Question

What is m<9?

Your response should be at least 3 complete sentences. Be sure to include any relevant measurements and calculations. FAILURE TO SHOW WORK WILL RESULT IN A LOSS OF POINTS. no plagiarism!!

Answer 1

9514 1404 393

Answer:

70°

Explanation:

Angles 2 and 13 are alternate exterior angles, so are congruent. The value of x can be found by solving the equation that equates the expressions for the measures of these angles. Once x is found, the measure of angle 13 can be determined. The measure of angle 9 is the supplement of angle 13.

So, ...

m∠2 = m∠13

8x +14 = 10x -10

24 = 2x . . . . . . . . add 10-2x

12 = x

m∠13 = 10x -10 = 10·12 -10 = 110

m∠9 = 180° -110°

m∠9 = 70°