What is the value of k? k = 28 k = 29 k = 31 k = 42

k = 29 is the answer.

Step-by-step explanation:

Since we know that sum of all angles on a straight line is 180°

Since two angles on the given line are (5k - 3) and (9 + k)

Therefore sum of these two angles is 180°

So (5k - 3) + (9 + k ) = 180°

6k + 6 = 180

6k = 180 - 6 = 174

k = 174/6 = 29

Therefore option B. k = 29 is the answer.

step-by-step explanation:

mean or average is 40.6