
 
        
             
        
        
        
 
Curved surface area of a sphere =1256 cm 
2
 
We know that, Curved surface area of a spehre =4πr 
2
 
⟹1256=4×3.14×r 
2
 
⟹r 
2
 = 
4×3.14
1256
 
⟹r 
2
 =100
∴r=10 cm
Hence, the answer is 10 cm.
 
4186.66666666 volume of sphere
 
        
                    
             
        
        
        
okay realize that the distance traveled by the small plane, distance traveled by jet, and the distance between them makes a right triangle. Using Pythagorean theorem and allowing x be the distance between them, x² = (20 miles)² + (64.5 miles
 x = 67.53 miles the distance between the two entities in nearest tenth is approximately 67.5 miles.