document.write( "Question 151245: I am using an online study guide for the COMPASS Assessment Test, I am having trouble with this particuluar word problem. The problem involves d= rt.\r
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document.write( "If 2 planes leave the same airport at 1:00 PM, how many miles apart will they be at 3:00 PM, if one travels directly north at 150 mph and the other plane travels directly west at 200 mph.\r
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document.write( "A. 50 miles
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document.write( "B. 100 miles
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document.write( "C. 500 miles-correct answer
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document.write( "D. 700 miles
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document.write( "E. 1000 miles\r
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document.write( "I originally answered the question D 700 miles, by taking 150+ 200, multiplying the answer by 2 for 2 hours. \n" );
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Algebra.Com's Answer #111141 by scott8148(6628)![]() ![]() You can put this solution on YOUR website! the two planes are flying at a right angle to each other (north and west)\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "their distances from the airport are the legs of a right triangle, and the distance from each other is the hypotenuse\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "north bound __ d=rt __ d=150*2 __ d=300\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "west bound __ d=rt __ d=200*2 __ d=400\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "so the distance between them (hypotenuse) is ... think 3-4-5 __ or a^2+b^2=c^2 \n" ); document.write( " |