document.write( "Question 1103120: Find a 1 when d equals=−3 and a 9=3.
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\n" ); document.write( "I really don't want to screw this problem up as when I do these problems I am usually off by a couple of whole numbers I need an exact correct answer please so I don't get the wrong answer. \n" ); document.write( "

Algebra.Com's Answer #717796 by ikleyn(52790) $\"\"$ $\"About$

You can put this solution on YOUR website!
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document.write( "You, probably, talk about an arithmetic progression and  = 3 is its 9-th term.\r\n" );
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document.write( "For n-th term of an arithmetic progression, the general formula is\r\n" );
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document.write( " = .\r\n" );
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document.write( "In your case   =  = ,\r\n" );
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document.write( "which implies   =  = 3 + 24 = 27.\r\n" );
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document.write( "Answer.   = 27.\r\n" );
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document.write( "Check.   n:     1    2    3    4    5    6    7    8    9\r\n" );
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document.write( "         :   27   24   21   18  15    12   9    6    3     ! Correct !\r\n" );
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\n" ); document.write( "There is a bunch of introductory lessons on arithmetic progressions in this site:\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
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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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