document.write( "Question 1011296: the end term of the sequence is 9x-z. the third term is 25 so what is the value of z? (the description is (a+n-1d) ) \n" ); document.write( "
Algebra.Com's Answer #626918 by josgarithmetic(39618)\"\" \"About 
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n is for the index of a term.
\n" ); document.write( "First term is \"a%5B1%5D%2B%281-1%29%2Ad=a%5B1%5D%2B0%2Ad=a%5B1%5D\".
\n" ); document.write( "Term at n=3 is \"a%5B1%5D%2B%283-1%29%2Ad=a%5B1%5D%2B2d\".
\n" ); document.write( "The index for your last term of the sequence is unknown n, so it is \"a%5B1%5D%2B%28n-1%29d\", and is given as the expression;
\n" ); document.write( "\"highlight_green%289x-z=a%5B1%5D%2B%28n-1%29d%29\", and you do not know x, \"a%5B1%5D\", n, d.\r
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\n" ); document.write( "\n" ); document.write( "You want to find the value for z, yet the other needed quantities for x, \"a%5B1%5D\", n, and d are still unknown.\r
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\n" ); document.write( "\n" ); document.write( "The term for index of 3 is \"a%5B1%5D%2B2d=25\". You can use this to find a formula for either \"a%5B1%5D\" OR for d. You will still have three unknown, undetermined variables. Do you understand the difficulty here?\r
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\n" ); document.write( "\n" ); document.write( "What is the entire problem description and question?
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