For the following geometric sequence find the explicit formula. {12, -6, 3, ...]
1 answer:
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Answer:
<h2>x = 3</h2>Step-by-step explanation:
Look at the picture.
We have the triangles 45° - 45° - 90° and 30° - 60° - 90°.
The sides of those triangles are in ratio:
1 : 1 : √2 and 1 : √3 : 2
Therefore
If AC = 6√2 then AB = BC = 6
If BC = 6 then x = 6 : 2 = 3
Did you mean x^2? Then, the answer is x = +/- , which is +/- 25.