The answer for that is .. 17?
I'm not sure what the question is here. If an answer is communicative property, go with that. If it is asking for 
, the answer is about 84.8230016469.
Answer:
1 and 3 are both perpendicular to segment NY
Step-by-step explanation:
1. Find the slope of line NY
slope of NY = 5-(-7)/-11-5 = - 3/4
Any line that is perpendicular to NY should have a slope of the inverse of negative slope of NY.
2.Find the slope of perpendicular lines
the inverse of negative slope of NY = - (-4/3) = 4/3
X/-3 = 12 + x
x = -36 - 3x
4x = 36
x= = 9
The number is 9.
Sin A= 90* C, angle of A and C are suplementary
