8. The first three terms of an arithmetic series are (4x - 5), 3x and (x + 13). (a) Find the value of x. (b) Find the sum of the first 40 terms of the sequence.
Mathématiques
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Question
8. The first three terms of an arithmetic series are (4x - 5), 3x and (x + 13).
(a) Find the value of x.
(b) Find the sum of the first 40 terms of the sequence.
(a) Find the value of x.
(b) Find the sum of the first 40 terms of the sequence.