Answer:
- parallelogram
- x = 5
- 60 units
Step-by-step explanation:
A. Opposite sides are the same length, so the figure is a parallelogram.
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B. Diagonals of a parallelogram cross at their midpoints, so ...
   9x +3 = 10x -2
   5 = x . . . . . . . . add 2-9x to both sides
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C. The longer side is 12x = 12(5) = 60 . . . . units
 
        
             
        
        
        
Answer:
3.5
Step-by-step explanation:
49÷14 is how you get x
 
        
             
        
        
        
Answer:
-4< c
Step-by-step explanation:
2> -2-c
Add 2 to each side
2+2> -2+2-c. 
4 > -c
Divide each side by -1.  Remember that dividing by -1 will flip the inequality.
4/-1  < -c/-1
-4< c
  
        
             
        
        
        
The answer would be 5x^3-2x^2=18