roseb1413 roseb1413

14-05-2020
Mathematics

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The sum of an 84-number series is –7,980. What is the sum of the first and last numbers?

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Аноним Аноним

14-05-2020

Answer:

- 190

Step-by-step explanation:

Since the sum of 84 number series is -7980. We have to find the sum of first and last numbers. Since sum of an arithmetic sequence is represented as. S =. (First + last) =. So the total of first and last term is (-190). Option B. -190 is the correct option.

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cristianmunguia2016 cristianmunguia2016

25-02-2021

Answer:

B) -190

Step-by-step explanation:

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