I'm going to use the substitution method.
4x + 4y = -16
-8x - 6y = -20
 4x + 4y = -16
 - 4x - 4x
--------------------------
 4y = -4x - 16
 ------ ------ ------
 4 4 4
y = -x - 4
-8x - 6(-x - 4) = -20
-8x + 6x + 24 = -20
 -2x + 24 = -20
 - 24 - 24
----------------------------
 -2x = 44
 ------- -------
 2 2
x = 22
4(22) + 4y = -16
 88 + 4y = -16
 - 88 - 88
------------------------
 4y = -104
 ------ ---------
 4 4
y = -26
The answer is (22, -26).
        
             
        
        
        
Answer:
Step-by-step explanation:
suppose that O has coordinates (0,0),and the points P and Q have coordinates that are whole numbers between 0 and 2, inclusive. One example of a triangle with O,P, and Q as vertices is shown below . how many such triangle are right triangle ?
 
        
             
        
        
        
Answer:
1.5808
Step-by-step explanation:
rounded
hundreds
1.58
tens
1.6
first
2
 
        
             
        
        
        
I prefer to use fractions for some irrational numbers.
For example, 1/3 is equal to an infinite 0.3333333333333333...
        
                    
             
        
        
        
Answer:
(X+6)x(X-3)
Step-by-step explanation:
X^2+6X-3X-18
Xx(X+6)-3(X+6)
(X+6)x(X-3)
big X is the variable
small x is multiplication sign