Question 1098423: About 20% of the southern hemisphere is land.south Africa takes up about 5% of the land in the southern hemisphere.a piece of space junk is falling to earth such that it would hit anywhere randomly.calculate the probability that it would hit the 1) the southern hemisphere. 2) land in the southern hemisphere. 3) sea in the southern hemisphere. 4) south Africa
Answer by Theo(13342)   (Show Source):
You can put this solution on YOUR website! the southern hemisphere is 50% of the surface of the earth, therefore the probability it would hit the southern hemisphere is .5.
20% of the southern hemisphere is land, so the probability that it would hit land in the southern hemisphere is .5 * .2 = .1.
80% of the southern hemisphere is sea, so the probability that it would hit sea in the southern hemisphere is .5 * .8 = .4
south africa takes up 5% of the land in the southern hemisphere, so the probability that it would hit south africa is .5 * .2 * .05 = .005.
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