115 degrees because there are 180 degrees in a triangle so let the missing angle in the trinagle be x. Then we have x+75+40=180. Solving for x and subtracting that from 180 (supplementary angles) we get 115 degrees.
Please show the rest of the question if there is any
Answer:
(-5,2), (-5,4), and (-1,1)
Step-by-step explanation: