The ratio of the interior angles of a triangle is 3 : 3 : 4. What are the angle measures? Use the equation 3x + 3x + 4x = 180.

The sum of interior angle =180

given;

3x +3x +4x =180

    10x = 180

  x =180/10

x =18

so put the value of  x =18  in 3x, 3x and 4x

   = 3x

   =3 ×18

   = 54

   2nd one   = 4 x

                 = 4×18

                  = 72

All three angles are 54,54,72

Step-by-step explanation:

check above link.

graphically?   well, you graph them both, the solutions is where they both intersect each other, since there are two solutions, meaning they will meet twice, or namely the linear will run into the quadratic curve twice, and where they meet, those x,y coordinates are the solutions to the system.