We have a three unknown, 4 equation homogeneous system.  These always have at least (0,0,0) as a solution.  Let's write the equations, one column at a time.
1a + 0b + 0c = 0
-1a + 1b +0c = 0
0a - 1b + c = 0
0a + 0b + -1 c = 0
We could do row reduction but these are easy enough not to bother.
Equation 1 says
a = 0
Equation 4 says
c = 0
Substituting in the two remaining,
-1(0) + 1b + 0c = 0
b = 0
0(0) - 1b + 0 = 0
b = 0 
The only 3-tuple satisfying the vector equation is (a,b,c)=(0,0,0)
 
        
             
        
        
        
<span>25,915 points/ 71 shirts= 365 points per shirt
</span><span>33,580 points/365= 92 shirts</span>
        
             
        
        
        
Answer:
what are the values of X?
 
        
             
        
        
        
She wrote a 4 instead of a 3.
There are only 3 numbers that are greater than 7. They are 8, 9, and 10. Mariah must have include 7 in her list. That is how she got 4 instead of 3.
        
                    
             
        
        
        
Answer:
No.
Step-by-step explanation:
All numbers that are able to be represented as fractions with whole numbers are rational.