Answer:
X = 6
z = 65°
Explanation:
we use the properties of angles on a straight line add up to 180° to find X
(11x - 1)° + (12x +43)° = 180°
11x -1 + 12x + 43 = 180
23x = 138
X = 6
to get z we use the property that vertically opposite Angles are equal
Therefore angle (11x - 1) = z
z = 11 × 6 -1
z = 65