Answer:
Equations are
20c + 10m = 495..............(1)
8c + 1m = 178.5.................(2)
Now ,  equation (2) * 10 = 80c + 10m = 1785...........(3)
So, Eq. (3) -  Eq(1) =
80c + 10m - 20c - 10m = 1785 - 495
60c = 1290
c= 21.5
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Now place the value of c in Eq (2) 
So , m =6.5
Mark my answer as brainlist answer
Step-by-step explanation:
 
        
             
        
        
        
Answer:
All circles are similar. Since they are all the same shape; they are all alike. It is a property.
Step-by-step explanation:
 
        
             
        
        
        
Step-by-step explanation:
Average mean = (q1 + q2 + q3)/3.
 
        
                    
             
        
        
        
Answer:
2.4384 meters
Step-by-step explanation:
1 foot is 0.3048 meters. To find 8 ft in meters, multiply 8*0.3048 = 2.4384 meters.