Answer:
39 degrees
Step-by-step explanation:
A triangle sums up at 180 degrees.
Therefore, 102+39=141.
Subtract 180 by 141 and you get 39!
To know if your answer is correct, add all angles and
make sure to get 180 in total!
40
i think it is 2175
2.1/√55
simga divided by sample size
