Answer:
Step-by-step explanation:
y = kx
400 = kr . . . . . . (1)
also, r = 4k . . . .(2)
400 = k(4k) = 4k^2
k^2 = 400/4 = 100
k = sqrt(100) = 10
 
        
             
        
        
        
4575.92 inches all u gotta do is multiply
        
             
        
        
        
Answer:
B
Step-by-step explanation:
PEMDAS
8 + 2^3 x 5
8 + 8 x 5
8 + 40
48
 
        
             
        
        
        
The answer is D, the ordered pair (5,3) 
        
                    
             
        
        
        
I think the answer is 2 13/20
Or, in decimals:             1.3