Question

tá errado ali o do carinha!!!!!!!!!!!!!!

1,25= 5 . 2^(-t/5400)

2^(-t/5400) = 1,25/5

2^(-t/5400) = 0,25-------------------(0,25=1/4)

2^(-t/5400) = 1/4

2^(-t/5400) = 1/2²

2^(-t/5400) = 2^-2

-t/5400 = -2 (-1)

t/5400=2
t=5400.2
t= 10800 anos

Answer 1

Corretíssimo sua resposta