document.write( "Question 6261: please help me solve this question....it says:
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document.write( "a sequance is a special set of numbers. for each of the sequences below:
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document.write( "A) write in words a rule to get each number from its number position in the sequence.
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document.write( "B) write the rule in B in symbols, using n for the number position in the sequence.
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document.write( "the numbers are: a) 3,5,7,9,11 and b) 20,17,14,11 \n" );
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Algebra.Com's Answer #3343 by theflu(4)![]() ![]() ![]() You can put this solution on YOUR website! A) a)add 2 each time to get the next number \n" ); document.write( " b)subract 3 each time to get the next number\r \n" ); document.write( "\n" ); document.write( "B) a)tn = a + (n - 1)d \n" ); document.write( "in your case: \n" ); document.write( "a = 3 (\"a\" means first number) \n" ); document.write( "d = 2 (\"d\" means common difference)\r \n" ); document.write( "\n" ); document.write( "So your formula becomes: tn = 3 + (n - 1)(2) \n" ); document.write( "simplify: tn = 3 + 2n - 2 \n" ); document.write( "collect liketerms: tn = 2n + 1 <==answer\r \n" ); document.write( "\n" ); document.write( "to test the answer: try the fifth number, which is suppose to be 11: \n" ); document.write( "t5 = 2(5) + 1 = 11\r \n" ); document.write( "\n" ); document.write( "B) b)try yourself (hint: a = 20; d = -3) \n" ); document.write( " |