Adds up to 180 degrees. For two angles to be non-supplementary the must sum to anything other than 180 degrees, to be non-adjacent they can't share a common side (Ray)
There is no distinct pattern, the scatter plot would be up down and spread apart, nothing really correlated.
Answer:
18
Step-by-step explanation:
3+9=12
12/2=6
6x3=18
Use the general form:-
(x - a)^2 + (y - b)^2 = r^2 where (a, b) is the centre and r = radius
Here the radius = 1/2 * 6 = 3 so r^2 = 9 and we have the equation:-
(x + 4)^2 + (y - 2)^2 = 9 (answer)
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Answer: 
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Step-by-step explanation:
- Cross-multiply.
- Divide both sides by 9.