Answer: 5040
Step-by-step explanation: There are 4 sides which is equal to 1260, 1260 x 4 = 5040
 
        
             
        
        
        
You need to subtract 25 by 18
        
             
        
        
        
Answer:
x + 3y = -12
Step-by-step explanation:
y = mx + b
m is the slope = rise / run: 
rise = 1
run = 3
the line is downhill so its negative 
m = - 1 / 3
b is the y intercept which is when the line cross over the y axis: - 4
y = - 1/3x - 4
multiply both sides by 3
3y = -1x - 12
add x to both sides
x + 3y = -12
 
        
             
        
        
        
Answer: x = 22
Step-by-step explanation: Since x is unknown, we want to isolate it and determine what it equals. We know that x - 3 gives us 19, but we don't want to know what x - 3 is, just x. So we can add three to both sides of the equation, to get our answer and keep it balanced. As a result, we get x = 22
 
        
                    
             
        
        
        
Answer:
x = 4
Step-by-step explanation:
6x - 9 = 15
6x - 9 + 9 = 15 + 9
6x = 24
6x / 6 = 24 / 6
x = 4