Mathematics 1 Deneme Sınavı Sorusu #1232181

Yanıt Açıklaması:

Since 20 percent is lost, 80 percent is remaining at the end of 10 years. Thus we can write:

0.8Q=Q.e^10k

ln0.8/10=k=-0.0223

So we can find the half life by:

0.5Q=Q.e-^0.0223t

ln0.5=-0.0223t, then t=31.06 years

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