Element X decays radioactively with half life of 6 minutes. If there are 220 grams of
Element X, how long,
decay to 26 grams?
to the nearest tenth of a minute, would it take the element to decay 26 grams?

Bori will run 10.5 miles in 75 minutes, using the concepts of unitary method.

A single unit's value can be determined from the values of multiple units, and multiple units' values can be determined from the values of single units using the unitary method. We typically utilise this technique for math calculations. This approach will be helpful to you while tackling problems involving ratio and proportion, algebra, geometry, etc.

Let us use the unitary method to solve this sum as well.

Bori can run 7 miles in 50 minutes.

This implies that, in 50 mins, Bori will run 7 miles.

Therefore, in 1 minute, Bori will run [tex]\frac{7}{50}[/tex] miles.

We have to find the number of miles Bori will run in 75 minutes.

Thus, in 75 mins, Bori will run [tex]\frac{7}{50} * 75[/tex] miles.

= 10.5 miles

Therefore, Bori will run 10.5 miles in 75 minutes.

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The vertex form of the parabolae equations are, respectively:

Parabolae are described by quadratic equations, whose standard and factor form are shown below:

Standard form

y = a · x² + b · x + c

Factor form

y = a · (x - r₁) · (x - r₂)

Where:

This equation can be modified into vertex form:

y - k = C · (x - h)²

Where:

The complete procedure to find vertex form is described below:

Now we proceed to find the vertex form of each expression:

Case 1

y = x² - 6 · x - 27

y = (x² - 6 · x + 9) - 36

y + 36 = (x - 3)²

Case 2

y = x² - 2 · x + 7

y = (x² - 2 · x + 4) + 3

y = (x - 2)² + 3

y - 3 = (x - 2)²

Case 3

y = x² + 10 · x

y + 25 = x² + 10 · x + 25

y + 25 = (x + 5)²

Case 4

y = x² + 14 · x + 50

y = (x² + 14 · x + 49) + 1

y = (x + 7)² + 1

y - 1 = (x + 7)²

Case 5

y = x² - 3 · x

y + 9 / 4 = x² - 3 · x + 9 / 4

y + 9 / 4 = (x - 3 / 2)²

Case 6

y = x² - 5 · x + 8

y = (x² - 5 · x + 25 / 4) + 7 / 4

y - 7 / 4 = (x - 5 / 2)²

Case 7

y = 2 · x² + 8 · x

y = 2 · (x² + 4 · x)

y + 2 · 4 = 2 · (x² + 4 · x + 4)

y + 8 = 2 · (x + 2)²

Case 8

y = 3 · x² + 6 · x + 10

y = 3 · (x² + 2 · x + 10 / 3)

y = 3 · (x² + 2 · x + 1) + 7

y - 7 = 3 · (x + 1)²

Case 9

y = 5 · x² + 40 · x - 6

y = 5 · (x² + 8 · x - 6 / 5)

y + 5 · 16 = 5 · (x² + 8 · x + 16) - 6

y + 86 = 5 · (x + 4)²

Case 10

y = (x + 5) · (x - 9)

y = x² - 4 · x - 45

y + 4 = (x² - 4 · x + 4) - 45

y + 49 = (x - 2)²

Case 11

y = (x - 4) · (x + 10)

y = x² + 6 · x - 40

y + 9 = (x² + 6 · x + 9) - 40

y + 49 = (x + 3)²

Case 12

y = (x + 2) · (x + 10)

y = x² + 12 · x + 20

y + 16 = x² + 12 · x + 36

y + 16 = (x + 6)²

Case 13

y = (x - 2) · (x - 6)

y = x² - 8 · x + 12

y + 4 = x² - 8 · x + 16

y + 4 = (x + 4)²

Case 14

y = (x + 1) · (x + 4)

y = x² + 5 · x + 4

y + 9 / 4 = x² + 5 · x + 25 / 4

y + 9 / 4 = (x + 5 / 2)²

Case 15

y = (x + 4) · (x - 5)

y = x² - x - 20

y + 1 / 4 = (x² - x + 1 / 4) - 20

y + 81 / 4 = (x - 1 / 2)²  

Case 16

y = 2 · (x + 2) · (x + 4)

y = 2 · (x² + 6 · x + 8)

y + 2 · 1 = 2 · (x² + 6 · x + 9)

y + 2 = 2 · (x + 3)²

Case 17

y = x · (x + 6)

y = x² + 6 · x

y + 9 = x² + 6 · x + 9

y + 9 = (x + 3)²

Case 18

y = 3 · (x + 4) · (x - 8)

y = 3 · (x² - 4 · x - 32)

y + 3 · 4 = 3 · (x² - 4 · x + 4) - 3 · 32

y + 12 = 3 · (x - 2)² - 96

y + 108 = 3 · (x - 2)²

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So Isabelle will have to multiply all the quantities in her recipe by a factor of 3.33 (or 333%) to increase the yield to 50 cups.

The percentage that Isabelle needs to multiply her original quantities by to increase the yield from 15 cups to 50 cups is known as the "scaling factor".

To find the scaling factor, you can divide the desired yield by the original yield and multiply by 100 to express it as a percentage:

Scaling factor = (50 cups / 15 cups) x 100% = 3.33 x 100% = 333%

So Isabelle will have to multiply all the quantities in her recipe by a factor of 3.33 (or 333%) to increase the yield to 50 cups.

