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The time required for the population to triple is nearly 8 years if the population of a community is known to increase at a rate proportional to the number of people present at time t and an initial population p0 has doubled in 5 years.

Given that the population is increasing at a rate proportional to the number of people present at time t.

the population growth is modeled by the following differential equation:

[tex]\frac{dP(t)}{dt} = kP(t)[/tex]

P(t) = Po[tex]e^{kt}[/tex]           ..(1)

Initially given that population doubled in five years

i.e. P(5) = 2Po

Putting it in equation(1)

2Po = Po[tex]e^{5k}[/tex]

taking logs is both sides

ln 2 = 5k

k = ln2/5 = 0.1386

therefore, P(t) = Po[tex]e^{0.1386t}[/tex]

Now, the time required for the population to triple or P(t) 3Po

3Po = Po[tex]e^{0.1386t}[/tex]

ln3 = 0.1386t

or t = 7.9265 = 7.9

Therefore, the time required for the population to triple is nearly 8 years.

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Answer:

I believe thats in function notation but please respond with the actual equation/function which you have not provided

Step-by-step explanation:

Answer:

a₅ = 141

Step-by-step explanation:

using the recursive rule [tex]a_{n+1}[/tex] = - 3[tex]a_{n}[/tex] - 3 and a₁ = 1

the recursive rule allows a term in the sequence to be found by multiplying the previous term by - 3 and then subtracting 3 , that ia

a₁ = 1

a₂ = - 3a₁ - 3 = - 3(1) - 3 = - 3 - 3 = - 6

a₃ = - 3a₂ - 3 = - 3(- 6) - 3 = 18 - 3 = 15

a₄ = - 3a₃ - 3 = - 3(15) - 3 = - 45 - 3 = - 48

a₅ = - 3a₄ - 3 = - 3(- 48) - 3 = 144 - 3 = 141

Answer: 17

Step-by-step explanation:

in the screenshot, b=y

When a population which grows exponentially at the rate of 1.55%, will take 44.7 years become double.

Exponential growth function is defined as a function that shows an increase within a population that occurs at the same rate over time. When populations experience doubling or tripling in numbers, can assume the data increases exponentially. We have, a population grows exponentially.

The growth rate of population = 1.55%

Let us assume initial population be "P₀". We have to determine the time ( in years ) will it take the population to double, i.e., excepted value = 2P₀.

As we know, exponential population growth function is, P = P₀ eʳᵗ

where, P ---> total expected population

P₀ --> initial population

r --> population growth rate

t --> time period (in years)

P = 2P₀ , r = 1.55% = 0.0155 , substituting all known values in above formula,

2P₀ = P₀e⁰.⁰¹⁵⁵ᵗ

=> 2 = e⁰.⁰¹⁵⁵ᵗ

Taking natrual logarithm both sides

=> ln 2 = ln (e⁰.⁰¹⁵⁵ᵗ )

=> ln 2 = 0.0155 ×t ln e

=> 0.6931 = 0.0155 ×t ( since ln e = 1)

=> t = 0.6931/0.0155

=> t = 44.719 ~ 44.7

So, required value of t is 44.7 years.

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Answer:

Step-by-step explanation:

To find the value of y at the point where x=1, we can substitute x=1 into the equation:

x^2+xy+y^3=1

1+y+y^3=1

y+y^3=0

y(y^2+1)=0

y=0 or y=-1 or y=1

To find the value of y' at the point where x=1, we need to take the derivative of the equation with respect to x:

2x + y + xy' + 3y^2y' = 0

y' = -(2x+y)/(3y^2+x)

When x = 1, y' = -(2(1)+y)/(3y^2+1)

To find the value of y'' at the point where x=1, we need to take the derivative of the equation with respect to x again:

2 + y' + xy'' + 3(2y)(y') = 0

y'' = -(2+y')/(3(2y)+(x))

When x = 1, y'' = -(2+y')/(3(2y)+(1))

To find the value of y''' at the point where x=1, we need to take the derivative of the equation with respect to x one more time:

y'' + xy''' + 3(2y')(y') + 3y(3y)(y') = 0

y''' = -(y'' + 3(2y')(y') + 3y(3y)(y'))/(x)

When x = 1, y''' = -(y'' + 3(2y')(y') + 3y(3y)(y'))/(1)

It is important to note that to find the exact value of y, y', y'', y''' we need to find the value of y in the equation x^2+xy+y^3=1 and substitute it into the derivative equations, but without the equation solved we can't find the exact values.

