Diameter= 2 times the radius 
2r=d
2r=10.2
R= 10.2/2
R=5.1
Therefore, the radius is 5.1 units which makes the answer choice C correct. 
Hopefully, this helps!
        
                    
             
        
        
        
Answer:  D. 7
Step-by-step explanation:
The problem tells you that x = 0 so replace everything that is x in the equation with 0 so the problem becomes
7 + (-3(0)^2)
Now we just solve the problem normally.
solve the problem in the parenthesis first, we must multiply -3 times 0^2 is 0
so now our problem is 7 + 0 which is 7
 
        
             
        
        
        
Answer:
y = -4
Step-by-step explanation:
-2x + 5y = 8
Let x=-14
-2(-14) +5y = 8
28 +5y = 8
Subtract 28 from each side
28-28 +5y = 8-28
5y = -20
Divide by 5
5y/5 = -20/5
y = -4
 
        
             
        
        
        
Answer:
The sum of all positive integers is
 5 + 6 + 7 + 8 + 9 + 10
               = <em>45</em>
Step-by-step explanation:
Because 
 and 
 So positive numbers between 4.9 and 10.09 are
  <em>5+6+7+8+9+10 = 45</em>
<em />
<em>Brainliest will be appreciated.</em>