50 + 3x = 7x + 12
This is because of the exterior angle theorem.
Answer:
5. no
6. all
7. all
Step-by-step explanation:
Move all terms that don't contain y to the right side and solve.
y = - x/3 + 14/3
Hope this helps! :)
Answer:

Step-by-step explanation:
We have a 4-sided triangular pyramid
, where
