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Nuetrik [128]
3 years ago
14

What is the sum of the geometric sequence 1, 4, 16, ... if there are 8 terms? (6 points)

Mathematics
2 answers:
Gnoma [55]3 years ago
8 0
That pero son is correct, it is, 21,845
timama [110]3 years ago
4 0

Answer:

21,845

Step-by-step explanation:

The sum of geometric sequence:

S n = a 1 * ( q^n - 1 ) / ( q - 1 )

where:  a 1 = 1,

q = a 2 : a 1 = 4 : 1 = 4

S 8 = 1 * ( 4^(8) - 1 ) / ( 4 - 1 ) =

= ( 65,536 - 1 ) / ( 4 - 1 ) = 65,535 / 3 = 21,845

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Step-by-step explanation:

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3 years ago
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pochemuha

Answer:

y = -2

Step-by-step explanation:

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3 years ago
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Step-by-step explanation:

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7 0
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Step-by-step explanation:

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