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o-na [289]
2 years ago
15

2,8, 32, 128 Arithmetic, Geometric, or neither? Explicit: _ Geometric Recursive:

Mathematics
2 answers:
m_a_m_a [10]2 years ago
4 0

Answer:

Geometric

Step-by-step explanation:

\frac{8}{2}  = 4 \\  \\   \frac{32}{8}  = 4 \\  \\   \frac{128}{32}  = 4 \\  \\

Here, common ratio (r = 4) is same, therefore given sequence is a geometric progression.

Recursive formula is given as:

t_n= ar^{n-1}\\\\\therefore  t_n= 2\times 4^{n-1}\\\\\therefore  t_n= 2\times 2 ^{2(n-1)}\\\\\therefore  t_n= 2\times 2 ^{2n-2}\\\\\therefore  t_n= 2 ^{2n-2+1}\\\\\therefore  t_n= 2 ^{2n-1}

slavikrds [6]2 years ago
3 0

the sequense between them are times4

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