The value of x based on the diagram is 5. option A.
What is the value of x?
From the diagram;
Angle A = 7x°
Angle B = 90°
Angle C = 11x° ( vertical opposite angles are equal)
The sum of angles in a triangle is 90°
7x + 90 + 11x = 180°
18x + 90 = 180
18x = 180 - 90
18x = 90
Divide both sides by 18
x = 90/18
x = 5
Therefore, x equals 5.