What is the number seven hundred thirty-one million, nine hundred thirty-four thousand, thirty written in standard form

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 the discriminant if a quadratic equation is 4 which statement describes the roots?

Peter measures the angles in a triangle. he finds that the angles are 95, 10 and 75. is he correct? explain your answer