Miguel is making an obstacle course for field day. at the end of every sixth of the course, there is a tire. at the end of every third of the course, there is a cone. at the end of every half of the course, there is a hurdle. at which locations of the course will people need to go through more than one obstacle?

Ascientist wants to use a model to present the results of his detailed scientific investigation. why would a model be useful? a )because the model makes the concepts easier to understand b) because the model is easy to put together and to use c) because the model prevents other scientists from asking questions d) because the model requires the audience to pay full attention to it i don't know what to choose because between a and d a is much more likely than d because it only wants to get the attention of the audience. i'm confuse.