Answer:
Approximately (2, 1)
See image
 
Step-by-step explanation:
Rearrange each equation so it is ready to be graphed on an x-y-axis (see image) look for the point where the two lines cross. This is the solution for the system of equations. 
 
        
             
        
        
        
9 loljdjdbdbbdhdhdsivsvsg7sg7s7f 
 
        
                    
             
        
        
        
3y (y is the unknown number but it represents one number only... and also 3y represents 3 multiply by y)
        
             
        
        
        
Answer:
50,75,and 100 there's supposed to be a 20 too but it's not there but oh well 
 
        
             
        
        
        
The volume of the given trapezoidal prism is 312 cubic units.
Step-by-step explanation:
Step 1:
To find the volume of a trapezoidal prism, we multiply the area of the trapezoidal surface with the height of the prism.
The area of a trapezoidal surface, 
a and b are the lengths of the upper and lower bases and h is the height of the trapezoid.
For the given trapezoid, a is 5 units long and b is 8 units long while height, h is 4 units.
The area of the trapezoidal surface, 
So the area of the trapezoidal surface is 26 square units.
Step 2:
To determine the volume of the prism, we multiply the area of the trapezoidal surface with the height of the prism.
The area is 26 square units and the height of the prism is 12 units.
The volume of the prism, 
The volume of the given trapezoidal prism is 312 cubic units.