Answer:
Sorry im not good at diameters
Step-by-step explanation:
hopefully  this helps. since its divided by 2 x would be 4 and y would be 2.5
 
        
                    
             
        
        
        
Answer: sorry the answer is not clear.
Step-by-step explanation:
 
        
             
        
        
        
Well you can just keep adding 55 =1hr until you get to 400 the same with 45
        
             
        
        
        
Answer: C. 12.5
Step-by-step explanation:
Given : A manufacturer of new light bulbs claims the average lifetime of its long-life bulb is more than 4000 hours.
Population mean :  
Sample size : n= 100
Sample mean : 
Standard deviation: 
The value of test-statistic is given by :-

Hence, the value of the test statistic for this problem is 12.5.
 
        
             
        
        
        
Answer:
Yes the triangles are congurant.
Step-by-step explanation:
Because if you can see up and down triangles this means they are congurent.