The area of the border between the two rectangles is 40 units^2

The new rectangle will have the dimensions  of (7 + 2) x (11 + 2)  =  9 x 13

So....the area between them is just  

The equation for calculating a rectangle's area. Rectangle's surface area. A = l × b. Once the length and breadth of a rectangle are known, its area may be computed.

The area of the rectangle is obtained in a square-unit dimension by multiplying length and width.

( 9 * 13) - (11 * 7 )  =

117 - 77 =

40 units^2

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Solving a formula for a variable means rewriting the formula so that the variable is isolated on one side of the equation. This is useful in algebraic equations when trying to solve for a certain variable in order to find the value of that variable.

This means that all of the other terms in the equation will be on the opposite side of the equation, and the variable will be alone with no other terms. r example, if you have the equation 2x + 5 = 15, you would want to solve for x. To do this, you would need to move the 5 to the other side of the equation, and then divide both sides by 2. This would leave you with x = 5, which is the solution for the equation.

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The pH can be calculated using the equation pH = –log(H+), where H+ is the hydronium ion concentration.

If the pH level is 2.5, we can calculate the hydronium ion concentration by rearranging the equation:

H+ = 10^(-pH)

H+ = 10^(-2.5)

H+ = 3.162 x 10^-3 (Option A)

Therefore, the hydronium ion concentration of the vinegar is 3.162 x 10^-3.

Answer:

The pH can be calculated using the equation pH = –log(H+), where H+ is the hydronium ion concentration. To find the hydronium ion concentration of a particular vinegar if the pH level is 2.5, we can rearrange this equation to solve for H+:

H+ = 10^-pH

So, if the pH level is 2.5, we can plug in this value into the equation to find the hydronium ion concentration:

H+ = 10^-2.5

H+ = 3.162 x 10^-3

So the hydronium ion concentration of the vinegar is 3.162 x 10^-3.

Option 3.162 x 10^-3 is correct.

The given expression if 23+37=60 does 23+37+9=60+97 is not true.

An expression is a way of writing a statement with more than two variables or numbers with operations such as addition, subtraction, multiplication, and division.

Example: 2 + 3x + 4y = 7 is an expression.

We have,

23 + 37 = 60 ____(1)

Now,

From (1),

23 + 37 + 9 = 60 + 97

23 + 37 + 9 = 157

60 + 9 = 157

69 ≠ 157

This is not true.

Thus,

The given expression is not true.

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A right angle is one that is 90 degrees in length.

When two rays intersect and form a 90˚ angle or are perpendicular to each other at the intersection, they are said to form a right angle. It is the most frequently encountered angle in our daily lives. It can be noticed in room corners, box edges, mobile phone screens, and so on.

A square's and a rectangle's sides always make a right angle with each other. It is represented in radians as /2.

The angle formed by two lines that are perpendicular to each other is called a right angle. A right angle is equal to 90° and is in the shape of the letter "L". In the following figure, ray AB and BC form a right angle ABC.

Thus, A right angle is one that is 90 degrees in length.

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Answer:

5

Step-by-step explanation:

slope = rise/run or y-value/x-value

point=(10,50)

50/10=5

slope=5

A: The range of the function f(x) is (-3,∞).

B: The horizontal asymptote for y=2^(x+1)−3 is y=-3, the vertical and horizontal asymptote for y=10/x is x=0 and y=0 respectively.

