You need to equate the two expressions to get the value of x. That is 3x - 5 = x + 3 and solve for x, you will get x = 4. Then get the length of line ZB and line BA by substituting the value of x you've got; hence line ZB = 3(4) - 5 = 7 and line BA = 4 + 3 = 7. Add the two lines to form a single line ZA, that is 7 + 7 = 14. So the answer is D.14
        
                    
             
        
        
        
Usually the median is defined by the middle number, so without any doubts I can say that due to the fact that half of population has zero effect the overall index is zero. Hope it is clear that the last ( D.The median debt is zero because more than half of credit card debts are zero.) option is the only correct answer whereas the others ones are wrong.
        
             
        
        
        
Answer: Y= 2 X=1
Step-by-step explanation:
2x+y=4                  4x+2y=8
2x     =/2                     2y= /2
y=2                          4x=4
                                /4= /4
                                X= 1
 
        
                    
             
        
        
        
To estimate you would round the numbers, so it would be 7,000 - 4,000 = 3,000. 
        
             
        
        
        
Answer:
if there are 360 students, the number of teacher will be 6,480...
360:6,480