Answer:
hi sadly I can't find the proper answer for you, tried working it out
 
        
             
        
        
        
Answer: 120/21=40/7
49/19
240/20=12/1
36/14=18/7
63/13=63/13
12/7=12/7
6/6=1/1
Step-by-step explanation:
 
        
             
        
        
        
Answer: 254.35ins
Step-by-step explanation:
Circumference of a circle = 2πr or πd.
Given the area of the circle = 56.52ins. To find the area of the circle, we first need to find the radius of the circle first by making r the subject of the formula.
 2πr = 56. 52
 r = 56.52
 ----------
 2π
where π = 3.14 
Now put this in r above and solve
 r = 56.52/2 x 3.14
 = 56.52/6.28
 = 9ins.
Now to find the area of the circle substitute for r in the equation of the area of the circle below
Area of circle = πr²
 = 3.14 x 9²
 = 3.14 x 81
 = 254.35ins
 
        
             
        
        
        
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Among the choices the one that  shows that polynomials are closed under addition when two polynomials 4x2 − 8x − 7 and −5x + 16 are added is <span>4x2 − 13x + 9 will be a polynomial</span>