Answer:
D
Step-by-step explanation:
I dont think this needs explained
 
        
                    
             
        
        
        
Answer:
I would say parallelogram. So the rectangle still fits but more shapes can be applied.
 
        
             
        
        
        
Answer:
-1/3
Step-by-step explanation:
 
        
                    
             
        
        
        
Let us calculate the area of the walk.
Since the width of the walk is 3 feet, and the walk will be placed all the 4 sides, 
Length of the plot including walk = 20 + (2 × 3) = 20 + 6 = 26 feet.
Breadth of the plot including walk = 30 + (2 × 3) = 36 feet.
Area of the plot including walk = 26 × 36 square feet.
Area of the plot = 20 × 30 square feet.
Area of the walk = (26 × 36) - (20 × 30)
= 936 - 600
= 336 square feet.
=  square yards
 square yards
= 37.3 square yards
Cost of the walk per square yard = $12.25.
Therefore, total cost of the walk = 12.25 × 37.3 = $456.92.
 
        
             
        
        
        
Answer:
-3
Step-by-step explanation:
First you subtract the first equation from the second one and you get:
3x  + 3y   =  3
x +  y   =  1  
y =  1 - x
Then you use it on the first equation
888x  +  889 (1 - x)  =  890
888x  +  889  -  889x  =  890
-x = 1
x = -1
y = 1 - x 
y = 1 - (-1) = 2
Now that you have those two numbers, we have to subtract the value of x from y:
x - y
-1 - 2 = -3
Hope this helps bro