document.write( "Question 1066884: In a round-robin chess tournament, each player is paired with every other player once. The function, shown below, models the number of chess games, N, that must be played in a round-robin tournament with t chess players. In a round-robin chess tournament, 6 games were played. How many players entered thetournament?\r
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Algebra.Com's Answer #682111 by ikleyn(52781) $\"\"$ $\"About$

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\n" ); document.write( "In a round-robin chess tournament, each player is paired with every other player once.
\n" ); document.write( "The function, shown below, models the number of chess games, N, that must be played in a
\n" ); document.write( "round-robin tournament with t chess players. In a round-robin chess tournament, 6 games were played.
\n" ); document.write( "How many players entered thetournament?\r
\n" ); document.write( "\n" ); document.write( "how to solve formula? N=t^2-t / 2
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document.write( "You need to solve the equation  = 6.\r\n" );
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document.write( "Multiply both sides by 2. You will get an equivalent equations\r\n" );
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document.write( " = 12,\r\n" );
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document.write( " = 0,\r\n" );
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document.write( "(t-4)*(t+3) = 0.\r\n" );
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document.write( "The roots are t= 4 and t= -3.\r\n" );
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document.write( "Since you need integer positive solution, the only one is t= 4.\r\n" );
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document.write( "Answer. 4 players.\r\n" );
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