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armando87
25.08.2019 •
Mathematics
Select the postulate about two planes.
postulate 1: a line contains at least two points.
postulate 1a: a plane contains at least three points not all on one line.
postulate 1b: space contains at least four points not all on one plane.
postulate 2: through any two different points, exactly one line exists.
postulate 3: through any three points that are not one line, exactly one plane exists.
postulate 4: if two points lie in a plane, the line containing them lies in that plane.
postulate 5: if two planes intersect, then their intersection is a line.
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Ответ:
y = 7
Step-by-step explanation:
-2y + 6 =-8 ( y - 6 )
-2y + 6 = -8y + 48
-2y + 8y = 48 -6
6y = 42
y = 42/6
y = 7