Answer:
100°
Step-by-step explanation:
the total of all angles around O on one side of AD is 180° (as that would represent a half-circle).
and the sum of the arc angles AB + BC + CD covers the whole 180°.
so, we have
180 = 55 + BC + 25
180 = 80 + BC
BC = 100°
There are five significant figures in 12.001
Answer: (-2;8)

Step-by-step explanation:
Chloe is earning 7.50 an hour, Marissa is earning $6 an hour so the answer is Chloe is earning 50 cents more per hour.