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°
Answer:
The balance of the savings account in 15 years will be $1,750.24.
It would be 20
21.3
-1.8
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19.5 rounded would be 20