Answer:
x = 17
Step-by-step explanation:
Linear Pair of Angles
A linear pair of angles are formed when two lines intersect each other at a single point.
The sum of angles of a linear pair is always equal to 180°.
The image shows a linear pair of angles 2x+9 and 8x+1. The sum is 180°, thus:
2x + 9 + 8x + 1 = 180
Simplifying:
10x+ 10 = 180
Subtracting 10:
10x = 170
Dividing by 10:
x = 170/10
x = 17
