Answer:
153.86 
Step-by-step explanation:
 
        
             
        
        
        
How to round 409,184 to the nearest ten thousand 
409,184=410,000
so 409,184 rounded to the nearest ten thousand is 410,000
        
             
        
        
        
Answer:
Measure of ∠K=180-∠U 
Or
Measure of ∠K=1/2m(arc DUC)
Step-by-step explanation:
Given:
DUCK quadrilateral inscribed in circle with center O
To Find:
Measure angle K
Solution:
Here the Quadrilateral in inscribed in a circle with center O named as DUCK
So angle K and  U are opposite to each other
We know that the angle of Quadrilateral inscribed in a circle are supplemenatry angles
Hence
∠U+∠K=180 
Or The ∠K=1/2*m∠arc(DUC).
Hence depending on the given value for arc measure or angle of quadrilateral we calculate the angle K
 
        
                    
             
        
        
        
Probably y = 8x. 56 = 8(7), so that works. Without more data, I couldn't say if it could be something else, so that's what I go with.