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nevsk [136]
2 years ago
14

The last term of an arithmetic sequence is 14 and the ninth term is -1. Find the first four

Mathematics
1 answer:
Olegator [25]2 years ago
8 0

Answer:

13

Step-by-step explanation:

where n is the number of terms, a1 is the first term and an is the last term. The sum of the first n terms of an arithmetic sequence is called an arithmetic series . Example 1: Find the sum of the first 20 terms of the arithmetic series if a1=5 and a20=62 .An arithmetic sequence is a sequence where the difference between any two consecutive terms is a constant. ... As with any recursive formula, the initial term of the sequence must be given. An explicit formula for an arithmetic sequence with common difference d is given by an=a1+d(n−1) a n = a 1 + d ( n − 1 ) .

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DIA [1.3K]
To find your answer you need to do y divided by x.
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Hope this helped!
4 0
3 years ago
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NARA [144]

Answer:

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Step-by-step explanation:

5 0
3 years ago
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Inessa [10]

Answer:

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Katyanochek1 [597]

Answer:

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Step-by-step explanation:

This should help you

8 0
1 year ago
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Answer:

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