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Rudik [331]
3 years ago
10

Geometry help with number 18!

Mathematics
1 answer:
lora16 [44]3 years ago
4 0
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
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Answer:

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Step-by-step explanation:

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Comment

It's a good thing that the domain is confined or the graph is. That function is undefined if x < - 3 

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