25 a tree that is 18 meters tall casts a shadow that is 6 meters long at the same time another tree casts a shadow thats 9 meters long how tall is the second tree? plz show all work define variable write proportion

If a revenue in total for a month was $9,950, fixed expenses were $9,000, and variable expenses were $300 what would be the total profit/ loss for the month?

What is the distance between (3,k+1) and (2k, k-1)

Among the most famous of all meteor showers are the perseids, which occur each year in early august. in some areas the frequency of visible perseids can be as high as 40 per hour. given that such sightings are poisson events, calculate the probability that an observer who has just seen a meteor will have to wait at least five minutes before seeing another.