Assuming that is a square pyramid
that is the square base+4 triangles
that is
side^2+4(1/2bh)
where b=side=14in
and h=height=13in
surface area=14^2+4(1/2)(14)(13)
SA=196+(2)(182)
SA=196+364
SA=560 square inches
        
             
        
        
        
To solve this equation by elimination, what you would do is multiply one of the equations by -1, or distribute -1 to each term in the equation, any of the 2 equations. Then align the equations and add them together. 
-(X + 3y = 3) 
-X - 3y = -3
-X - 3y = -3
X + 6y = 3 
__________
 3y = 0 
 y = 0/3 = 0. 
Now we can solve for x, by simply plugging the value of y into any of the 2 equations. 
X + 6y = 3 
X + 6(0) = 3 
X + 0 = 3 
X = 3. 
The solution to your system of equations would be (3,0). 
Check this by plugging in the point to the other equation and see if it is true.
X + 3y = 3
(3) + 3(0) = 3 
3 + 0 = 3
3 = 3.
Thus it is the solution.
        
             
        
        
        
Answer:
B. 4,1
Step-by-step explanation:
 
        
                    
             
        
        
        
Answer:
12y-8
Step-by-step explanation:
If you distribute the 2 you will 12y-8
 
        
             
        
        
        
Answer:
x is less than twenty one