3 years ago

X - 150 = y x - y = 50 x + y = 180 x = y + 60 what is x?

1 answer:

4 0

It is y=x-150 because x−150+150=y+150

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ozzi

Answer:

The amount present in a sample of 401 grams after 25 years is $180\ g$

Step-by-step explanation:

we have

A(t) -----> the amount, in grams, of polonium 210 present in a given sample

t -----> the time in years

$A(t)=401e^{-0.032t}$

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$A(25)=401e^{-0.032(25)}$

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3 years ago