Amber hikes 2 3/4 miles of nature trail in 1 hour and 15 minutes. how many miles of trail does amber hike per hour?

In triangle △abc, ∠abc=90°, bh is an altitude. find the missing lengths. ah=4 and hc=1, find bh.

What statement is true? 2x^2-9x+2=-1

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?