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Determine the value of P if $P = \sum_{k=1}^{13} 3^{k - 5}$
in Grade 12 Maths by Diamond (37.9k points) | 35 views

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T1=3^-4 = 1/81



common ratio= 3,

hence geometric sum= a(r^n -1)/(r-1)

                                  = (1/81)(3^13 -1)/(3-1)

                                 = 9 841.49
by Silver Status (28.5k points)

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