C: The end behaviour of y=2^(x+1)−3 is [x→∞,x→-∞] = [f(x)→∞,f(x)→-3] and the end behaviour of y=10/x is [x→∞,x→-∞] = [f(x)→0,f(x)→0].

What is a function?

In mathematics, a function is a unique arrangement of the inputs (also referred to as the domain) and their outputs (sometimes referred to as the codomain), where each input has exactly one output and the output can be linked to its input.

The set of values of the dependent variable for which a function is defined is known as the range of the function.

The range of an exponential function of the form c·n^(ax+b) + k is f(x) > k.

So, the range of function {2^(x+1)}-3 is f(x)>-3.

The range of function 10/x is (-∞,+∞).

So, the range for system of function becomes (-3,+∞).

The line x=L is a vertical asymptote of the function y=2^(x+1)−3, if the limit of the function (one-sided) at this point is infinite.

In other words, it means that possible points are points where the denominator equals 0 or doesn't exist.

So, find the points where the denominator equals 0 and check them.

As it can be seen, there are no such points, so this function doesn't have vertical asymptotes.

Line y=L is a horizontal asymptote of the function y=f(x), if either limx→∞f(x)=L or limx→−∞f(x)=L, and L is finite.

Calculate the limits -

limx→∞(2x+1−3)=∞

limx→−∞(2x+1−3)=−3

Thus, the horizontal asymptote is y=−3.

The line x=L is a vertical asymptote of the function y=10x, if the limit of the function (one-sided) at this point is infinite.

In other words, it means that possible points are points where the denominator equals 0 or doesn't exist.

So, find the points where the denominator equals 0 and check them.

x=0, check:

limx→0+(10x)=∞

Since the limit is infinite, then x=0 is a vertical asymptote.

Line y=L is a horizontal asymptote of the function y=f(x), if either limx→∞f(x)=L or limx→−∞f(x)=L, and L is finite.

Calculate the limits:

limx→∞(10x)=0

limx→−∞(10x)=0

Thus, the horizontal asymptote is y=0.

The end behaviour of a function f(x) describes the behaviour of the function as x approaches +∞ and x approaches -∞.

The end behaviour of y=2^(x+1)−3 is as x approaches +∞, f(x) approaches +∞ and x approaches -∞, f(x) approaches -3.

The end behaviour of y=10/x is as x approaches +∞, f(x) approaches 0 and x approaches -∞, f(x) approaches 0.

Therefore, the range, asymptotes and end behaviour is found.

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The sets of all the x-coordinates and all the y-coordinates of ordered pairs, respectively, are the domain and range of a relation.

For example, if the relation is, R = {(1, 2), (2, 2), (3, 3), (4, 3)}, then:

Domain = the set of all x-coordinates = {1, 2, 3, 4}

Range = the set of all y-coordinates = {2, 3}

The domain and range of a function are the components of a function. The domain is the set of all the input values of a function and range is the possible output given by the function. Domain→ Function →Range. If there exists a function f: A →B such that every element of A is mapped to elements in B, then A is the domain and B is the co-domain. The image of an element 'a' under a relation R is given by 'b', where (a,b) ∈ R. The range of the function is the set of images. The domain and range of a function is denoted in general as follows: Domain(f) = {x ∈ R} and range(f)={f(x) : x ∈ domain(f)}.

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For a dialysis experiment, we will need two different sections of dialysis tubing.

One section of dialysis tubing should be filled with a solution containing the molecule or compound you wish to isolate. This solution should be placed in a container and the dialysis tubing should be submerged in the solution.

The second piece of dialysis tubing should be filled with a dialysis buffer, which will act as the medium for the experiment. This solution should also be placed in a container and the dialysis tubing should be submerged in the solution.

The two sections of dialysis tubing should then be connected together with a clamp or a knot, and the experiment can begin. This setup will allow the molecule or compound to move from the first section of dialysis tubing, across the dialysis membrane, and into the second section of dialysis tubing.

