Find 1 1/4 on the number line and count back 3/4 (why it is negative) answer is 1/2.
        
                    
             
        
        
        
Is there a graph? not sure what to solve.
        
             
        
        
        
4x - 5y = 24
4(6) - 5(0) = 24
24 - 0 = 24
24 = 24 (correct)....so (6,0) is a solution
4(1) - 5(-4) = 24
4 + 20 = 24
24 = 24 (correct)...and (1,-4) is a solution
        
                    
             
        
        
        
Answer:
(C) 18
Step-by-step explanation:
We can create a systems of equations. Assuming  is Michelle's age,
 is Michelle's age,  is Joan's age, and
 is Joan's age, and  is Ryan's age, the equations are:
 is Ryan's age, the equations are:



We can use substitution, since we know the "values" of m and j.


So we know that Joan is 18 years old.
Hope this helped!
 
        
             
        
        
        
Cos 90° = 1
Step-by-step explanation:
Cos 90° = 1, Because The angles are complements