Answer:
x = 14
JL = 166°
Explanation:
✔️Find x:
83° = ½(9x + 40)° => inscribed angle theorem
Multiply both sides by 2
83*2 = 9x + 40
126 = 9x + 40
Subtract 40 from both sides
166 - 40 = 9x
126 = 9x
126/9 = 9x/9
14 = x
x = 14
✔️Find JL:
arc JL = 9x + 40
Plug in the value of x
JL = 9(14) + 40 = 126 + 40
JL = 166°