2 years ago

What is the 12th term in the geometric sequence -9,27,-81...?

Mathematics

1 answer:

AnnyKZ [126]2 years ago

4 0

Answer:

B) 1594323

Step-by-step explanation:

<h3>Given GP</h3>

-9, 27, -81, ...

12th term

<h3>Solution</h3>

<u>nth term formula</u>

aₙ = a₁rⁿ⁻¹, where r- common ratio, n- number of the term

a₁ = -9
r = 27/-9 = -81/27 = -3

a₁₂ = (-9)*(-3)¹¹ = 1594323

Correct choice is B

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