Since the properties of a rhombus tells us that both pairs of opposite sides are congruent we can therefore conclude that DB will be 12
        
             
        
        
        
Answer: 
Step-by-step explanation:

Add  on both sides and subtract
 on both sides and subtract  on both sides to leave x's on the left side and independent values on the right.
 on both sides to leave x's on the left side and independent values on the right.


Solve the fractions.





Convert the mixed fraction  to an improper fraction. You can do this by multiplying 1 times 35 and adding 2.
 to an improper fraction. You can do this by multiplying 1 times 35 and adding 2.

Now use the reciprocal (inverse fraction) and multiply on both sides to isolate x.




 
        
             
        
        
        
Answer:
153 units squared
Step-by-step explanation:
To solve, multiply your length by your width.

 
        
                    
             
        
        
        
Answer:
coefficent matrix
Step-by-step explanation:
P. 366
"If the column of constant terms is not included, the matrix reduces to that of the coefficent matrix of the system"
-1 -3 -1
9 -9 -1
-1 -3 4
 
        
                    
             
        
        
        
Answer:
a
d
A
c
c
Step-by-step explanation: