Answer:A vertex (or node) of a graph is one of the objects that are connected together. The connections between the vertices are called edges or links. A graph with 10 vertices (or nodes) and 11 edges (links).
Step-by-step explanation: (The vertex formula is derived from the completing-the-square process, just as is the Quadratic Formula. In each case, memorization is probably simpler than completing the square.) For a given quadratic y = ax2 + bx + c, the vertex (h, k) is found by computing h = –b/2a, and then evaluating y at h to find k.
-The kilometer equivalent of 1 mile is 1.60934 kilometers -hence 22 kilometers will be 22*1.60934=35.40548 rounded off a 35.41 km. Since miles was per hour and km is per hour then speed is 35.41 km/h
