When you arrange the N points in sequence around the polygon (clockwise or counterclockwise), the area is half the magnitude of the sum of the determinants of the points taken pairwise. The N determinants will also include the one involving the last point and the first one.
For example, consider the vertices of a triangle: (1,1), (2,3), (3,-1). Its area can be computed as
  (1/2)*|(1*3-1*2) +(2*-1-3*3) +(3*1-(-1)*1)|
  = (1/2)*|1 -11 +4| = 3
 
        
        
        
4/10 and 6/10 
(40% and 60%)
        
             
        
        
        
Answer:x=0 is the first statement, 3x+2<12 is the greater justification 
Step-by-step explanation:
 
        
             
        
        
        
Answer:
x = 750
Explanation:
25x = 30 
1. Multiply 25 by 30
 25 * 30 = 750
2. Divide 750 by 25 
 750/25 = 30
3. Divide 750 by 30
 750/30 = 25
Therefore, x = 750