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PLEASE HELP!!! Find the 29th of the following sequence. 12 14 16 18,.... A. 68 B. 70 C. 64 D. 66
asked
Dec 11, 2019
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PLEASE HELP!!!
Find the 29th of the following sequence.
12 14 16 18,....
A. 68
B. 70
C. 64
D. 66
Mathematics
middle-school
Tobia Zambon
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Arithmetic sequence:
a₁ = 12; a₂ = 14; a₃ = 16; a₄ = 18... a₂₉ = ?
the common difference:
d = a₂ - a₁ = 14 - 12 = 2
29th term:
a₂₉ = a₁ + d(n-1)
= 12 + 2(29-1)
= 12 + 2*28
= 12 + 56
= 68
Answer is A.68
Arlette
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Dec 12, 2019
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Arlette
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Hello!
The pattern is add 2. The 1st number is 12.
The 29th term is equal to: (28 × 2) + 12
29 × 2 = 56
Add 12 to 56
56 + 12 = 68
Sabuncu
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Dec 16, 2019
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Sabuncu
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