Lydia graphed δdef at the coordinates d (−2, −1), e (−2, 2), and f (0, 0). She thinks δdef is a right triangle. Is lydia's assertion correct?.

17 a tourist was planning a trip by car for travelling at some constant speed for 2.5 hours. however, he found that if he increases the speed by 20 km/h he can cover the same distance in 30 minutes less time than it was planned. what was the planned speed of the tourist, in km/h?

Why are gold and platinum used for jewelry

Which will you likely have to provide on a college applications. a.) personal information, b.) parents level of education, c.) career plans, d.) employment history