Can someone help me solve for t. Thanks! (.5)^-(t)/(4.5*10^9) * 100 = 80
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Hello jsu03 Originally Posted by jsu03 Can someone help me solve for t. Thanks! (.5)^-(t)/(4.5*10^9) * 100 = 80 I take it that the equation is: So divide both sides by : Take logs (to base ) of both sides: Grandad
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