Physics, asked by palakyadav482008, 28 days ago

The 5th term of an arithmetic sequence
is 5 and the sum of the first 5 terms is
55. What is its first term
(a) 15 (b) 16 (c) 17 (d) 18

Answers

Answered by XXX7844
1

Answer:

Answer:

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Explanation:

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Question

The 5th term of an arithmetic sequence

is 5 and the sum of the first 5 terms is

55. What is its first term

(a) 15 (b

Answered by gvm299750
2

Explanation:

a+a+d+a+2d+a+3d+a+4d=55

a+4d=5

5a+10d=55 1)

a+4d=5. 2)

solving Eqn 1 and 2

-10d=50

d= -5

a+4(-5)=5

a-20=5

a=25

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