2 years ago

Which of the following infinite series has a finite sum? Explain your reasoning.

Mathematics

1 answer:

ikadub [295]2 years ago

7 0

Answer:

d. 20+10+5+2.5+...

Step-by-step explanation:

No geometric series with a common ratio of magnitude greater than 1 will have a finite sum. Nor will any arithmetic series.

Those descriptions exclude answer choices a, b, c. Choice d is a geometric series with a common ratio of 1/2, so will have a finite sum. (It is 40.)

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<h3>How to determine the equation of the directrix?</h3>

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