document.write( "Question 607048: give the first four terms of the arithemtic sequence for which a1=-22 and r=5 \n" ); document.write( "

Algebra.Com's Answer #382427 by KMST(5328) $\"\"$ $\"About$

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The letter r is commonly used for the common ratio in a geometric sequence.
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\n" ); document.write( "In arithmetic sequences, each term is equal to the previous one plus a common difference, that is often called \"d\". So if you really meant an arithmetic sequence starting at -22, with a common difference of 5, then the second term would be
\n" ); document.write( " $\"a%5B2%5D=-22%2B5=-17\"$ ,
\n" ); document.write( "the third term would be $\"a%5B3%5D=-17%2B5=-12\"$ and the fourth term would be
\n" ); document.write( " $\"a%5B4%5D=-12%2B5=-7\"$ . So along with $\"a%5B1%5D=-22\"$ , we know the first four terms to be
\n" ); document.write( "-22, -17, -12, -7.
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\n" ); document.write( "If it was a geometric sequence with common ratio $\"r=5\"$ , the terms would be
\n" ); document.write( " $\"a%5B2%5D=-22%2A5=-110\"$ , $\"a%5B3%5D=-110%2A5=-550\"$ , and $\"a%5B4%5D=-550%2A5=-2750\"$ . \n" ); document.write( "

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