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butalik [34]
3 years ago
7

Find the sixth term of the geometric sequence 9, -27, 81, a6

Mathematics
1 answer:
Crank3 years ago
8 0

Answer:

The sixth term of the sequence = <em>-234</em>

Step-by-step explanation:

The formula of a geometric sequence is:

<em>aₙ = a₁ + r⁽ⁿ⁻¹⁾</em>

Where;

aₙ = the term value

n = the term that has to be found out

a₁ = first term in the sequence

r = common ration

Here in this situation:

aₙ = unknown

n = 6

a₁ = 9

r = -3

Therefore the solution would be:

a₆ = 9 + (-3)⁶⁻¹

a₆ = 9 + (-3)⁵

a₆ = 9 + (-243)

a₆ = -234

Therefore <u>the sixth term of the sequence would be: -234</u>

Hope this helps!

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