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d1i1m1o1n [39]
2 years ago
13

A certain radioactive isotope decays at a rate of 2% per 100 years. If t represents the amount of the isotope left then the equa

tion for the situation is
Mathematics
2 answers:
hjlf2 years ago
8 0
A certain isotope decays at a rate of 2%per 100 years. If t represent the time in years and y represent the amount of the isotope left then the equation for the situation is y=y0e^-0.0002t . In how many years will there be 86% of the isotope left?
.
Let x = initial amount
then our formula is
.86x = xe^(-0.0002t)
.
Notice, if we divide both sides by x, we eliminate our unknown:
.86 = e^(-0.0002t)
Solving for x, we take the ln of both sides:
ln(.86) = -0.0002t
ln(.86)/(-0.0002) = t
754.114 years = t
Amiraneli [1.4K]2 years ago
3 0

Answer:

y=y0e^-0.0002t

Step-by-step explanation:

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3 0
3 years ago
A house purchased for $230,000 has lost 6% of its value each year for the last four years. What is the house worth now?
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3 0
2 years ago
Roger has two golden retrievers, sadie and buddy, buddy weighs 14 pounds more than sadie, if their total wight is 136 pounds, ho
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Step-by-step explanation:


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