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Naily [24]
3 years ago
8

Consider the arithmetic sequence 10, 8, 6, 4, ....

Mathematics
2 answers:
Gekata [30.6K]3 years ago
4 0

Answer:

12 - 2n

Step-by-step explanation:

The n th term of an arithmetic sequence is

a_{n} = a₁ + (n - 1)d

where a₁ is the first term and d the common difference

Here a₁ = 10 and d = 8 - 10 = - 2, thus

a_{n} = 10 - 2(n - 1) = 10 - 2n + 2 = 12 - 2n

Triss [41]3 years ago
3 0

Answer:

12-2n

Step-by-step explanation:

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Answer:

Step-by-step explanation:

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3 0
2 years ago
Read 2 more answers
What is the first term for an arithmetic sequence with a12 = 56 and a21=101?
Alenkinab [10]
The first term is -43.

Explanation:

an = a + (n - 1)d

a12 = a + 11d = 56, first equation
a21 = a + 20d = 101, second equation

Subtract the second equation from the first equation, cancelling +a and -a
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Subtitute d into the first equation
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Step-by-step explanation:

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