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Mathematics, 21.09.2021 18:50 bapehoodboi

The formula for summing an arithmetic progression is S=0.5n(2a + (n - 1)d). Il a = 8, n = 20 and S = 255, find d.

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The formula for summing an arithmetic progression is S=0.5n(2a + (n - 1)d). Il a = 8, n = 20 and S...

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