Answer:

Step-by-step explanation:
Please refer to the attached figure for labeling of given diagram:
We are given the following angles:

Angles opposite to each other when they are formed by crossing of two lines are known as vertically opposite angles. And vertically opposite angles are always equal to each other.
Using property of vertically opposite angles:

Line CD is a straight line, so 
Also,

Hence, <em>answer</em> is
.
Answer:
-8/12 and 8/12
Step-by-step explanation:
The square root of a ratio is the ratio of the square roots.

The arc and the central angles will be the same.
If you were making a replica ferris wheel it would be similar to the larger ferris wheel. This means that all the angles would be the same. If the angles were the same, the arc measures would also be the same.
Answer:
21 plays a sport and takes a foreign language.
17 takes a language and does not play a sport.
12 play a sport and don't take language.
4 student don't do either
Step-by-step explanation:
Answer:
Relation 1,2,and 4 are functions, but relation 3 not is a function.
Step-by-step explanation:
function 1 input, no function with the same input like m in relation 3.