BE is parallel to CD, therefore, m∠BEC=m∠ECD, therefore mBC=mDE
BE is the diameter, so Arc BE is 180 degree
mBC+mCD+mDE=180
replace mCD with 3mBC, and replace mDE with mBC: mBC+3mBC+mBC=180
5mBC=180
mBC=180/5=36
mCD=3mBC=3*36=108
the inscirbed angle m∠ECD= the measure of arc DE=36
        
             
        
        
        
1 ton = 2,000 pounds 
3 tons = 6,000 pounds
$480/6,000 = 0.08 
per pound is $0.08
        
             
        
        
        
Answer:
GCF=2 LCM=140
Step-by-step explanation:
 
        
             
        
        
        
Answer: median and mean are the same
Step-by-step explanation:
The error committed by Michela is by saying 
The median and mean are the same.
Because in statistics, we can't use mode to predict the median and the mean.