Answer:
(1,2)
Step-by-step explanation:
Substitution:
x + 2y = 5  Solve for x
x = -2y + 5  Substitute -2y + 5 in for x in the second equation
4x - 12y = -20
4(-2y + 5) - 12y = -20  Distribute the 4
-8y + 20 - 12 y = -20  Combine the y term
-20y + 20 = -20  Subtract 20 from both sides
-20y = -40  Divide both sides by -20
y = 2
Plug y into either of the 2 original equations to get x.
x + 2y = 5
x + 2(2) = 5
x + 4 = 5
x = 1 
The answer is (2,1).
Elimination:
x + 2y = 5      4x - 12y = -20.  We want to eliminate with the x or the y.  I am going to eliminate the x's that means that I have to multiply the first equation all the way through by -4
(-4)(x + 2y) = (5) (-4)  That makes the equivalent expression
-4x - 8y = -20  I will add that to 4x - 12y = -20
<u>4x - 12y = -20</u>
0x -20y = -40
-20y = -40
y = 2.  Plug 2 into either the 2 original equation to find x.  This time I will select the second original equation to find x.
4x -12y = -20
4x - 12(2) = -20
4x - 24 = -20
4x = 4
x = 1
 
        
             
        
        
        
The answer is b gjfjkfjrurjdjhzjdjdjdjduueeueuueurjr
        
                    
             
        
        
        
Answer:
A; 4,6,8
Step-by-step explanation:
 
        
                    
             
        
        
        
Answer:


This is the formula for the <u>pythagorean </u><u>theorem </u>i.e, one leg of a triangle squared plus another leg of a triangle squared equals the hypotenuse squared.
 
        
                    
             
        
        
        
8^6 + 4^11 = 262144 + 4194304 = 4456448 
4456448/17 = 262144 is the answer