2 years ago

Given the following geometric sequence, find the 12th term: {2, -4, 8, ...}.

2 answers:

8 0

Use formula: an = a1 * r^(n-1)
a1 = 2, r = -2
a12 = 2 * -2^(12-1)
a12 = 2 * -2^11
a12 = 2 * -2048
a12 = -4096

Solution: -4096

Ainat [17]2 years ago

3 0

Answer: -4096

Step-by-step explanation:

I just did the lesson

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