For the data set: 12, 8, 6, 6, 9, 8, 7, 11, 6, “6” is the value for which measure? Select two answers.

Hi my sisters and brothers can tell me the answer because i don’t understand the question

Write the expression in complete factored form. 5n_(c - 3) - n(c - 3) =

Quadrilateral abcd in the figure below represents a scaled-down model of a walkway around a historic site. quadrilateral efgh represents the actual walkway. abcd is similar to efgh. what is the total length, in feet of the actual walkway?