Answer:
B.
Step-by-step explanation:
3.9x + 0.8y
this is your answer
where are the anglessssssssss
B
The measure of the chord- chord angle ABC is half the sum of the arcs intercepted by the angle and its vertical angle, that is
∠ ABC = 0.5( 82 + 44)° = 0.5 × 126° = 63° → B
so
. Plugging that into BDC we get 11