plz help me i dont understand

Answer:
Step-by-step explanation:
The sum of a triangle is 180 degrees so if you add up the 2 to get 102 than subtract it by 180-102 you will get 78 degrees as your remaining answer as k because once you add all of those up you will get 180 degrees which is equivalent to the triangle.
The answer is: 78°
Since the sum of the angles of a triangle must be equal to 180°
Using the given information:
[tex]47+55+k=180\\K=180-102=78[/tex]
So, k is equal to 78°
We have an acute triangle since all of the angles are between 0° and 90°
Have a nice day!