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Viefleur [7K]
4 years ago
7

Grandma bakes the world’s best and favorite cookies. Grandma’s cookies have a half life of 2 hours. One day, Grandma baked a lot

of cookies. If 2 days and 6 hours later, 2 cookies still remain, how many cookies did Grandma bake?
Social Studies
1 answer:
Talja [164]4 years ago
8 0

2 = 36(18)t/2

1/18 = (18)t/2

ln(1/18) = (t/2)ln18

2ln(1/18) = tln18

t = 2ln(1/18)/ln18

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