hrcatena
23.07.2019 •
Mathematics
Greer created a sequence that begins with the number 5. each term after the first is 4.1 times the amount of the preceding term. which formula should greer use to find the sum of the first 23 terms of her sequence? a.) 23(90.2+5) / 2 b.) 4.1(90.2+5) / 2 c.) 5(1-4.1^23) / 1-4.1 d.) 4.1(1-5^23) / 1-5
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Ответ:
we are given
first term is 5
Each term after the first is 4.1 times the amount of the preceding term
so, this is geometric sequence
now, we can find common ratio
total number of terms is 23
so,
now, we can use geometric sum formula
now, we can plug values
and we get
we can also write it as
so, option-C.........Answer
Ответ:
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Step-by-step explanation:
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