At a shelter, 40% of the dogs are puppies. There are 110 dogs at the shelter. How many are puppies?

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;

Two lines that do not intersect are skew. always sometimes or never

Select the two pairs of figures that are similar.