document.write( "Question 317265: An airplane is flying at a speed of 350 mi/h at an altitude of one mile. The plane passes directly above a radoar station at time t=0
\n" ); document.write( "a. Express the distance s (in miles) between the plane and the radar station as a function of the horizontal distance d (in miles) that the plane has flown.
\n" ); document.write( "b. Express d as a function of the t (in hours) that the plane has flown.
\n" ); document.write( "c. Use composition to express s as a function of t.
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Algebra.Com's Answer #227304 by Fombitz(32388)\"\" \"About 
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a) The horizontal distance (\"d\"), the one mile altitude, and \"s\" form a right triangle.
\n" ); document.write( "Use the Pythagorean theorem.
\n" ); document.write( "\"s%5E2=1%5E2%2Bd%5E2\"
\n" ); document.write( "\"s%5E2=d%5E2%2B1\"
\n" ); document.write( "\"highlight%28s=sqrt%28d%5E2%2B1%29%29\"
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\n" ); document.write( "b) \"highlight%28d=350t%29\"
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\n" ); document.write( "\n" ); document.write( "c) \"s%28t%29=sqrt%28%28350t%29%5E2%2B1%29\"
\n" ); document.write( "\"highlight%28s%28t%29=sqrt%28122500t%5E2%2B1%29%29\"
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