A sample of a radioactive substance decayed to 92% of its original amount after a year. (Round your answers to two decimal places.)   (b) How long would it take the sample to decay to 30% of its original amount?

Q: A scientist puts 250 grams of radioactive radium having a half-life of 1690 years into a concrete…

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Q: If $6000 is invested at 3% compounded continuously, what is the amount after 8 years? The amount…

A: Answer  is   7625

Q: How much would you need to deposit in a bank account paying 4% annual interest compounded…

A: Initial amount = P=? Final amount=A=26000 Interest rate= r= 4%= 0.04  Time= t=15 years

Q: Suppose a sample of a certain substance decayed to 77.4% of its original amount after 300 days.…

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Q: How much should be invested now at an interest rate of 5.5% per year, compounded continuously, to…

A: We can find the answer as below.

Q: How long will it take 700 milligrams of silicon-31 to decay into 400 milligrams? (Round your answer…

A:

Q: WThe half-life of carbon-14 is 5600 years. If a piece of charcoal made from the wood of a tree shows…

A: Given : The half life of carbon-14 is 5600 years. If a piece of charcoal made from the wood of a…

Q: A scientist puts 200 grams of radioactive radium having a half-life of 1690 years into a concrete…

A: Radioactive decay

Q: Suppose a sample of a certain substance decayed to 69.2% of its original amount after 300 days. What…

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Q: If half a certain amount of radium decays in 1600 years. What percentage of the original amount will…

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Q: A sample of bacteria is decaying according to a half-life model. If the sample begins with 800…

A: Given: t=0  ,A0=800 t=14  ,A=160 t=?  ,A=40

Q: 6. A sample of tritum-3 decayed to 94.5% of its original amount after a year. (a) What is the…

A: A sample of tritum-3 decayed to 94.5% of its original amount after a year. Note:   Multiple…

Q: A sample of tritium-3 decayed to 94.5% of its originalamount after a year.(a) What is the half-life…

A: A sample of tritium-3 decayed to 94.5% of its original amount after a year. We have to find (a) What…

Q: Suppose that a chemical reaction proceeds according to the law of growth and decay. If half the…

A:

Q: At current growth rates, the earth’s population is doubling about every 69 years. If this growth…

A: Number  of years - To calculate

Q: How long does it take for $2150 to double if it is invested at 8.5%   compounded continuously?…

A:

Q: How long will it take money to double if it is invested at (A) 13% compounded continuously? (B) 15%…

A:

Q: How many years will it take $1,000 to grow to $1,900 if it is invested at 3.50% compounded…

A:

Q: 10. Cobalt-60 has a half-life of 5.42 years (a) Find the mass that remains from a 100-mg sample…

A: The given half life t1/2= 5.42 years

Q: A sample of radioactive material decayed to half of its original amount in 4 years. How long did it…

A: Given: A sample of radioactive material decayed to half of its original amount in 4 years To…

Q: At the beginning of an experiment, a scientist has 216 grams of radioactive goo. After 195 minutes,…

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Q: How many years will it take $2,000 to grow to $3,300 if it is invested at 2.50% compounded​…

A:

Q: For the exponential decay function =y300(0.9)x (a)What is the initial amount of the quantity…

A: Given y = 300(0.9)x initially x = 0 Therefore y (0) = 300(0.9)0 y(0) = 300x1 y(0) = 300

Q: A sample of bacteria is decaying according to a half - life model . If the sample begins with 500…

A:

Q: A sample of a newly discovered element, West Virginium, has a half-life of 295 years. How long will…

A: We have to find out t

Q: How long does it take for 90% of a given quantity of the radioactive element cobalt-60 to decay,…

A: Radioactive element decay rate.

Q: 12) How long does it take $1000 to double if it is invested at 5% compounded continuously?

A:

Q: In one experiment study, the growth of a certain insects is increasing at a rate proportional to the…

A: Given: In one experiment study, the growth of a certain insects is increasing at a rate proportional…

Q: A sample of bacteria is decaying according to a half-life model. If the sample begins with 500…

A:

Q: 1. Strontium-90, 90Sr, has a half-life of 29 years. a) If 42.5 grams remain after 50 years, what is…

A: The formula for the quantity remaining of a substance after t years is: Nt=N012tt12 Here, t12=…

Q: The half - life of Cobalt - 60 is 15 years. How much of an initial 105 g sample will remain after 33

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Q: How long does it take for 1,000 to double when compounded continuously with an interest rate of 2.4%

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Q: A wooden artifact from an ancient tomb contains 20 percent of the carbon-14 that is present in…

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Q: If the half-life of a radioactive substance is 6,800 years, then at what rate is it decaying? (Hint:…

A:

Q: How long will it take for 1000 to decay to 500 with a loss of 3% a year (approximate historical…

A: Given : Initial value = 1000 Final value = 500 Loss is 3% per year Apply the exponential decay…

Q: Radium decomposes at a rate proportional to the amount present. If 100 milligrams of Radium at…

A:

Q: How much should be invested now at an interest rate of 5.5% per year, compounded continuously, to…

A: This question is based on formula of continuous compounding.

Q: a car sells for $12,500 and one year later it is valued at $11,375. find the decay rate of the car

A: Explanation of the answer is as follows

Q: A wooden artifact from an archeological dig contains 60 percent of the carbon-14 that is present in…

A: The amount of time taken to decay a substance follows exponential model P(t)=P0ekt. Here P(t)…

Q: 1. The rate of decay of radium is said to be proportional to the amount of radium present. If the…

A: Since you posted two questions here, i can answer only first one at a time. Please repost other…

Q: The half-life of Radium-226 is 1590 years. a) If a sample contains 200 mg, how many mg will remain…

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Q: Suppose a sample of a certain substance decayed to 79.6% of its original amount after 300 days.…

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Q: A substance decays according to the formula Q = 72(0.5)*, where t is in hours. (a) What is its…

A:

Q: In March 1976 the world population reached 5.5 billion. At that time, a popular news magazine…

A: Let's find.

Q: - Cobalt-60 has a half-life of 5.24 years. a. Find the mass that remains from a 100-mg sample after…

A: To find the mass that remains from 100 mg sample after 30 years and time required to reduce the…

Q: 22. The half-life of radium-226 is 1620 years. a) If the current mass of a sample is 100 grams, what…

A:

Q: A sample of bacteria is decaying according to a half-life model. If the sample begins with 500…

A: The decay function is: P(t)=P0ekt Given P0=500. So, P(t)=500ekt Now given that P(14)=100. So, the…

Q: 2. At what rate of interest, compounded continuously will an investment double in six years? 3.…

A: (2) given that the principle amount will gets doubled in six years if the amount is compounded…

Q: 9. A sample of tritium-3 decayed to 94.5% of its original amount after a year (a) What is the…

A: Consider N (t) is the amount of tritium-3 relative to the original amount, then general form is,

Q: A radioactive substance is decaying according to the formula y = Be-0.02t , where y mg is the amount…

A:

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.