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babymother [125]
3 years ago
11

What is the formula for the following arithmetic sequence?

Mathematics
2 answers:
Dmitry_Shevchenko [17]3 years ago
3 0

an = 6 + 12( n - 1) is the answer

belka [17]3 years ago
3 0

Answer:

Correct answer: First answer - aₙ = 12 + (-6)(n - 1)

Step-by-step explanation:

Given: arithmetic sequence 12, 6 , 0 , -6, ......

First term       a₁ = 12

Second term a₂ = 6

Third term     a₃ = 0

we will get the difference

d = a₂ - a₁ = a₃ - a₂ = 6 - 12 = 0 - 6 = - 6

d = - 6

a₂ = a₁ + d

a₃ = a₂ + d = a₁ + 2 d

a₄ = a₃ + d = a₁ + 3 d

......................................

aₙ = a₁ + (n -1) d

aₙ = 12 + (n -1) (-6) = 12 + (-6) (n -1)

aₙ = 12 + (-6) (n -1)

God is with you!!!

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