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3 years ago

Find the sum of all 11 terms of an AP whose middlemost terms is 30?

Mathematics

1 answer:

Bond [772]3 years ago

6 0

Let the difference between consecutive terms be D. If the middle term is 30, then the term before it is 30-D, and the term after it is 30+D. So the sum of these three terms would be (30-D) + 30 + (30+D) = 3*30.

Extending this sum to include all 11 terms centered around 30, we see that any addition of D is canceled by a balanced subtraction, leaving you with 11 copies of 30. So the value of the sum is 11*30 = 330.

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Answer:

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3 years ago

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Answer:

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3 years ago

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Trava [24]

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2 years ago

If f(x)=1/2x-2 what is f(14)

MissTica

Answer:

Hi there!

The correct answer is: 5

Step-by-step explanation:

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3 years ago

All first-year students at Red State University must take calculus, English composition, or both. If half of the 2,400 first-yea

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Answer:

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Step-by-step explanation:

Consider the provided information.

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Hence, the correct option is D) 1,600.

5 0

3 years ago