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Nonamiya [84]
3 years ago
5

I need help with 47 and 48 please please!

Mathematics
1 answer:
sergey [27]3 years ago
7 0
48. B and 47 is out of c and b
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Answer:

This is a radioactive decay / half-life problem.

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k = .0001  (that value should be negative)

Nt = No * e^ (k*t)

You need to solve that equation for "time" (equation attached)

time = natural log (Ending amount / Starting Amount) / k

time = natural log (57% / 100%) / -.0001

time = ln (.57) / -.0001

time = -.56211891815 / -.0001

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These problems are quite complicated but I think I know this pretty well.

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Step-by-step explanation:

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3 years ago
In the given table we note that there are six clear subintervals: [0, 0.5], [0.5, 1.0], [1.0, 1.5], [1.5, 2.0], [2.0, 2.5], and
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The width is 0.5.

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4 0
2 years ago
You own a rectangular home lot that is 46,200 square feet in size. You get a quote of $10 per foot. If your lot is 220ft long an
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I need help! Please show all the steps and work! :)
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I don’t know tskskssososksosososkxx
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