document.write( "Question 235884: Two ships leave port at the same time. One sails south at 15 mi/h and the other sails east at 20 mi/h. Find a function that models the distance D between the ships in terms of the time t (in hours) elapsed since their departure. \n" ); document.write( "
Algebra.Com's Answer #173692 by ankor@dixie-net.com(22740)\"\" \"About 
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Two ships leave port at the same time.
\n" ); document.write( "One sails south at 15 mi/h and the other sails east at 20 mi/h.
\n" ); document.write( " Find a function that models the distance D between the ships in terms of the time t (in hours) elapsed since their departure.
\n" ); document.write( ":
\n" ); document.write( "This is right triangle, legs formed by the path of the two ships
\n" ); document.write( "distance between the ships is the hypotnenus
\n" ); document.write( "a^2 + b^2 = c^2
\n" ); document.write( ";
\n" ); document.write( "a = 15t
\n" ); document.write( "b = 20t
\n" ); document.write( "c = d
\n" ); document.write( ":
\n" ); document.write( "d(t) = \"sqrt%28%2815t%29%5E2+%2B+%2820t%29%5E2%29\"
\n" ); document.write( ":
\n" ); document.write( "d(t) = \"sqrt%28225t%5E2+%2B+400t%5E2%29\"
\n" ); document.write( ":
\n" ); document.write( "d(t) = \"sqrt%28625t%5E2%29\"
\n" ); document.write( "d(t) = 25t \n" ); document.write( "
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