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A production possibility chart is a graphical representation of the maximum amount of a good or service that can be produced using a given amount of resources.

A production possibility chart is a graphical representation of the maximum amount of a good or service that can be produced using a given amount of resources. It provides a visual representation of the tradeoffs between two or more different types of production that must be made when allocating finite resources. The production possibility chart illustrates the concept of opportunity cost, which is the cost of a particular decision in terms of the next best alternative. By plotting the various production possibilities, it is easy to see the possible outcomes of different combinations of resources. For example, a production possibility chart can be used to illustrate the tradeoff between producing more of one good and less of another in order to maximize efficiency.

A production possibility chart is a graphical representation of the maximum amount of a good or service that can be produced using a given amount of resources. It illustrates the concept of opportunity cost and the tradeoffs between different types of production that must be made when allocating finite resources. It is used to show the possible outcomes of different combinations of resources and to maximize efficiency.

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Common logarithms, also known as base 10 logarithms, are logarithms in which the base of the exponential function is 10.

1. Common logarithms (base 10)

2. Natural logarithms (base e)

3. Binary logarithms (base 2)

Common logarithms, also known as base 10 logarithms, are logarithms in which the base of the exponential function is 10. This means that the logarithm of a number is the exponent to which 10 must be raised to produce that number. Natural logarithms, also known as base e logarithms, are logarithms in which the base of the exponential function is e, which is an irrational number approximately equal to 2.718. This means that the logarithm of a number is the exponent to which e must be raised to produce that number. Binary logarithms, also known as base 2 logarithms, are logarithms in which the base of the exponential function is 2. This means that the logarithm of a number is the exponent to which 2 must be raised to produce that number. All three types of logarithms are used in mathematics, science, and engineering to simplify complicated calculations.

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Five points are located on a line. The value of K is 12.

We would first draw the number line and, by trial and error, add some of the above-mentioned numbers to identify the missing number.

The range of the numbers would be 0 to 19. This is so because the ten values listed represent the least to maximum distances between pairs of points.

That is, in order to receive 2, the point pairs would need to be between 0 and 2, and in order to get 19, they would need to be between 0 and 19.

Place the following numbers on the first number line we will create 0, 2, and 19.

The pairs could be 0 and 7 or 8 and 15 in order to have a distance of 7.

This would be shown on the number line.

From the arrows drawn, we can see we have distances: 2, 7, 15, 19, 5, 13, 17, 8, 12, 4

The number available in this list but not specified in the ten-distance list in the question is 12.

Therefore, the value of k = 12

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Answer:

Julie's

Step-by-step explanation:

because she used 2 scoops of choclate and 4 scoops of vanilla

[tex]\qquad \qquad \textit{inverse proportional variation} \\\\ \textit{\underline{y} varies inversely with \underline{x}} ~\hspace{6em} \stackrel{\textit{constant of variation}}{y=\cfrac{\stackrel{\downarrow }{k}}{x}~\hfill } \\\\ \textit{\underline{x} varies inversely with }\underline{z^5} ~\hspace{5.5em} \stackrel{\textit{constant of variation}}{x=\cfrac{\stackrel{\downarrow }{k}}{z^5}~\hfill } \\\\[-0.35em] ~\dotfill[/tex]

[tex]\stackrel{\textit{S varies inversely with }F^2}{S = \cfrac{k}{F^2}}\hspace{5em}\textit{we also know that} \begin{cases} F=8\\ S=125 \end{cases} \\\\\\ 125=\cfrac{k}{8}\implies (125)(8)=k\implies 1000=k~\hfill \boxed{S=\cfrac{1000}{F^2}} \\\\\\ \textit{when F=4, what is "S"?}\qquad S=\cfrac{1000}{4^2}\implies S=\cfrac{125}{2}[/tex]

The graph of a logarithmic function is first distinguished by the fact that it passes through (1,0).

