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What is the 14th term in an arethmetic sequence in which the first term is 100 and the common difference is -4?
Use the following formula:
an = a1 + (n - 1)d, where
a1 = the first term
n = the n th term (general term)
d = common difference (which is constant between terms)
Since we need to find the 14 th term, we can write:
a1 = 100
n = 14
d = -4
an = a1 + (n - 1)d
a14 = 100 + (14 - 1)(-4)
a14 = 100 + (13)(-4)
a14 = 100 - 52
a14 = 48
Thus, the 14 th term is 48.
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What is the 14th term in an arithmetic sequence in which the first term is 100 and the common difference is -4?
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What is the 14th term in an arithmetic sequence in which the first term is 100 and the common difference is -4?
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Explain how to find the common difference of an arithmetic sequence?
From any term after the first, subtract the preceding term.
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