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An arithmetic progression has the first term as a and common difference as d (i) Write down the third, ninth and twenty fifth term of the...

An arithmetic progression has the first term as a and common difference as d
(i) Write down the third, ninth and twenty fifth term of the progression
(ii) The arithmetic progression above is such that it is increasing and the third, ninth and twenty fifth terms form the first three consecutive terms e.g. a geometric progression. If the sum of the seventh term and twice the sixth term of the A.P is 78.Calculte the first term and the common difference of A.P.

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sharon kalunda answered the question on August 7, 2019 at 07:45

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