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how many people must attend the third show so that the average attendance for three shows is 3000? And the other show attendance numbers are 2580, and 2920



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luana
[tex]average=\frac{sum\ of\ attendance}{amount\ of\ shows}\\\\ average=3000\\\\ 3000=\frac{2580+2920+third\ show}{3}\ \ \ |*3\\ 9000=2580+2920+third\ show\\ 9000=5500+third\ show\ \ \ |Subtract\ 5500\\ 3500=third\ show\\\\ \textbf{3500\ people\ must\ attend\ the\ third\ show.} [/tex]

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