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What is the 9th term of the geometric sequence where a1 = 7 and a6 = 7,168?
 one year ago
 one year ago
What is the 9th term of the geometric sequence where a1 = 7 and a6 = 7,168?
 one year ago
 one year ago

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Sorry I can't understand the given ?!
 one year ago

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a1 = 7 what else is given to solve this problem ? value of a6 ?
 one year ago

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so the GS (a, ar , ar^2 ,...) so a = a1 = 7 a6 = \[ar ^{5}\] 7168=7 * r ^5 r=4 a9 = ar^8 = (7)(4^8)= 458752
 one year ago
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