Mathematics
Skyybugg
20

What is the 7th term in the sequence below? 3,12,48,192

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(1) Answers
KatriceLaigo

This is a geometric sequence...so we first find the common ratio by dividing the 2nd term by the 1st term. 12/3 = 4...so the common ratio is 4. an = a1 * r^(n-1) n = term to find = 7 a1 = first term = 3 r = common ratio = 4 now we sub a7 = 3 * 4^(7-1) a7 = 3 * 4^6 a7 = 3 * 4096 a7 = 12288 <===

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