SOLUTION: The sum of first 3 terms is 37/8 and the sum of first 6 terms is 3367/512.find the first term and common ratio.
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Question 1148035: The sum of first 3 terms is 37/8 and the sum of first 6 terms is 3367/512.find the first term and common ratio.
Answer by greenestamps(13203) (Show Source): You can put this solution on YOUR website!
The sum of the first three terms is 37/8:
The sum of the first six terms is 3367/512:
The sum of terms 4 to 6 is the difference, 3367/512-37/8:
The sum of terms 4 to 6 is the sum of the first three terms, multiplied by r^3. That is,
The sum of the first three terms is 37/8:
ANSWERS: first term 2; common ratio 3/4
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