document.write( "Question 1144531: An airplane is 3349 m above sea level. At the same time, a submarine is directly under the plane at 1648 m below sea level. How far above the submarine is the plane? \n" ); document.write( "
Algebra.Com's Answer #765677 by Theo(13342)\"\" \"About 
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the airplane is 3349 meters above sea level.
\n" ); document.write( "the submarine is 1648 meters below sea level.
\n" ); document.write( "3349 + 1648 = 4997 meters.
\n" ); document.write( "that's how many meters the plane is above the submarine.\r
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\n" ); document.write( "\n" ); document.write( "you can look at sea level as the 0 point on the number scale.
\n" ); document.write( "above sea level is to the right.
\n" ); document.write( "below sea level is to the left.
\n" ); document.write( "the difference between them is the distance between the submarine and sea level plus the distance between the plane and sea level.\r
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