The measure of x from the figure is 21
The triangle in a semicircle is always a right angles triangle. From the figure shown, we can say that the triangle G J K is right triangle. Therefore
m<K = 90degrees
Given that m<K = 4x + 6, we will equate both angles to find the value of x as shown:
4x + 6 = 90
4x = 90 - 6
4x = 84
x = 21
Hence the measure of x from the figure is 21
Learn more on circle geometry here: https://brainly.com/question/24375372