The old mean was 51 now the mean is 42.33... (round that to 42) 51 - 42 = 9
Answer:
C.
make me brainlest if you copy okay
Answer: -120
Step-by-step explanation:
this would be the answer because if you take a positive and add it to a negative you get zero if their the additive inverse of the number.
It would be 56 degrees since it's a vertical angle and to get the obtuse angles you just subtract 180 from 56 and there's your answer. Hope this helped! (':
