<span>200/40=5 5/2=2.5 2.5+5=7.5 30/7.5 = 4 hours</span>
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
8 it is this !!!!!!!!!!!!!!!!
Answer:
D. shows a 90º counterclock wise rotation
