Identify and interpret the decay factor for each of the following. a.) P= 400×(0.43)^t decay factor: 0.43 This means that the function decays by ___?___ % b.) f(t)= 3800×(0.84)^t decay factor: 0.84 This means that the function decays by ___?___
20,298 results
Exponential Growth and Decay
Can somebody please check my answers? 1. Identify the initial amount a and the growth factor b in the exponential function. g(x)=14*2^x a)a=14, b=x b)a=14, b=2

Algebra 2
For the annual rate of change of +70%, find the corresponding growth or decay factor. 0.70 1.70 170 70 For the annual rate of change of 75%, find the corresponding growth or decay factor. 75 1.25 0.75 0.25 I'm confused, please help? How can I solve

Math
Find the initial value a, growth/decay factor b, and growth/decay rate r for the following exponential function: Q(t)=0.0036(2.58)^−4t a) The initial value is a= (b) The growth factor is b= (c) The growth rate is r=

Physics
Suppose you are provided with 500 dice.calculate the number of throws that is equivalent to one half life and the decay costant for the process.under radioactivity decay analogue experiment

Chemistry
The complete decay of Americium241 involves successively with a (alpha), a, B(beta), a, a, B, a, a, a, B, a production. Identify the 11 intermediate nuclides. I did the first one, ^241_95 Am> ^4_2He + ^237_93Np (hopes that doesn't look too confusing, ^

chemistry
How long will it take for 25% of the C14 atoms in a sample of C14 to decay? The halflife for the radioactive decay of C14 is 5730 years. If a sample of C14 initially contains 1.1 mmol of C14 , how many millimoles will be left after 2275 years?

Calculus
The rate of decay is proportional to the mass for radioactive material. For a certain radioactive isotope, this rate of decay is given by the differential equation dm/dt = .022m, where m is the mass of the isotope in mg and t is the time in years. A. If

algebra 2
identify y= 3 (1.2)^x as an example of growth or decay. what is the y intercept.

Math
Does the function represent exponential growth or exponential decay. Identify the growth or decay factor. y=9 x (1/2) I'm not sure how to make the chart to show the decay.

nuclear physics
1) write the proper nuclear reactions for the following: A) betadecay of radon222 B) Alphadecay of uranium238 2) how does the CANDU reactor work?

science help
Two factors which cause global climate change are listed below. Factor 1: Volcanic eruptions. Factor 2: Changes in the amount of Sun’s heat received by the Earth’s atmosphere and surface. Which of these statements is correct about the two factors which

algebra
what is the decay rate: initial amount: 6 decay factor: 0.98 decay factor: ?

chem
Potassium40 undergoes three different modes of radioactive decay (Beta decay, Positron decay, and Electron Capture decay). Write balanced nuclear reactions for each of these decay modes. Are the products stable (not radioactive)?

math
Identify the initial value and growth or decay factor in each of the following exponential functions: a) y= 350 x 5^x b) Q= 25000 x (1/2)^t c) P=(7 x 10^3) x 4^t d) N= 5000 x (9/10)^t

Mathematics
How do I do these? 1. Simplify using only positive exponents: (2t)⁻⁶ 2. Simplify using only positive exponents: (w⁻²j⁻⁴)⁻³(j⁷j³) 3. Simplify using only positive exponents: a²b⁻⁷c⁴  a⁵b³c⁻² 4. Evaluate the expression

math
Sam bought a new car for $26,500. The car depreciates approximately 13% of its value each year. A) What is the decay factor for the value of this car? b) Write an equation to model the decay value of this car? c) What will the value of the car be in 10

Algebra 2
Examine the polynomial p(x)=6x^3+17x^2−24x−35. Use the Factor Theorem to identify which binomial is a factor of p(x). a.3x+5 b.2x+7 c.x−1 d.2x−7 I thought that 2x+7 was a factor of p(x) but I don't know and I am confused now can somebody help

Chemistry
Predict the mode of decay for Mn59. a. beta decay

Math
Use the Factor Theorem to determine whether x3 is a factor of P(x)=2x^35x^9 . Specifically, evaluate P at the proper value, and then determine whether x3 is a factor. P(_)=__ also pick which one applies x3 is not a factor of P(x) x3 is a factor of

chem
Write a partial decay series for Rn220 undergoing the following sequential decays: á (alpha decay), á, â(beta decay), á. (Enter the mass number in the first raised box, the atomic number in the second lower box and the symbol of the element in the

Math
Exponential function N= 500x0.74^t what is the monthly decay factor? What is the monthly percentage decay rate? What is the percentage decay rate per second?

