Answer:
18 hours
Step-by-step explanation:
9.99+x1.5=36.99
x=18
18*1.5=27
9.99+27=36.99
 
        
                    
             
        
        
        
The random sample of the students is an illustration of sampling
The chi-square test for goodness of fit is inappropriate because the variable under study is not categorical.
<h3>How to determine the reason chi square is not appropriate?</h3>
The dataset is given as:
Monday        34
 Tuesday       29
Wednesday   32
Thursday        28
Friday             19
The variable of the above dataset is a not a categorical dataset.
One of the conditions of the chi-square test for goodness of fit test is that the variable under study must be categorical.
Hence, the chi-square test for goodness of fit is inappropriate because the variable under study is not categorical.
Read more about chi-square test at:
brainly.com/question/19959558
 
        
             
        
        
        
Answer:
3.25
Step-by-step explanation:
 
        
             
        
        
        
I think it’s 104,974
Because PEMDAS,
so first deal with exponents and 3 to the fourth power is 81. 6 to the fourth power is 1,296. 
Next in PEMDAS is multiplication and division, so 1,296 times 81 is 104,976. Then 4 divided by 2 is 2. 
Finally comes subtraction, 104,976 minus 2 = 104,974 
        
                    
             
        
        
        
Answer:
a -2b
Step-by-step explanation:
2(a+2b)-a-2b
Distribute
2a+4b -a-2b
Combine like terms
a -2b