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Korolek [52]
3 years ago
7

Is the sequence 5,9,15 an arithmethic sequence explain ?

Mathematics
1 answer:
german3 years ago
8 0

If a, b, c is an arithmetic sequence then a + c = 2b

a = 5, b = 9, c = 15

subtitute

a + c = 5 + 15 = 20

2b = 2 · 9 = 18

20 ≠ 18

Answer: The sequence 5, 9, 15 is not an arithmetic sequence.

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