document.write( "Question 1166729: Given the sequence{-1,3,7,11,...}, find a 25 \n" ); document.write( "
Algebra.Com's Answer #791243 by ikleyn(52788)\"\" \"About 
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document.write( "The pattern shows an arithmetic progression with the first term of -1 and the common difference of 4.\r\n" );
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document.write( "The general formula for the n-th term of an AP is  \"a%5Bn%5D\" = \"a%5B1%5D\" + d*(n-1).\r\n" );
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document.write( "In the given case  \"a%5B25%5D\" = -1 + 4*(25-1).\r\n" );
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document.write( "You can complete calculations on your own.\r\n" );
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\n" ); document.write( "\n" ); document.write( "You are explained and instructed (!)\r
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\n" ); document.write( "\n" ); document.write( "For introductory lessons on arithmetic progressions see \r
\n" ); document.write( "\n" ); document.write( "    - Arithmetic progressions\r
\n" ); document.write( "\n" ); document.write( "    - The proofs of the formulas for arithmetic progressions \r
\n" ); document.write( "\n" ); document.write( "    - Problems on arithmetic progressions \r
\n" ); document.write( "\n" ); document.write( "    - Word problems on arithmetic progressions\r
\n" ); document.write( "\n" ); document.write( "in this site.\r
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\n" ); document.write( "\n" ); document.write( "Also,  you have this free of charge online textbook in ALGEBRA-II in this site\r
\n" ); document.write( "\n" ); document.write( "    - ALGEBRA-II - YOUR ONLINE TEXTBOOK.\r
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\n" ); document.write( "\n" ); document.write( "The referred lessons are the part of this online textbook under the topic \"Arithmetic progressions\".\r
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\n" ); document.write( "\n" ); document.write( "Save the link to this textbook together with its description\r
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\n" ); document.write( "\n" ); document.write( "Free of charge online textbook in ALGEBRA-II
\n" ); document.write( "https://www.algebra.com/algebra/homework/complex/ALGEBRA-II-YOUR-ONLINE-TEXTBOOK.lesson\r
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\n" ); document.write( "\n" ); document.write( "into your archive and use when it is needed.\r
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