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.
Answer:
You can use a number line to subtract -6 from -7. The difference is -1.
Answer:
8x+2y=68
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