Chemistry  radioactivity
Hello Dr.Bob. Could you check my work please? I'm not sure if I'm right in how I solved this problem. Which of the following nuclides are most likely to decay via beta decay? A) I131 B) Pb206 C) F18 D) Zr90 E) Ar40 I know that nuclides undergo beta

Chemistry
There are several technological applications for the transuranium elements (Z > 92). An important one is in smoke detectors, which can use the decay of a tiny amount of americium241 to neptunium237.What subatomic particle is emitted from that decay

Emergancy help!!!!!!!!!
Classify the model as exponential growth or exponential decay. Identify the growth or decay factor and the percent increase or decrease per time period. y=16(1.25)^t

Math (3 of 4 question)
9. Does the function represent exponential growth or exponential decay? Identify the growth or decay factor. = 9 ∙ (1/2)ˣ

Algebra 1
Identify the initial amount a and the decay factor b in each exponential function. 1.) y= 0.1* 0.9^x

chemistry
these two radioactive elements decay by electron capture (EC). Write the nuclear reactions for each decay including the formation of the daughter products: a. 35 S + 0 e → 16 1 b. 69 Sr + 0 e → 35 1

Math
Classify the model as exponential growth or exponential decay. Identify the growht or decay factor and the percent increase or decrease per time period.

math
Sam bought a new car for $26,500. The car depreciates approximately 13% of its value each year. a) What is the decay factor for the value of this car? b) Write an equation to model the decay value of this car?

Physic
A radioactive element x has half life of 30 days and will decay to become another new element Y.. a) calculate decay constant b) how long it will take for 90% of the no.Of atom in radioisotope x to decay?

Algebra
Determine if the equation y = 2^x represents exponential growth or decay I thought at first it was growth but now I think it might be decay because there is no "b" in a parentheses so do I assume b is less than 1 so it's decay? Please help

Math
So I figured out how to do the first 6, how do I do the remaining? 7. Evaluate the function below over the domain {1, 0, 1, 2}. As the values of the domain increase, do the values of the function increase or decrease? y = (3/4)ˣ 8. Suppose an investment

science
Which statement best explains why dating geologic materials from the Quarternary Period uses a different radioactive isotope than for materials from the cambrian Period? a. all rocks contain radioactive substances. b. some isotopes decay faster than

Science
Which of the following characteristics xray photon emission? (a)electron capture (b)betadecay (c)positron emmision (d)gammadecay

Chemistry
It takes about 10^16 years for just half the samarium149 in nature to decay by alphaparticle emission. Write the decay equation, and find the isotope that is produced by the reaction.

Algebra 1
1.the number of bacteria present in a colony is 180 at 12 noon and the bacteria grows at a rate of 22% per hour. how many will be present at 8pm? 2.A 1970 comic book has appreciated 10% per year and originally sold for $0.35. What will it be worth on 2010?

chemistry
The rate constants for a first order decay reaction are found to be: k287.3∘C=1 x 10−4 s−1 k327.4∘C=19.2 x 10−4 s−1 a) Determine the value, in s1 of k250∘C (b) How long will it take, at 350 ∘C, for the reactant to decay to 1% of its

