document.write( "Question 1197683: Given a1=3, and a5=-17 (the first and the fifth number in an arithmetic series) what's a20 (the twentieth term in the series) \n" ); document.write( "
Algebra.Com's Answer #831053 by ewatrrr(24785)\"\" \"About 
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document.write( "Hi \r\n" );
document.write( "arithmetic series:  a1=3, and a5=-17\r\n" );
document.write( " \"a%5Bn%5D=a%5B1%5D%2B%28n-1%29%2Ad\"   | Need to Know\r\n" );
document.write( " \"a%5B5%5D=3+%2B%284%29%2Ad+=+-17\"  d = -5\r\n" );
document.write( " \"a%5B20%5D=3%2B%2819%29%28-5%29\"\r\n" );
document.write( "    a20 = -92\r\n" );
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document.write( "Wish You the Best in your Studies.\r\n" );
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