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melomori [17]
3 years ago
9

Find a12 in the sequence -1, -3, -9, -27, ..

Mathematics
1 answer:
Molodets [167]3 years ago
4 0

Answer:

-177147

Step-by-step explanation:

Geometric Sequence

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From the picture, we can see that ΔLSP and ΔLRN are similar, so corresponding sides are proportionate:


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