The graph shows the relationship between the volume of a rectangular prism and the volume of a square pyramid with an identical base and height what is the slope of the line

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.

James was playing a game with his friends. he won 35 points. then he lost 15, lost 40 and won 55. how did he come out

The length of the line segment joining the midpoints of sides ab and bc of the parallelogram abcd is 10. find the length of diagnol ac