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PSYCHO15rus [73]
2 years ago
8

Write an explicit formula for an, the n^th term of the sequence 22, 20, 18, ....

Mathematics
1 answer:
Serjik [45]2 years ago
4 0

Answer:

 a_n=a+(n-1)d

Step-by-step explanation:

The given sequence is 22, 20, 18, ...

We need to find the explicit formula for an.

First term is 22

Second term = 20

Third term = 18

We can write the formula as :

a_n=a+(n-1)d

Where

a is 22

d is common difference = 20-22 = -2

Forth term will be :

a_4=22+(4-1)(-2)\\\\=22-6\\\\=16

Hence, the formula is a_n=a+(n-1)d.

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