document.write( "Question 1055802: 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\r
\n" ); document.write( "\n" ); document.write( "Calculate the probability that it would hit:
\n" ); document.write( "A) the southern Hemisphere
\n" ); document.write( "B) land in the Southern Hemisphere
\n" ); document.write( "C) sea in the Southern Hemisphere
\n" ); document.write( "D) South Africa
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Algebra.Com's Answer #670964 by Boreal(15235)\"\" \"About 
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It has a 50% chance of hitting in the Southern Hemisphere.
\n" ); document.write( "It has a 0.5*0.2=0.1 probability of hitting land in the Southern Hemisphere.
\n" ); document.write( "It has a 0.4 probability of hitting sea in the Southern Hemisphere.
\n" ); document.write( "It has a 0.1*0.05=0.005 probability of hitting South Africa.
\n" ); document.write( "Multiplication here, because of randomness or independence of the event after the first and second condition are met.
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