Answer:
A.
Step-by-step explanation:
EF^2=18^2-12^2
EF^2=324-144
EF^2=180
EF=root 180
 
        
             
        
        
        
(2,0) it goes to the right twice but does not move upwards
        
                    
             
        
        
        
Answer:
   Square
Step-by-step explanation:
The length of AB is (a+b)-a = b. The length of BC is b-0 = b. So, adjacent sides are the same length. AB has a constant y-value, so is horizontal. BC has a constant x-value, so is vertical.
A figure with horizontal and vertical sides of the same length is a square.
 
        
             
        
        
        
Answer:
x *2 + (28-x)*4 = 100
Step-by-step explanation:
Given 
Total number of questions in the paper = 28
Out of these 28 questions let us say that x number of questions are of 2 points and 28-x questions are of 4 points.
Also, the complete test is of 100 marks
Thus, the linear equation representing the 
x *2 + (28-x)*4 = 100