Question

Which equation can be used to solve for xxx in the following diagram?

Answer 1

Answer:

Equation C

Step-by-step explanation:

Thus;

All angles must add up to 360⁰ since they

are on a straight line

CALCULATION

3X + 80⁰ + 2X = 180⁰

5X + 80⁰ = 180⁰

5X = 180⁰ - 80⁰

5X = 100⁰

5X/5 = 100⁰/5

X = 20⁰