In the triangle above, if one of the angles has a measure of 55 degrees, what must the measure of the third angle be?

Complete the solution of the equation. find the value of y when x equals to 6 4x+y=20

The anwser cause i do not understand just plez

Using the figure below, select the two pairs of alternate interior angles.a: point 1 and point 4 b : point 2 and point 3 c: point 6 and point 6d: point 5 and point 7