In the 17th century, Scottish mathematician John Napier (1550-1617) developed logarithms as a tool for computing. From the Greek terms for ratio (logos) and number, he constructed the phrase (arithmos).

A logarithmic function is an exponential function's inverse. Recall that switching the x and y positions yields the inverse of a function. This corresponds to the graph's y=x line. The exponential curve reflects the logarithmic curve, as shown in the graph to the right.

All logarithmic function graphs will exhibit the following traits: The graph of the logarithmic function travels across points (1,0). If the base of a logarithmic function exceeds 1, the graph will become steeper.

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The value of the variables 'x' and 'y' will be 7 and 4, respectively.

The polygonal shape of a triangle has a number of sides and three independent variables. Angles in the triangle add up to 180°.

The ratio of the matching sides will remain constant if two triangles are comparable to one another.

The triangle ΔMAS is congruent to the triangle ΔNER. Then the corresponding sides and angles are equal to each other. Then we have

∠NER = ∠MAS

(16x)° = 112°

x = 7

Then the other equation is given as,

NR = MS

3x + 5y = 41

3(7) + 5y = 41

21 + 5y = 41

5y = 20

y = 4

The value of the variables 'x' and 'y' will be 7 and 4, respectively.

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The probability that 2 or fewer students in a class of 30 will be overweight, P(X < 2) is 0.33.

Probability is defined as the ratio of the possible outcomes to the total outcomes of an event. We have, 20% of children are considered overweight.

Total students in a class = 30

We have to determine the probability that 2 or fewer students in a class will be overweight. Using the exponential probability distribution,

P( X= x ) = me⁻ᵐˣ

where, m --> parameter

e --> special math constant and e = 2.73

Now, the probability for X is less than x

P( X < x ) = 1 - e⁻ᵐˣ

here, m = 0.20 , x = 2

The required probability, P(X < 2)

= 1 - e⁻⁽⁰·²⁰⁾²

= 1 - e⁻⁰·⁴⁰

= 1 - 0.670

= 0.33

So, required probability is 0.33.

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Answer:

The rate of speed is 1,066

Step-by-step explanation:

If you see it as a fraction: 5/410 and 13/?

You can multiply 13 and 410 together and divide that quotient by 5 to find the rate.

13 x 410 is 5,330 and 5,330 divided by 5 is 1,066.

The required way to write logarithmic function is [tex]\log_{b}({b^x})=x[/tex]

A base must be raised to a certain exponent or power, or logarithm, in order to produce a specific number. If bx = n, then x is the logarithm of n to the base b, which is expressed mathematically as x = logb n. For instance, 23 = 8; hence, 3 is the base-2 logarithm of 8 or 3 = log2 8.

The formula for the logarithmic function is f(x) = log base b of x. The base 10 is used for the common log.

The base used by the natural log is e, an irrational integer with the value 2.71828.

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option A is correct, 5+0.5n=11 is the equation and value of n is 12.

Two or more expressions with an Equal sign is called as Equation.

Given sentence is  5 increased by half a number is 11.

In the sentence increases means added and half means 1/2 of a number.

Here the unknown number is n.

5+n/2=11

5+0.5n=11

Subtract 5  on both sides

0.5n=6

Divide both sides by 0.5

n=12

Hence, option A is correct, 5+0.5n=11 is the equation and value of n is 12.

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Answer:

Let's call the number of soldiers that should leave the group as x.

We know that the group of 30 soldiers has enough food for 40 days. And we want to find the number of soldiers that should leave the group so that the food is enough for 100 days for remaining soldiers.

We can use the proportion of soldiers to days of food to find the number of soldiers needed for 100 days of food.

30/40 = (30-x) / 100

We can cross-multiply and then solve for x:

1200 = 30x - x^2

x^2 + 30x -1200 = 0

x = 20 or x = -40

20 is the valid solution, so 20 soldiers should leave the group.

So, 20 soldiers should leave the group so that the food is enough for 100 days for remaining soldiers.

Answer: 4/15

Step-by-step explanation: