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02-06-2017
Mathematics

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7.25t -(t x t) = 12.75 what is t?

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Аноним Аноним

02-06-2017

7.25t -(t x t) = 12.75
7.25t - t^2= 12.75
t^2 - 7.25t + 12.75 = 0
(t - 3)(t - 4.25) = 0
t - 3 = 0; t = 3
t - 4.25 = 0 ; t = 4.25
answer
t = 4.25 and t = 3

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