Answer:
317°
Step-by-step explanation:
The missing question is: What is the arc measure of ACD
?
In the figure attached, circle P is shown.
Segment AB divides the circle into two halves. Then,
arc AD + arc DC + arc CB = 180°
From the picture, arc DC = 90°, therefore:
arc AD + arc CB = 90°
(7x + 1) + (9x - 7) = 90
16x - 6 = 90
16x = 90 + 6
x = 96/16
x = 6°
From the picture,
arc ACD + arc AD = 360°
arc ACD = 360 - (7x+1)
arc ACD = 360 - 7(6) - 1
arc ACD = 317°
