The answer would be C because he did not correct his mistakes that he had made
        
             
        
        
        
Répondre:
r <27
Explication étape par étape:
Compte tenu de l'inégalité 5r + 9> 10r - 126
Nous devons trouver l'ensemble de solutions
5r + 9> 10r - 126
Ajouter 126 des deux côtés
5r + 9 + 126> 10r - 126 + 126
5r + 135> 10r
5r-10r> -135
-5r> -135
Divisez les deux côtés par -5 (notez que le signe changera)
-5r / -6 <-135 / -5
r <27
Par conséquent, les ensembles de solutions sont des valeurs inférieures à 27
 
        
             
        
        
        
Answer:
An x-coordinate is the x value in an ordered pair, which is just two mathematical objects, such as numbers, paired together. Usually, the x-coordinate is the first number in that pair. For instance, in the ordered pair (2,5), the x-coordinate would be '2.
Step-by-step explanation:
 
        
             
        
        
        
Answer:
multiplicative inverse
Step-by-step explanation:
A number that is multiplied by it's multiplicative inverse equals one. 
A multiplicative inverse is also called a reciprocal. 
Example:
1/7 is 7's multiplicative inverse.

 
        
                    
             
        
        
        
                3            
                1
                390
              x  42
               -------
                1282
              1564
          ----------------
                       
the answer would be 16380
Hope this helped :)