Mikaela is competing in a race in which she both runs and rides a bicycle. she runs 5 kilometers in 0.5 hour and rides her bicycle 20 kilometers in 0.8 hour. a. at the rate given, how many kilometers can mikaela run in 1 hour? b. at the rate given, how many kilometers can mikaela bike in 1 hour? c. if mikaela runs for 1 hour and bikes for 1 hour at the rates given, how far will she travel?

Find the measure of the interior angles of the following regular polygons: a triangle, a quadrilateral, a pentagon, an octagon, a decagon, a 30-gon, a 50-gon, and a 100-gon.

Fanny mendelssohn manages all the magazines and paperback books at a local grocery store. she prices many paperbacks to sell at $7.99. the cost to the store is $5.29. what is the markup rate on a paperback book, based on its cost?

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.