Find the product of – 10+ and its complex conjugate.

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?

Which expression is rational? 6. , square root two, square root 14, square root 49

Find the nonpermissible replacement for binthis expression. b2/5b +5