Acyclist rides her bike at a speed of 20 kilometers per hour. what is this speed in miles peer hour? how many miles will the cyclist travel in 3 hours? in your computations, assume that mile is equal to 1.6 kilometers.

How far could you drive on 50 gallons of gas

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.

Seymour is twice as old as cassandra. if 16 is added to cassandra’s age and 16 is subtracted from seymour’s age, their ages become equal. what are their present ages? show !