help!!!!!!!
Which equation could be used to solve for the measure of angle O

Question

help!!!!!!!
Which equation could be used to solve for the measure of angle O

anonymous · Answer

attachment

anonymous · Answer

x + z = 180 
 x + y = 180 
 x - (y + z) = 360 
 x + y + z = 360

anonymous · Answer

I believe its the first one

myininaya · Answer

So why is w not in one of those equations?

myininaya · Answer

Oh is the center of the circle is suppose to be N. That could help.

anonymous · Answer

yes  it is

myininaya · Answer

That would mean a straight line with 180 degrees goes through the angles x and z.

anonymous · Answer

so it x + z = 180

myininaya · Answer

Yep.

anonymous · Answer

thank you (:

anonymous · Answer

do you have time for another question

myininaya · Answer

Put it down.

anonymous · Answer

What is the arc length of CD in the circle below

anonymous · Answer

attachment

anonymous · Answer

3.14 feet 
 4.88 feet 
 6.98 feet 
 11.78 feet

myininaya · Answer

$$\text{ arclegnth}=\frac{n^o}{360^o}  \cdot 2 \pi r $$
What is the angle there for the arc in question?
And what is the radius?

anonymous · Answer

so would it look like 30/360 X 2(3.14)(6)

myininaya · Answer

yes/

myininaya · Answer

That answer should come out to be something nice because a lot of things will cancel.

anonymous · Answer

I got 3.14

myininaya · Answer

That is right. The answer is pi or approximately 3.14.