If a farmer wants to cut down three pine trees to use for a fence he is making to decide what trees to cut he wants to estimate their height he holds a 9 inch stick perpendicular to and touching the ground. he measures the shadow to be 6 inches if you want to cut down trees that are 40 feet tall how long will their shadow?

Using inductive reasoning, what are the next two number in this set? 2,3/2,4/3,5/4,

If a and −a are numbers on the number line, which expression must give the distance between them? a) 0 b) a c) |2a| d) |a|

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.