anonymous
  • anonymous
Write the explicit formula that represents the geometric sequence -2, 8, -32, 128
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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SolomonZelman
  • SolomonZelman
r=-4 (u mulitply times -4 each time). \(a_1\)=-2 (that is your first term). --------------------------------- The general formula for geometirc sequence is: \(a_n\) = \(a_1\) • \(\rm r\)\(^{(n-1)}\) plug in the common ratio \(\rm r\) and the first term \(a_1\), and there is your answer.
anonymous
  • anonymous
I'm sorry I'm still lost
SolomonZelman
  • SolomonZelman
what exactly do you have a problem with?

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anonymous
  • anonymous
so my answer is a=-2*-4 (n-1)
anonymous
  • anonymous
please help

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