B.)  because according to the identity property of addition, any number added to zero will remain the same.  
        
                    
             
        
        
        
The two numbers are (7+ sqrt(65))/2 and (7- sqrt(65))/2
(7+ sqrt(65))/2+ (7- sqrt(65))/2= 7
(7+ sqrt(65))/2* (7- sqrt(65))/2)= -4.
Hope this helps~
        
             
        
        
        
Answer:
Population is 34000 students
Sample is 770 students 
Step-by-step explanation:
Population :In statistics, a population is the entire pool from which a statistical sample is drawn.
Sample: A sample refers to a set of observations drawn from a population. 
We are given that 34,000 students attended the university.
Out of which a random sample of 370 male students and 400 female students was selected
So, Total students selected = 370+400=770
So, Population is 34000 students
Sample is 770 students 
So, Option C is true.
 
        
             
        
        
        
X - 8 = 23
x = 23 + 8
x = 31 <== originally on their 31 yard line
        
             
        
        
        
AAS because there’s a vertical angle