Cho biết y tỉ lệ thuận với x theo hệ số tỉ lệ k và khi x=4 thì y=12 a) Viết công thức tính y theo x
b) Tính x khi y=9

If 24 people have the flu out of 360 people, how many would have the flu out of 900. choose many ways you could use proportion that david would use to solve this problem

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.

Answer for 10 points show work you guys in advanced < 3