Answer:
x = 4
Step-by-step explanation:
8/72 = x/36
crossmultiply 
8 x 36 = X x 72
288 = 72x
divide both sides by 72
288/72 = x
therefore , x = 4
 
        
                    
             
        
        
        
That would be 3.5 b/c it can’t be expressed as a ratio or a simple fraction
        
                    
             
        
        
        
Answer:  0.701
Step-by-step explanation:
Formula :  
 , where 
 significance level , 
 Population standard deviation, n= sample size.
As per given,  n= 22
 
Critical z- value for 90% confidence level : 
Then,
  
Hence ,  error bound (EBM) of the confidence interval with a 90% confidence level= ± 0.701
 
        
             
        
        
        
Angles in a triangle adds up to 180
All you do it 59+69 which is 128
Then you do 180-128 the answer is 52