What is the value of x? Enter your answer in the box.
x =
A triangle with angle measures thirty-nine degrees and one hundred two degrees. The third angle has an unknown measure, x degrees.

x=39

Step-by-step explanation:

The sum of the measure of all of the interior angles of a triangle is equal to 180 degrees. If a triangle has angle measures known to be 102 and 39 degrees, in order to find the last angle measure an equation can be used such as . When solving this equation the third angle measure is x, which is revealed to be 39 degrees.

i believe it is c.y = 9x

rise over run. 9 units up over 1 unit right or 9/1