A bicycle rider travels 50.0 Km in 2.5 hours. What is the cyclists speed? 25 km/hr
23 km/hr
20 km/hr
28 km/hr

20 Km/hr

Explanation:

You have to divide the Km and Hr

I hope it help you

answer: at room temperature (roughly 20 degrees c), you can dissolve 203.9 grams (or 200 grams) of sugar in 100 ml of water. as water temperature increases, the amount of sugar that will dissolve increases, up to about 500 grams of sugar in 100 ml water at 100 degrees c.

explanation:

answer : a model is often used to explain and make things easier to understand when any scientific topic needs to be demonstrated and explained.

as in this case where a scientist wants to use a model to present the results of his detailed scientific investigation. he should do it as it will him to make the audience understand the concept in a much better way. also, it can be changed according to new scientific understandings.