Please answer my question i can't find any answers for it

Find the value of x for which abcd must be a parallelogram -9-6x x-30

Graph the system of inequalities presented here on your own paper, then use your graph to answer the following questions: y < 4x − 8 y is greater than or equal to negative 5 over 2 times x plus 5 part a: describe the graph of the system, including shading and the types of lines graphed. provide a description of the solution area. (6 points) part b: is the point (5, −8) included in the solution area for the system? justify your answer mathematically. (4 points)

The legs of a right triangle measure 6 meters and 8 meters. what is the length of the hypotonuse.