Question

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

A) -531441

B) 1594323

C) -4782969

D) 177147



Answer and I will give you brainiliest
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Answer 1

• B) 1594323

Explanation:

Given GP

• -9, 27, -81, ...

To find

• 12th term

Solution

nth term formula

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

We have

• a₁ = -9
• r = 27/-9 = -81/27 = -3

Find a₁₂

• a₁₂ = (-9)*(-3)¹¹ = 1594323

Correct choice is B