Answer:
The answer is 82.
Step-by-step explanation:
Just work it through. 
 
        
             
        
        
        
Answer:
no solution
Step-by-step explanation:
5d - 8 = 1 + 5d
Add 9 to both sides
5d = 9 + 5d
Subtract 5d
0 does not equal 9
No solutions
 
        
             
        
        
        
Answer:
 x2 2.75
Step-by-step explanation:
 
        
             
        
        
        
Answer:
D
Step-by-step explanation:
Circumference = Pi * radius^2
The radius is half of the diameter, 23.