Angles a and b are supplementary. angle a has a measure of 80 degrees. what is the measure of angle b

Pls me this is due today and i need i will make brainliest if you me answer correctly and i will report if you try to give me a dumb answer.

Which system of linear inequalities is represented by the graph?

Tamar is measuring the sides and angles of tuv to determine whether it is congruent to the triangle below. which pair of measurements would eliminate the possibility that the triangles are congruent