At= -5(1/2)
at= -2.5
v= u + at
v= 2 + (-2.5)
v= -0.5
        
                    
             
        
        
        
180=2x+y
180-y=2x
(180-y)/2=x
        
             
        
        
        
<h2>
Answer with explanation:</h2>
The confidence interval for population mean is given by :-
 (1)
                   (1)
, where  = sample mean
 = sample mean 
z* = critical value.
SE = standard error
and  ,
 ,  = population standard deviation.
 = population standard deviation.
n= sample size.
As per given , we have


n= 15
It is known that ring diameter is normally distributed.
 
 
By z-table ,
The critical value for 95% confidence  = z*= 1.96
A 99% two-sided confidence interval on the true mean piston diameter :
 (using (1))
     (using (1))

 [Rounded to three decimal places]
  [Rounded to three decimal places]
∴  A 99% two-sided confidence interval on the true mean piston diameter  = (74.020, 74.022)
By z-table ,
The critical value for 95% confidence  = z*= 1.96
A 95% lower confidence bound on the true mean piston diameter:
  (using (1))
    (using (1))
 [Rounded to three decimal places]
 [Rounded to three decimal places]
∴  A 95% lower confidence bound on the true mean piston diameter= 74.020
 
        
        
        
Answer:
126 sq. meters
Step-by-step explanation:
A = lw
= 9(14)
= 126 sq. meter
 
        
             
        
        
        
Answer:
There would be 19 ballons left
Step-by-step explanation: