Jamaal read StartFraction 1 Over 11 EndFraction of a book in Two-fifths of an hour. At this rate, how long will it take him to read the entire book?
StartFraction 2 Over 55 EndFraction of an hour
StartFraction 5 Over 22 EndFraction of an hour
4 and two-fifths hours
27 and one-half hours

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.

Elena is paid a constant rate for each hour she works. the table shows the amounts of money that elena earned for various amounts of time that she worked.

In dire need~! describe how to use area models to find the quotient 2/3 divided by 1/5. check your work by also finding the quotient 2/3 divided by 1/5 using numerical operations only.