To increase an amount by 21% multiply by

Consider the proof. given: segment ab is parallel to line de. prove: what is the missing statement in step 5?

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?

Give me the equations of two lines that have the same slope but are not parallel.