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Mathematics 11 Online
OpenStudy (anonymous):

Indicate the general rule for this sequence. Find a1 and the common difference. a4 = 18 a7 = 9

OpenStudy (anonymous):

I gave up

OpenStudy (anonymous):

Why??

OpenStudy (anonymous):

By closely looking the sequence will have d = -3 So, a = 24 and d = -3

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