Find the length of side x in simplest radical form with a rational denominator.

If 90° < θ < 180° and cotθ = -1/3, then cscθ =

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?

If t8 = 4 and t12 = −2, find the first three terms of the arithmetic sequence.