<span>prove: the segment joining the midpoints of the two sides of a triangle is parallel to the third side. the coordinates are A(0,0)B(a,0)on the the x axis, and C(c,d), M</span>
        
                    
             
        
        
        
Answer:
The correct answer is Never
 
        
             
        
        
        
Rational numbers are closed under addition ,multiplication but not closed under division 
Rational number 
Closure property
assume two rational numbers say x and y. the results  of addition and multiplication operations give a rational number we can say that rational number are closed under addition and multiplication . For example
rational number are not closed under division as  1 and 0 are rational number  but 1/0 is not defined but it is closed under addition  and multiplication
that is 1+0 = 1 closed under addition 
           1*0 =0 closed under multiplication
but 1/0  is not defined so it is not closed under division
Hence Rational numbers are closed under addition ,multiplication but not closed under division 
learn more of closure property here
 brainly.com/question/28220649
#SPJ4
 
        
             
        
        
        
X=1, Y=-2. Heres your answer. It should be C
        
                    
             
        
        
        
In order from first pic to last:
10
2
30
70
8
99
1
11
Add 2, divide by 3
-3