if 8x+7,15,2x-7are three consecutive terms of an arithmetic sequence.find fourth term?
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Answer:
fourth term of this Ap is 1 - 6x
Step-by-step explanation:
Ap 8x + 7 , 15 , 2x - 7 , a4
a = 8x +7
d = a2 - a1
= 15 - 8x - 7
= 8 - 8x
fourth term
a4 = a3 + d
= 2x - 7 + 8 - 8x
= 1 - 6x Ans.
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