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Camden Cisneros
Mathematics
3 December, 22:25
Find the nTH term of this sequence: 15, 12, 9, 6
+2
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Matias Arroyo
3 December, 22:32
0
-3n + 18
Step-by-step explanation:
an = dn + (a - d)
The difference is - 3.
The first term is 15.
an = - 3n + (15 - (-3))
an = - 3n + 15 + 3
an = - 3n + 18
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Armando Weber
3 December, 22:38
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aₙ = 18 - 3n
Step-by-step explanation:
15, 12, 9, 6
Given AP with first term = 15 and common difference = - 3
aₙ=a₁ + (n-1) d = 15 + (n-1) * (-3) = 15 - 3n+3 = 18-3n
aₙ = 18 - 3n
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