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The common ratio in a geometric series is 0.50, and the first term is 256. find the first 6 terms in the series.

Im pretty confused on the equation to solve this... a hand please?

User JaAnTr
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2 Answers

3 votes

Final answer:

To find the first 6 terms in a geometric series, multiply the first term by the common ratio raised to the power of n-1.

Step-by-step explanation:

To find the first 6 terms in a geometric series, we need to multiply the first term by the common ratio raised to the power of n-1, where n is the term number. In this case, the first term is 256 and the common ratio is 0.50. So the first 6 terms would be:

  1. 256
  2. 256 * 0.50 = 128
  3. 128 * 0.50 = 64
  4. 64 * 0.50 = 32
  5. 32 * 0.50 = 16
  6. 16 * 0.50 = 8

User Igor Kustov
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8.3k points
2 votes

Answer:

256,128,64,32,16,8

Step-by-step explanation:

Given the common ratio(r) = 0.5 and the first term (a)=256

We know that the geometric series with the first term as a and the common ratio as r is


a,ar^(1) ,ar^(2) ,ar^(3) .....


T_(n)=ar^(n-1)


T_(1)=ar^(0)=a=256\\T_(2)=ar^(1)=a* r=256* 0.5=128\\T_(3)=ar^(2)=a* r^(2)=256* 0.5^(2)=64\\T_(4)=ar^(3)=a* r^(3)=256* 0.5^(3)=32\\ T_(5)=ar^(4)=a* r^4=256* 0.5^4 =16\\T_(6)=ar^(5)=a* r^5 =256* 0.5^5=8

User Zakher Masri
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