Find the 15th, 18th, and, 31st terms in the sequence A (n) = 2 + (n-1) (-2)

Question

Mathematics

Owen Roberts

15 October, 11:29

Find the 15th, 18th, and, 31st terms in the sequence A (n) = 2 + (n-1) (-2)

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Answers (1)

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Giovanny · Answer 1

15th term

Step-by-step explanation:

A (n) = 2 + (n-1) (-2)

A (15) = 2 + (15-1) (-2)

A (15) = 2 + (14) (-2)

A (15) = 2 + (-28)

A (15) = 2-28

A (15) = -26

18th term

A (n) = 2 + (n-1) (-2)

A (18) = 2 + (18-1) (-2)

A (18) = 2 + (17) (-2)

A (18) = 2 + (-34)

A (18) = 2-34

A (18) = -32

31st term

A (n) = 2 + (n-1) (-2)

A (31) = 2 + (31-1) (-2)

A (31) = 2 + (30) (-2)

A (31) = 2 + (-60)

A (31) = 2-60

A (31) = -58