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) 16 (c) 17 (d) 18
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Answer 1

Answer:

Answer:

WRITING magine your school organised a tree plantation drive in the neighborhood recently. Write a brief report on the drive. include the following points in our report- When and where was the tree plantation drive held? - Who participated in the drive? • What was done by the participants?What was the main objective of the drive? ​

Explanation:

ADD YOUR ANSWER

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

Answer 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