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VLD [36.1K]
3 years ago
6

Explain the reasoning to your answer. Will mark you the Brainliest

Mathematics
2 answers:
musickatia [10]3 years ago
4 0
N should equal 6.Everything added up to 6 with my calculations
guajiro [1.7K]3 years ago
3 0

Answer:

6

Step-by-step explanation:

S_{n} = \frac{a(1-r^{n}) }{1-r}

63 = -3(1 - -2^{n}) / (1- -2)

63 = (-3 + 6^{n})/3

63 = -1 + 2^{n}

64 = 2^{n}

n = 6

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