document.write( "Question 38761: 3) Use the geometric sequence of numbers 1, 1/3, 1/9 , 1/27… to find the following:
\n" ); document.write( "a) What is r, the ratio between 2 consecutive terms?
\n" ); document.write( "Answer:
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\n" ); document.write( "\n" ); document.write( "b) Using the formula for the sum of the first n terms of a geometric series, what is the sum of the first 10 terms? Carry all calculations to 7 significant figures.
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\n" ); document.write( "\n" ); document.write( "c) Using the formula for the sum of the first n terms of a geometric series, what is the sum of the first 12 terms? Carry all calculations to 7 significant figures.
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\n" ); document.write( "\n" ); document.write( "d) What observation can make about these sums? In particular, what number does it appear that the sum will always be smaller than?
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Algebra.Com's Answer #24254 by Nate(3500)\"\" \"About 
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3) Use the geometric sequence of numbers 1, 1/3, 1/9 , 1/27… to find the following:
\n" ); document.write( "a) What is r, the ratio between 2 consecutive terms?
\n" ); document.write( "Answer:
\n" ); document.write( "Show work in this space.
\n" ); document.write( "To do this, you take the second number and divide that by the first number.
\n" ); document.write( "\"%281%2F3%29%2F1+=+1%2F3\"
\n" ); document.write( "The ratio is (1/3).\r
\n" ); document.write( "\n" ); document.write( "b) Using the formula for the sum of the first n terms of a geometric series, what is the sum of the first 10 terms? Carry all calculations to 7 significant figures.
\n" ); document.write( "Answer:
\n" ); document.write( "Show work in this space.
\n" ); document.write( "\"s+=+%28%28a%29%281-r%5E%28n%29%29%29%2F%281-r%29\"
\n" ); document.write( "\"s+=+%28%281%29%281-%281%2F3%29%5E%2810%29%29%29%2F%281-%281%2F3%29%29\"
\n" ); document.write( "\"s+=+%2859048%2F59049%29%2F%282%2F3%29\"
\n" ); document.write( "\"s+=+29524%2F19683\" about 1.499975
\n" ); document.write( "c) Using the formula for the sum of the first n terms of a geometric series, what is the sum of the first 12 terms? Carry all calculations to 7 significant figures.
\n" ); document.write( "Answer:
\n" ); document.write( "Show work in this space.
\n" ); document.write( "\"s+=+%281-%281%2F3%29%5E%2812%29%29%2F%281-%281%2F3%29%29\"
\n" ); document.write( "\"s+=+%28531440%2F531441%29%2F%282%2F3%29\"
\n" ); document.write( "about 1.499997\r
\n" ); document.write( "\n" ); document.write( "d) What observation can make about these sums? In particular, what number does it appear that the sum will always be smaller than?
\n" ); document.write( "Always smaller than 1.5 it seems. The number will increase very minimal as the number of terms added increases.
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