Answer: x = 5
Step-by-step explanation: This is an isosceles triangle, which means two sides are equal in length and two angles are equal in measurement.
Line BA = Line BC
Similarly, Angle A = Angle C
Angle A plus Angle C equals 146°
Also the sum of the interior angles of a triangle is 180°
Therefore, 146 + (6x + 4) = 180
Subtract 146 from both sides of the equation
6x + 4 = 34
Subtract 4 from both sides of the equation
6x = 30
Divide both sides of the equation by 6
x = 5