angle 1 and angle 2 form a linear pair. if angle 1=(5x+9) and angle 2 =(3x+11)find the measure of each angle

In triangle abc segment de is parallel to the side ac . (the endpoints of segment de lie on the sides ab and bc respectively). find de, if ac=20cm, ab=17cm, and bd=11.9cm;

Select the correct answer. joshua likes to read. he read 6 books when he was 6 years old. every year he doubled the number of books he read the previous year. how many total books did he read between the ages of 6 and 10? a. 60 b. 90 c.186 d.187

Anyone? 15m is what percent of 60m; 3m; 30m; 1.5 km?