document.write( "Question 662385: Find the first term from the given terms of the arithmetic sequence. _____, _______, ____, ____, 27, ____, ____, 42 / a1 = 7 \n" ); document.write( "
Algebra.Com's Answer #412183 by MathLover1(20850)\"\" \"About 
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since you are given _____, _______, ____, ____, 27, ____, ____, 42 / \r
\n" ); document.write( "\n" ); document.write( "\"a1+=+7\"...means you have first term already\r
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\n" ); document.write( "\n" ); document.write( "To find any term of an arithmetic sequence:\r
\n" ); document.write( "\n" ); document.write( "\"a%5Bn%5D=a%5B1%5D%2B%28n-1%29d\"\r
\n" ); document.write( "\n" ); document.write( "where \"a%5B1%5D\" is the first term of the sequence, \"d\" is the common difference, \"n\" is the number of the term to find\r
\n" ); document.write( "\n" ); document.write( "given:\r
\n" ); document.write( "\n" ); document.write( "\"a%5B1%5D=7\"\r
\n" ); document.write( "\n" ); document.write( "\"d=5\"\r
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\n" ); document.write( "\n" ); document.write( "\"n=2\"\r
\n" ); document.write( "\n" ); document.write( "\"a%5B2%5D=7%2B%282-1%295\"\r
\n" ); document.write( "\n" ); document.write( "\"a%5B2%5D=7%2B5\"\r
\n" ); document.write( "\n" ); document.write( "\"a%5B2%5D=12\"\r
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\n" ); document.write( "\n" ); document.write( "\"n=3\"\r
\n" ); document.write( "\n" ); document.write( "\"a%5B3%5D=7%2B%283-1%295\"\r
\n" ); document.write( "\n" ); document.write( "\"a%5B3%5D=7%2B10\"\r
\n" ); document.write( "\n" ); document.write( "\"a%5B3%5D=17\"\r
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\n" ); document.write( "\n" ); document.write( "\"n=4\"\r
\n" ); document.write( "\n" ); document.write( "\"a%5B4%5D=7%2B%284-1%295\"\r
\n" ); document.write( "\n" ); document.write( "\"a%5B4%5D=7%2B15\"\r
\n" ); document.write( "\n" ); document.write( "\"a%5B4%5D=22\"\r
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\n" ); document.write( "\n" ); document.write( "\"n=5\"\r
\n" ); document.write( "\n" ); document.write( "\"a%5B5%5D=7%2B%285-1%295\"\r
\n" ); document.write( "\n" ); document.write( "\"a%5B5%5D=7%2B20\"\r
\n" ); document.write( "\n" ); document.write( "\"a%5B5%5D=27\"\r
\n" ); document.write( "\n" ); document.write( "so, you have a sequence where you just need to add \"5\" to each term to arrive at the next term\r
\n" ); document.write( "\n" ); document.write( " \"7\", \"12\", \"17\", \"22\", \"27\", \"32\",\"37\", \"42\"\r
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