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What is the first term of a sequence if the second term is 15a and the third term is 5?
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45a² 3a 2/3 None of these
45a^2
difference between terms is 3a
To get from 15a to 5, you must divide by 3a.
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sure you do
So to get the first term, you would multiply 15a by 3a?
Yes.
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