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Maren Daugherty
Mathematics
2 October, 15:30
How do you describe the sequence 7,14,21,28
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Jaxon Brady
2 October, 15:50
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The first term, a is 7.
The next term is increased by adding 7.
The sequence is an Arithmetic Sequence.
The common difference d = 14 - 7 = 21 - 14 = 7
For Arithmetic, an = a + (n - 1) d
The nth term = 7 + (n - 1) 7 = 7 + 7 (n - 1)
= 7 + 7n - 7 = 7n
= 7n
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