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kogti [31]
3 years ago
6

-2 2/3, -5 1/3, -10 2/3, -21 1/3, -42 2/3. which formula can be used to describe the sequence?

Mathematics
1 answer:
Stella [2.4K]3 years ago
8 0
Your sequence appears to be geometric with a common ratio of 2. It can be described by
  a(n) = (-2 2/3)·2^(n-1)

_____
This can be written in a number of other forms, including
  a(n) = (-8/3)·2^(n-1)
  a(n) = (-1/3)·2^(n+2)
  a(n) = (-4/3)·2^n
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The first two numbers in a sequence h are h(1) = 2 and h(2) = 6.
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Step-by-step explanation:

Given the first two numbers of a sequence as 2, 6...

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a is the first term = 2

d is the common difference = 4

n is the number if terms

Substituting the given values in the formula.

Nth term Tn = 2+(n-1)4

Tn = 2+4n-4

Tn = 4n-4+2

Tn = 4n-2

2) If the sequence us a geometric sequence

Nth term of the sequence Tn = ar^(n-1)

r is the common ratio

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2 years ago
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Answer:

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Step-by-step explanation:

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Taking the square root of each side

sqrt(x^2) = sqrt(196)

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