X^2 + y^2 - 2x + 8y - 47 = 0 
x^2 + y^2 - 2x + 8y = 47 
(x^2 - 2x) + (y^2 + 8y) = 47 
(x^2 - 2(1)x) + (y^2 + 2(4)y) = 47 
(x^2 - 2(1)x + 1^2) + (y^2 + 2(4)y + 4^2) = 47 + 1^2 + 4^2
(x - 1)^2 + (y + 4)^2 = 64 = 8^2
r=8
        
                    
             
        
        
        
Answer:
The number of hours. 
Step-by-step explanation:
The dependent variable is what you are mesuaring.
 
        
             
        
        
        
here is the solution to the question 
 
        
             
        
        
        
 Perimeter = 2*(length +width)
perimeter = 2*(3x + (3x +(2x+6)))
.. = 2*(3x +3x +2x +6)
.. = 2*(8x +6)
perimeter = 16x +12
If x=3, the perimeter is 16*3 +12 = 60 inches.
        
             
        
        
        
Answer:
B. 10
Step-by-step explanation:
The first choice has 2 options: square or circle
The second choice has 5 options: orange, blue, yellow, red, or green. 
2 x 5 = 10 total outcomes