Math
Joshua wants to know if x−5 is a factor of the polynomial P(x)=x^3−5x^2−x+5. Joshua calculates P(5) and applies the Factor Theorem to conclude that x−5 is not a factor of P(x). Is Josh's conclusion that x−5 is not a factor correct? Why or why

science
Which is NOT a factor that affects fossilization? A) age of the organism B) hard or soft body parts C) predators destroying the body D) body decay due to natural elements

chemistry
a certain radioactive nuclide has a half life of 5.00 hour. Calcuate the decay rate for 1.000 mole of this nuclide __________ decay s1

mathematics
what is the equation for exponetial decay(radioactive decay) and how to use the half life in the equation

math
a) A linear function f(t)=b + mt has a slope of 4 and vertical intercept of 20. Find its equation. b) An exponential function g(t)=Ca^t has a decay factor of 1/4 and an initial value of 20. Find its equation. Plot both functions

precalc
Three hours after taking a pain medication, 41% of the medication still remains in the bloodstream. Let m be the 1hour decay factor. a. What is the 3hour decay factor as a numeric value? What is the 3hour decay factor in terms of m ? b. Use your results

Algebra
Identify and interpret the decay factor for each of the following. a.) P= 400×(0.43)^t decay factor: 0.43 This means that the function decays by ___?___ % b.) f(t)= 3800×(0.84)^t decay factor: 0.84 This means that the function decays by ___?___ % c.) y=

math 115
A city of population 2.0 million is expected to experience a 15% decrease in population every 10 years. a. What is the 10year decay factor? What is the yearly decay factor? The yearly decay rate? b. Use part (a) to create an exponential population model

chemistry
Write a partial decay series for Po214 undergoing the following sequential decays: á, â, á, â. Use e for an electron. Use the format +1 or 1 for charge. a)a decay b)â decay c)a decay d)â decay

Algebra II
I first want to make it clear that I have only taken Geometry, Algebra I, and preAlgebra. That seemed to clear things up last time. Question: Matt bought a car at the cost of 25,000 dollars. This car's value goes down 15% every year. 1. What is the decay

8th grade
Can you make a sentence that is not to hard to understand using the words growth factor, exponential form, and decay factor?

Math Growth & Decay
a) A growth factor of 1.22 corresponds to a rate of? b)a growth rate of 6.7% corresponds to a growth factor of? c)a decay factor pf 0.972 corresponds to a decay rate of? d)A decay rate of 12.3% corresponds to a decay factor of?

chem
a) Potassium40 undergoes three different modes of radioactive decay (Beta decay, Positron decay, and Electron Capture decay). Write balanced nuclear reactions for each of these decay modes. Are the products stable (not radioactive)? b) Potassium40 has a

physics
a radioactive sample has a decay rate R of 518 decay/min at time t=7 min and 156 decay/ min at time t=17 min. calculate the decay constant and the initial decay rate?

Algebra
What is the decay factor of 50% spending cut?

Physic
A radioactive element x has half life of 30 days and will decay to become another new element Y.. a) calculate decay constant b) how long it will take for 90% of the no.Of atom in radioisotope x to decay?

Physic
A radioactive element x has half life of 30 days and will decay to become another new element Y.. a) calculate decay constant b) how long it will take for 90% of the no.Of atom in radioisotope x to decay?

Math *Updated*
So I figured out how to do the first 6, how do I do the remaining? 7. Evaluate the function below over the domain {1, 0, 1, 2}. As the values of the domain increase, do the values of the function increase or decrease? y = (3/4)ˣ 8. Suppose an investment

Algebra
) Research the financial crisis in Greece and summarize it in onetwo paragraphs. Note: Paragraphs consists of three complete sentences. This is an academic assignment where you need to use proper grammar (i.e., capitalization, punctuation, and no

Algebra
Research the financial crisis in Greece and summarize it in onetwo paragraphs. Note: Paragraphs consists of three complete sentences. This is an academic assignment where you need to use proper grammar (i.e., capitalization, punctuation, and no

Physics
Is a small or large decay constant best for protection against gamma radiation? Hint: Calculate half thickness. Example: Decay constants for Pb, Al, water, and Fe are 0.77, 0.16, 107, and 0.44. Which is better for radiation shielding? The larger the decay

Physics Help Please! Decay Questions
archaeologist digging at the site of an ancient settlement discover the remains of a wooden structure. carbon 14 dating of the wood from the structure finds a decay rate of 180 decays/min. Knowing that the decay rate for living wood is 600 decays/min and

