Answer:
D = 120,    there are 2 real roots for F(x)
Step-by-step explanatU
using the
formula  D = b^2 - 4ac  for discriminant
D =  8^2  - 4*(-7)*2 
D = 64  + 56  =  120
 
        
                    
             
        
        
        
Answer:
OKey
Step-by-step explanation:
its 16,2341242112
 
        
             
        
        
        
Answer:
200.96 square feet 
Step-by-step explanation:
The amount of fencing Scott will need to buy can be gotten by calculating the area of the circular rock garden .
Area of a circle is given by 
Pi r^2
Where 
r = radius 
Given diameter of 16 feet
r = diameter/2 
= 16/2
= 8 feet 
Pi = 3.14
Therefore, 
Area = 3.14 x 8^2
= 3.14 x 8 x 8
= 200.96 square feet 
The amount of fencing Scott will need to buy is 200.96square feet 
 
        
             
        
        
        
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