I'm assuming you mean Cartesian plane. It is the same as a coordinate plane. There are two perpendicular lines with an x (horizontal) and y (vertical) axis.
All of the angles in a triangle add up to 180°.

The missing angle is 146°
I am pretty sure your correct answer is 3380.
Answer:
52 = 2x + 11
x = 20.5
Step-by-step explanation:
52 is the total
the 2 passes cost the same price therefore have the same, like, term: x.
11 is the cost of one concert ticket.
mix them in a mixing bowl and done!
52 = 2x + 11
using linear equations do the equation to figure out x.
x = 20.5
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