I think it is -14. I inserted 4 as n. I don't know if that's how you do it.
Answer:
$7.20
Step-by-step explanation:
If I'm correct 158 and S are supplementary angles, meaning that they both must add up to 180, so to find the answer subtract 158 from 180
180 - 158 = 22
S = 22
Mean = (14 + 16 + 7 + 9 + 11 + 13 + 8 + 10) ÷ 8 = 11
Variance =
[ (14-11)²+(16-11)²+(7-11)²+(9-11)²+(11-11)²+(13-11)²+(8-11)²+(10-11)² ]/7 = 9.71
Answer: 9.71
C; 120 because 24x=360 so x=15. Then ABC is 8x, so 8*15=120.
