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2 years ago

Find S15 for 1 + 1.5 + 2.25 + 3.375 + …

1 answer:

6 0

By keenly investigating the given above, it is observed that the given is a geometric sequence with first term (a1) equals 1 and common ratio (r) is 1.5. The geometric series can be calculated by the equation,

Sn = a1 x (1 - r^n) / (1 - r)

where n is 15.

Substituting the known values,
Sn = 1 x (1 - 1.5^15) / (1 - 1.5) = 873.78778

Therefore, S15 is approximately equal to 873.79.

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aev [14]

C. 2.3
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3 years ago

Read 2 more answers

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dem82 [27]

Answer:

Step-by-step explanation:

In the given triangle

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3 years ago

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Step-by-step explanation:

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Citrus2011 [14]

Answer:

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3 years ago

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timurjin [86]

Answer:

Step-by-step explanation:

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