Physics Help Please
archaeologist digging at the site of an ancient settlement discover the remains of a wooden structure. carbon 14 dating of the wood from the structure finds a decay rate of 180 decays/min. Knowing that the decay rate for living wood is 600 decays/min and

Math
How would I do these? 6. The speed of sound is approximately 1.2 × 10³ km/h. How long does it take for sound to travel 7.2 × 10² km? Write your answer in minutes. 7. Evaluate the function below over the domain {1, 0, 1, 2}. As the values of the domain

Algebra
How do I identify an exponential growth/decay function on a graph? I'm assuming that if the curve moves from left to right, upwards, it is growth, and if it moves left to right, downwards, then it is decay. Please tell me whether this reasoning is right or

physics
A building has become accidentally contaminated with radioactivity. THe longest lived material in the building is strontium90 (atomic mass of 90 Sr 38 is 89.9077). If the building initially contained 5.0kg of this subtstance and the safe level is less

Chemistry
Write a nuclear equation for the following: Iodine 131 undergoes beta decay two times Plutonium 239 is an alpha emitter Th 234 undergoes beta decay once and then alpha decay How do I go about writing nuclear equations?

Biology
Help please! Do organic fertilizer products (in bags or sacks) decay after some time? If yes, how long will it take to decay?

Algebra
What are some reallife examples of exponential decay? Please help me think of some ideas...except radioactive decay.

Linear Algebra
whats the exponential decay equation for 100 atoms that decay 1/20 per day

chemistry
If the radiicativr decay of nuclear explosion contains 90 Sr , with a half life of 28.1 years how long will it take for 99 of this radioaioot to decay

Chemistry  radioactivity
Hello Dr.Bob, could you please help me with this problem: Which of the following nuclides are most likely to decay via beta decay? a)200 78 Pt b)192 78 Pt c)188 78 Pt d)196 78 Pt

chemistry
which of the following is consistent with the line spectrum of the hydrogen atom? one of the choices is the nucleus is udnergoing gamma decay. but this si not one of the answers. Im just wondering what kind of decay happens?

Physics
The factor "number of stars in the survey" should preferably be referred to as a / an A) Astronomical factor B) Biological factor C) Sociotechnological factor D) Data Limitation factor

chem
Nuclide X has decay constant 1.08 h1. It can decay in 2 branches, to nuclide Y or to nuclide Z: X > Y, with decay constant 0.43 h1, and X > Z, with unknown decay constant. If there are 10 moles of nuclide X at time t = 0, how many moles of each

science
Suppose you are provided with 500 dice.calculate the number of throws that is equivalent to one half life and the decay constant for the process.under radioactivity decay analogue experiment.

Math
7. The value of a computer has a decay factor of 0.85 per year. After 2 years, the computer is worth $1445. What was the original value of the computer?

Chemistry
The rate constants for a first order decay reaction are found to be: K287.3C = 1 X 104s1 K327.4C = 19.2 X 104s1 (a) Determine the value, in s1 of K250C (b) How long will it take, at 350C, for the reactant to decay to 1% of its original concentration?

Chemistry
The rate constants for a first order decay reaction are found to be: k287.3∘C=1 x 10−4 s−1 k327.4∘C=19.2 x 10−4 s−1 (a) Determine the value, in s1 of k250∘C (b) How long will it take, at 350 ∘C, for the reactant to decay to 1% of its

chemistry (urgent)
can you tell me how the betaplus decay process may be understood (i) at the level of individual nucleons and (ii) at the level of quarks, by writing a decay reaction in each case.

physics
if 5/6th of a radioactive sample decay in 70 years and 1/6th remain. how can you find the half life without knowing the decay constant can you help?

chemistry
can you tell me how the betaplus decay process may be understood (i) at the level of individual nucleons and (ii) at the level of quarks, by writing a decay reaction in each case.

Science
Why does beta particle has different notation of nucleon number in spontaneous decay of tritium vs. beta decay of uranium 237?

