Which of the following is true of vertex-edge graphs?

(1)they can model real-world problems.
(2)they can all be solved.
(3)euler paths are the same as hamilton paths.
(4)all vertices must be used once in hamilton circuits.

Aresearch group wants to find the opinions’ of city residents on the construction of a new downtown parking garage. what is the population of the survey downtown shoppers downtown visitors downtown workers city residents

This is a map of the mars exploration rover opportunity predicted landing site on mars. the scale is 1cm : 9.4km. what are the approximate measures of the actual length and width of the ellipse? i mostly need to know how to set it up : )

If we pull out the middle player of team a and the fourth player of the team b. what will be the force of team a and team b? what is their sum of forces