document.write( "Question 78348: Use the geometric sequence of numbers 1, 3, 9, 27, … to find the following:
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Algebra.Com's Answer #56250 by rmromero(383)\"\" \"About 
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document.write( "Use the geometric sequence of numbers 1, 3, 9, 27, … to find the following:
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document.write( "a) 	What is r, the ratio between 2 consecutive terms? 
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document.write( "                 a[k+1]
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document.write( "           r =  ________
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document.write( "                  a[k]\r
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document.write( "                  3              9
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document.write( "             =  _____  = 3,    _____  = 3 , hence r = 3
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document.write( "                  1              3\r
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document.write( "b) 	Using the formula for the nth term of a geometric sequence, what is the 10th term?\r
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document.write( "            \"a%5Bn%5D\" = \"a%5B1%5D\"\"r%5E%28n-1%29\"
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document.write( "             n = 10, r = 3, \"a%5B1%5D\"= 1
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document.write( "            \"a%5B10%5D\" = \"1+%283%5E%2810-1%29%29\"
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document.write( "                       = 1 (3^9)
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document.write( "                       = 19683\r
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document.write( "c) 	Using the formula for the sum of a geometric sequence, what is the sum of the first 10 terms? \r
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document.write( "                    \"a%5B1%5D\"(\"r%5En+-+1\")
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document.write( "     \"s%5Bn%5D\" =  _____________
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document.write( "                     r - 1
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document.write( "Where r = 3, n = 10, \"a%5B1%5D\" = 1\r
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document.write( "                    1 (\"3%5E10+-+1\")
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document.write( "     \"s%5B10%5D\" =  _____________
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document.write( "                       3 - 1
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document.write( "                 
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document.write( "                   1 (59049 - 1)
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document.write( "              =  ________________
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document.write( "                       2\r
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document.write( "                  59048
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document.write( "              =  _________
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document.write( "                    2\r
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document.write( "              =   29524 \n" );
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