Question

which equation can be used to solve for x in the following diagram? choose 1 answer: a 7x + 11x = 180 b 7x + 90 = 11x c 7x + 11x = 90 d 11x = 7x

Explanation:

Step1: Identify angle - relationship

The two angles \(7x^{\circ}\) and \(11x^{\circ}\) form a right - angle (as indicated by the right - angle symbol in the diagram).

Step2: Set up the equation

The sum of two angles that form a right - angle is \(90^{\circ}\). So, the equation is \(7x + 11x=90\).

Answer:

C. \(7x + 11x = 90\)