The measure of an angle is 8 degrees less than three times thr measure of anothe angle. if the two angoes are supplementary , what is the measure of the larger angle?

Simplify the expression. -2/5(10+15m-20n)

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.

In a column proof the right column states your reasons