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2 years ago

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What the answer plz help

1 answer:

ratelena [41]2 years ago

4 0

20 = 40e^-0.1446t
e^-0.1446t = 0.5

t = ln 0.5 / -0.1446
t = 4.8 days

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Step-by-step explanation:

Step 1

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Step 2.

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