The answer would be A. When using Cramer's Rule to solve a system of equations, if the determinant of the coefficient matrix equals zero and neither numerator determinant is zero, then the system has infinite solutions. It would be hard finding this answer when we use the Cramer's Rule so instead we use the Gauss Elimination. Considering the equations:
x + y = 3 and <span>2x + 2y = 6 
Determinant of the equations are </span>
<span>| 1 1 | </span>
<span>| 2 2 | = 0
</span>
the numerator determinants would be
<span>| 3 1 | . .| 1 3 | </span>
<span>| 6 2 | = | 2 6 | = 0. 
Executing Gauss Elimination, any two numbers, whose sum is 3, would satisfy the given system. F</span>or instance (3, 0), <span>(2, 1) and (4, -1). Therefore, it would have infinitely many solutions. </span>
        
             
        
        
        
Answer: The answer is D. .625
Step-by-step explanation: It terminates, meaning that it doesn't repeat itself 
 
        
             
        
        
        


multiply both sides by .4 to isolate the x variable. 

x = 1.6
 
        
                    
             
        
        
        
The angle between w and u is approximately 
        
             
        
        
        
Answer:
slope intercept form is y=mx+b
your m is 4 
all you do is plug the numbers in
y=4x+6