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2 answers:
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Answer:
- The value of a = 5.8
- The value of b = 4.4
Step-by-step explanation:
Given
7.2, a, b, 3 are in A.P
as
a, b, 3 are also in A.P
Putting
Now, plugging in
Therefore,
- The value of a = 5.8
- The value of b = 4.4
Answer:
Step-by-step explanation:
The nth term of the given arithmetic sequence is
The first term of this series is:
The last term of this series is when
The sum of the first n terms of an arithmetic series when the first an last term is known is given by:
Where a=5 is the first term and l=27 is the last term.