The rate of population growth of a certain country is proportional to the number of inhabitants. if the population of a certain country is now 40 million and 50 million 10 years later, what will be its population 20 years from now?

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A: Given query is to find the time taken to reach the price of the car to 800.

Q: If a substance decomposes at a rate proportional to the amount of the substance present, and the…

A: This question is based on application of diffrential equation.

Q: In Germany the rate of change of a population with respect to time (in years) is proportional to the…

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A: Given Three months = 15 members Also the relationship between construction time and crew members…

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A: Given that: Initial Mass, N0=90 gmAfter 6 hrs, Mass of substance decreased by 5%Rate of decay is…

Q: state of decay of radium is proportional to the amount present at any time. Suppose that 200 mg of…

A: Given query is to find the amount after 3 hour.

Q: Q2: The population of a state is known to grow at a rate proportional to the number of people…

A: Given- The population of a state is known to grow at a rate proportional to the number of people…

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Q: The population of Harford County was 238,145 in 2005 and 249,558 in 2015. A) assuming the growth was…

A: Topic-basic maths

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A: Given:- The rate of change of a certain substance is proportional to the amount of substance is 10…

Q: Consider the constant rate of decrease of a certain microorganism. At the start, there are 10 000…

A: Let's find.

Q: On TV crime shows, the time of death is often determined by taking the temperature of the liver.…

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Q: If the growth rate of a culture of bacteria is proportional to the number of bacteria present. After…

A:

Q: A model for the spread of an epidemic is that the rate of spread is proportional the number of…

A: Given: A model for the spread of an epidemic is that the rate of spread is proportional the number…

Q: The temperature in a laboratory is maintained at 20°C. A warm bath is left to cool down and the rate…

A:

Q: A certain bacteria culture is observed to double its amount after 150 minutes it was initially…

A: It is given that; let current amount of population is =N The rate of growth of culture is ∝ (N)2…

Q: In a city with 500,000 population, the rate of the spread of a new flu epidemic is proportional to…

A: Let the number of infected people at time t be:  P Therefore: dPdt=kP(500000-P)

Q: certain culture of bacteria, the rate of increase is proportional to the numberpresent. (a) If it is…

A: (a) Consider y as the number of bacteria at time t and the rate of change of bacteria can be written…

Q: In a population of 600 robins, the per capita birth rate in a particular period is 0.06 and the per…

A:

Q: Consider the constant rate of decrease of a certain microorganism. At the start, there are 50000…

A: Given query is to find the population of microorganisms after 50 second.

Q: The population of a certain country is known to increase at a rate proportional to the number of…

A: Consider the provided information, We assume that rate of change of amount of substance is…

Q: (a) In a certain culture of bacteria the rate of increase is proportional to the number present. (i)…

A: Since you have posted a multiple question ,I will solve the first question  for you. To get…

Q: 12. If a substance decomposes at a rate proportional to the amount of the substance present, and the…

A:

Q: In a city with 500,000 population, the rate of the spread of a new flu epidemic is proportional to…

A:

Q: In an laboratory, a culture of N strands of bacteria is analyzed. It is found out that the rate of…

A: topic - exponential function

Q: It is known that the population of a certain country at time t is proportional to the people living…

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Q: 1. If the growth rate of a culture of bacteria is proportional to the number of bacteria present.…

A: Given:  If the growth rate of a culture of bacteria is proportional to the number of bacteria…

Q: 5) A cup of coffee cools at rate proportional to the difference between the constant room…

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Q: The population of a country doubles in 50 years. How many years will it be five times as much?…

A: We will find in how many year the population of country will be five times as shown below

Q: 1. Suppose you drive your car on a perfectly flat road at a constant speed with no wind. In this…

A: Consider the given information. As, The car is drive on a perfectly flat road at a constant speed…

Q: A certain population of bacteria is known to grow at a rate proportional to the amount present in a…

A: If y=f(x), then the independent variable x is called the input of the function and the dependent…

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Q: The number of children in a church is increasing at a rate that is proportional to the number of…

A: We will find the number of children after 5 years as following.

Q: If the world's population grows at a rate proportional to the present population and it is recorded…

A: 20 billion population reached in 2121. Hence correct option is second one. For details calculation…

Q: 4. The rate of change of a certain substance is proportional to the amount of substance is 10 grams…

A: According to the given question dxdt∝x.

Q: The Population of Barangay Siksikan is increasing at a rate proportional to its current population.…

A: ⁎ Given:        The population of Barangay Siksikan i.e, increasing     at a rate proportional to…

Q: 104. The rate of growth of a fish population was modeled by the equation -0.61 60,000e (1 +…

A: Given data: The expression for the rate of the fish population is G(t)=60,000e-0.6t/(1+5e-0.6t)2.…

Q: In a certain bacteria culture the rate of increase in a number of bacteria proportional to the…

A:

Q: Please answer the attached question. Thanks a lot

A: Given that the volume V is inversely proportional to the pressure P on the gas.The mathematical…

Q: The rate at which the body cools is proportional to the difference in temperature of the body and…

A: Given the data

Q: Sugar dissolves in water at a rate proportional to the amount still undissolved. If there were 70 kg…

A: The amount of sugar present initially is 70 kg and at the end of 4 hours only 30 kg is left. The…

Q: The population of a bacteria increases at a rate proportional to the present number of bacteria ‘P0’…

A: Given problem is : The population of a bacteria increases at a rate proportional to the present…

Q: The population of a country doubles in 50 years. How many years will it be five times as much?…

A: We can find the answer as below.

Q: The state of decay of radium is proportional to the amount present at any time. Suppose that 400 mg…

A: Here we will find radium left after 2.5 hours and 10hours,

Q: 1. Given the equation, y = 30(1.25- 5)^x; does it represent growth or decay? What is the rate of…

A: Explanation of the answer is as follows

Equations and Inequations

Equations and inequalities describe the relationship between two mathematical expressions.

Linear Functions

A linear function can just be a constant, or it can be the constant multiplied with the variable like x or y. If the variables are of the form, x2, x1/2 or y2 it is not linear. The exponent over the variables should always be 1.