Answer:
The measure of angle A is 30 degrees.
Step-by-step explanation:
Since all triangles are equal to 180 degrees, you take set up an equation where u add 2x and 3x to get 5x and u add that to 130 and set it equal to 180
2x+3x+130=180 ( combine like terms)
5x=50 (subtract 130 from both sides to isolate our variable which is x)
x=10 (divide both sides by 5 to get rid completly isolate our variable)
Now we know x=10 you can plug that in as our x value so 3x becomes 3*10 which equals 30 which is your answer.
