Question

Determine value of x from attached pic

Answer 1

x = 18

Explanation:

130 + 2(5x - 10) + 70 = 360

130 + 10x - 20 + 70 = 360

10x = 180

x = 18

Answer 2

x = 18

Explanation:

Given that the two chords are equal,

130 + (5x - 10) + 70 + (5x - 10) = 360

⇒ 180 + 10x = 360

⇒ 10x = 180

⇒ x = 18