the 7th term of the arithmetic sequence 2,4,6,8,...is
a.18 b.16 c.14 d.12
Answers
Answered by
2
Answer:
d = 4-2= 2
a = 2
a7 = a + 6d
= 2 + 6×2
= 2+ 12
= 14
(c) 14
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Answered by
4
The 7th term of an given A.P. is 14
Step-by-step explanation:
GIVEN
a = t1 = 2 , t2 = 4 , t3 = 6 , t4 = 8
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To Find
The 7th term of an given A.P.
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To find the 7th term of an given A.P.
we need to find the Common Difference (D) first
Common Difference (D) = t2 - t1
Common Difference (D) = 4 - 2
Common Difference (D) = 2
Common Difference (D) = 2
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We know that,
an = a1 + ( n - 1 ) × d
a7 = 2 + ( 7 - 1 ) × 2
a7 = 2 + 6 × 2
a7 = 2 + 12
a7 = 14
a7 = 14
The 7th term of an given A.P. is 14
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