Answer:
3
Step-by-step explanation:
the calculator I used
http://www.alcula.com/calculators/statistics/standard-deviation/
Answer:
45
Step-by-step explanation:
-15 from both sides then you get 128, 128/8= 16.
Answer:
m<AEC = 105
Step-by-step explanation:
they are vertical angles, so they are the same measure
It is because the X is getting divided by 7.