Astronomy
Imagine that you are a particle physicist, and you have come up with a theory that some gammaray bursts come from the decay of a new and exotic subatomic particle that you think might exist. You calculated that if this particle really does exist and

Physics ...
Hi Radioactive decay  A radioactive nuclide has a decay constant of  10^6 s1 what is its half life ? I have come up with is IN (2) / 0.000001 s1 = 693147.18055 which i am having troube working into real figures Can anyone help please .. thanks

Physics
Hi Radioactive decay  A radioactive nuclide has a decay constant of  10^6 s1 what is its half life ? I have come up with is IN (2) / 0.000001 s1 = 693147.18055 which i am having troube working into real figures Can anyone help please .. thanks

Chemistry
There are several technological applications for the transuranium elements (Z > 92). An important one is in smoke detectors, which can use the decay of a tiny amount of americium241 to neptunium237. What subatomic particle is emitted from that decay

Algebra 2
The value of a car depreciates exponentially over time. you spend 20000 to purchase the car, and three years later, the car value is at 14580. What is the decay factor (Bvalue) of the car? Show work

Math+Growth/Decay
3e^2x = G 3e^2x = G 3e^2x = D 1/8e^2x = G 1/8e^2x = D Would that be correct? I just made these examples up in my head. How can you tell if its growth or decay? I just look at the exponents. If is a negative then its decay? if its positive then its

math
39mg radioactive with 1/2 life is decay total in 2.5 years. How many mg it remain if half of the amount is decay in 2 years? Thank you!

Algebra
Determine whether each function is an example of exponential growth or decay. Then find the yintercept. a) y = 2(4)^x growth or decay yintercept: b) y = 3(.25)^x growth or decay yintercept:

Chemistry
There are several technological applications for the transuranium elements (Z > 92). An important one is in smoke detectors, which can use the decay of a tiny amount of americium241 to neptunium237. What subatomic particle is emitted from that decay

Chemistry
Pu238 is radioactive by alphadecay (halflife 87.7 y). Each decay releases 5.6 MeV of energy. Pu238 is sometimes used to power space probes. If all the decay energy can be converted to electric power, what mass of Pu238 would be required to power a 22

chem
Pu238 is radioactive by alphadecay (halflife 87.7 y). Each decay releases 5.6 MeV of energy. Pu238 is sometimes used to power space probes. If all the decay energy can be converted to electric power, what mass of Pu238 would be required to power a 22

itc c++
can any one please dry run this code #include using namespace std; int main() { intnum,factor=1,temp; cout1) { factor = factor/10; cout

MATH
Factor by identifying a common factor in each term. g) 6xy2 = (3x) (?) h) 25a3b2 = (5a2b2) (?) i) 6x + 6y + 6p Factor: j) x(x+2) + y (x + 2)  5(x + 2) k) 5y2  10y3 l) ax + ay + az Factor: m) yx(y+1) + 4x(y + 1)  5(y + 1) n) 6p2  3p3 o) 4x4 + 2x Please

Geology
Does this sound right? Describe your assigned method and how it is used to evaluate geologic time. My assigned method was Absolute Dating / Numerical Age. Absolute Dating / Numerical Age is the process that assigns a numerical age ( this tells how old a

DrBob222
On Monday you helped me to understand and answer the one question, but I am not too sure if they want all the calculations that you answered... regretably, I am still a bit lost with these! Below is the question as it is printed: The isotope caesium137,

math
If the sides of a box all double in length, by how much does its volume increase? By a factor of 2 By a factor of 4 By a factor of 6 By a factor of 8 Explain your answer.

Algebra
What is the exponential growth or decay. Of this function and the constant percentage? 20(.876)^x Would the percentage be expressed a decimal? I know it is decay ,so would you just add a negative to whatever percentage you get?

Chemistry
Radioactive decay is first order in the decaying isotope. For example, strontium90 contained in fallout from nuclear explosions decays to yttrium90 and a beta particle. Write the rate law for the decay of strontium90. Can you please take me step by stem

physics
if 15/16 of 12 atom an element decay in 8minutes. find the decay constant of the element.

Physics
A first order exponential decay can be written as A(t)= Ae^(t/r) where A(t) is the amount (of substance) after time t, A is the initial amount at time t=0 and r is the decay time. The fall time is defined as the time in which A(t) falls from 90% to 10% of