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-8

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sum of n terms of an AP with first term a and common difference d is given by:

Σ = ½n(2a + (n-1)d)

→ sum = ½ × 10 × (2 × -10 + (10 - 1) × -2) = −190

Q: What are the first ten terms of a sequence whose first term is -10 and whose common difference is -2.?

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It is the "common difference".It is the "common difference".It is the "common difference".It is the "common difference".

If the terms get bigger as you go along, the common difference is positive. If they get smaller, the common difference is negative and if they stay the same then the common difference is 0.

From the information given, all that can be said is that it will be a negative number.

It's technically called an arithmetic sequence

45, 39, 33, 27, 21, ...

Related questions

arithmetic sequence

It is the "common difference".It is the "common difference".It is the "common difference".It is the "common difference".

6

An arithmetic sequence.

29

The sum of the first 12 terms of an arithmetic sequence is: sum = (n/2)(2a + (n - 1)d) = (12/2)(2a + (12 - 1)d) = 6(2a + 11d) = 12a + 66d where a is the first term and d is the common difference.

You subtract any two adjacent numbers in the sequence. For example, in the sequence (1, 4, 7, 10, ...), you can subtract 4 - 1, or 7 - 4, or 10 - 7; in any case you will get 3, which is the common difference.

A quadratic sequence is when the difference between two terms changes each step. To find the formula for a quadratic sequence, one must first find the difference between the consecutive terms. Then a second difference must be found by finding the difference between the first consecutive differences.

If the terms get bigger as you go along, the common difference is positive. If they get smaller, the common difference is negative and if they stay the same then the common difference is 0.

1 2 3 4 5 6 7 8 9 10 11 12 The common difference between consecutive terms is 1.

From the information given, all that can be said is that it will be a negative number.

It's technically called an arithmetic sequence