The angle measures of a triangle are shown in the diagram.
What is the value of x?
(5x) on the top of the triangle 74 on the Bodem left and (4x+7) on the Bodem right
*
2 points
A. 55
B. 21
C. 11
D. 28
Let's set up an equation using the fact that the sum of the angles in a triangle is 180 degrees:
5x + 74 + 4x + 7 = 180
9x + 81 = 180
9x = 99
x = 11
Therefore, the value of x is 11. So, the answer is C. 11.