Answer:
what grade us it maybe u can help you but if I cant I'm sorru
 
        
             
        
        
        
Answer:
C) There is not sufficient evidence to support the claim that the mean attendance is greater than 523.
Step-by-step explanation:
Let μ be the the average attendance at games of the football team
The claim: the average attendance at games is over 523
Null and alternative hypotheses are:
 : μ=523 : μ=523
 : μ>523 : μ>523
The conclusion is failure to reject the null hypothesis. 
This means that <em>test statistic</em> is lower than <em>critical value</em>.  Therefore it is not significant, there is no significant evidence to accept the <em>alternative</em> hypothesis. 
That is no significant evidence that the average attendance at games of the football team is greater than 523.
 
        
             
        
        
        
Answer:
Step-by-step explanation:
Rationalize the denominator of b. So, multiply the numerator and denominator by 

Now, find a +b

Combine like terms
 
Now find (a + b)²
(a +b)² = 
           
Hint: 
 
        
             
        
        
        
The answer is C 100% positive
        
             
        
        
        
When Thanos snaps he wipes out have of the universe. That doesn't mean half of every population on every single planet. That means half of the universe as a whole. This question does not have an exact answer because though its unlikely, it is possible that when Thanos snaps, nobody on Earth dies.