Answer:
12
Step-by-step explanation:
In the problem it shows that A and D are equal so do 5y=60 then solve and you get 12
The equation would be ' y = 1/2x'
The photo of my working will be attached.
Not the best handwriting but I hope it helped!
Answer:
∠ B = 85°
Step-by-step explanation:
the inscribed angle B is half the measure of its intercepted arc AC , then
∠ B =
× 170° = 85°