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Case 2

The quadratic equation x² - 14 · x + 48 = 0 have the following roots: x₁ = 6 and x₂ = 8. (Correct choice: B)

Case 3

We need to add + 64 to both sides. (Correct choice: B)

Case 4

We need to add + 16 to both sides. (Correct choice: C)

In this problem we find three cases of quadratic equation that are not perfect square trinomials, these equations can be rewritten partially in that form by algebra properties. Completing the square offers a quick method to determine the roots of quadratic equations with integer coefficients. Now we proceed to determine the solutions corresponding to each case:

Case 2

x² - 14 · x + 48 = 0

x² - 14 · x + 49 = 1

(x - 7)² = 1

x - 7 = ± 1

x = 7 ± 1

The roots of the quadratic equation x² - 14 · x + 48 = 0 are x₁ = 6 and x₂ = 8, respectively.

Case 3

x² - 16 · x = - 21

x² - 16 · x + 64 = 64 - 21

(x + 8)² = 43

The first step consists in adding both sides by + 64.

Case 4

x² - 8 · x = 0

x² - 8 · x + 16 = 16

(x - 4)² = 16

The first step consists in adding both sides by + 16.

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As per the formula of surface area of cube, the length of the cube is 5.45 meters.

The general formula to calculate the surface area of the cube is calculated as,

=> SA = 6a²

here a represents the length of cube.

Here we know that  the side of a cube with a surface area of 180 square meters than a cube with the surface area of 120 square meters.

When we apply the value on the formula, then we get the expression like the following,

=> 180 = 6a²

where a refers the length of the cube.

=> a² = 30

=> a = 5.45

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So on solving the provided question we cans say that  sides of a square are given as 18 units, area = 324 cm sq.

A square is an equilateral quadrilateral with four equal sides and four equal angles according to Euclidean geometry. It is also known as a rectangle with two neighboring sides that have the same length. Having all four equal sides and all four equal angles, a square is an equilateral quadrilateral. 90 degree or straight angles are square angles. In addition, the square's diagonals are equally spaced and split at a 90-degree angle. a neighboring rectangle with two equal sides. a quadrilateral with four right angles and four sides of equal length. a parallelogram having two adjacent, equal sides that form a right angle. straight-sided rhombus.

here,

sides of a square are given as 18 units

so area will be s^2 18*18 = 324 cm sq.

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0.80 is the expected value of wei's ticket. This can be solved by using the concept of probability.

The word "probability" derives from the Latin word "probitatem," which means "credibility, likelihood," from the noun probabilis in the 14th century (see probable). The phrase was first used in a mathematical meaning in 1718.

A probability is a number that expresses the possibility or likelihood that a specific event will take place. Probabilities can be stated as proportions with a range of 0 to 1, or as percentages with a range of 0% to 100%.

As, we know

E(x) = x₁. p(x₁) + x₂ . p(x₂) + ....... + x(n). p(x(n))

From the table it is shown that,

E(x) = (68% × 0) + (24% × 0) + (6% × 5) + (2% × 25)

or, E(x) = 0.80

then the expected value of Wei's ticket is: 0.80

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The sine function that matches the graph is given as follows:

y = 3sin(π/5(x + 0.5))

The sine function for this problem is defined as follows:

y = Asin(B(x - C)) + D.

The parameters are described as follows:

The function has a minimum value of -3 and a maximum value of 3, for a difference of 6, hence the amplitude is obtained as follows:

2A = 6

A = 3.

The function has no vertical shift, as it oscillates between -1 x 3 = -3 and 1 x 3 = 3.

The period is of 10 units, hence the coefficient B is given as follows:

2π/B = 10

10B = 2π

B = π/5.

Due to it's midline, the function was shifted 0.5 units left, hence the coefficient C is given as follows:

C = -0.5.

Hence the function is defined as follows:

y = 3sin(π/5(x + 0.5))

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For the line segment MO, the ratio of the length of MN to length of NO is 3 : 7. The ratio of the length of MN to length of MO is 3 : 10.

Ratio or proportion is the relation describing the size, quantity, or the amount of two or more variables.

For example, the ratio of sugar and flour in a cake dough is 1 : 2. It means, if there is 200 grams of sugar in the dough, the amount of flour is 2 x 200 = 400 grams.

In the given problem, the ratio of length MN to the length NO is 3 : 7.

Notice that:

MO = MN + NO

Hence, the ratio of the length of MN to the length of MO is:

MN : MO = MN : (MN + NO)

MN : MO = 3 : (3 + 7)

MN : MO = 3 : 10

The picture in your question is missing. Most likely it was like the one in the attached picture.

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Receipt of May is 835

Net cash flow of April is 210

Cumulative balance of March is 240

Explanation

Net cash flow = Receipt - Expense

Receipts amount = Expenses+Net cash flow

Cumulative balance amount =Cumulative amount for April-Net cash flow for April

Answer:

We can solve the simultaneous equations by using substitution or elimination method. Here, we will use the substitution method:

x - 2y = 3 and x ^ 2 - y ^ 2 + 2x = 10

Solving the first equation for x, we get

x = 2y + 3

Now, substitute this value of x in the second equation

(2y + 3)^2 - y^2 + 2(2y + 3) = 10

Expanding the square on the left-hand side

4y^2 + 12y + 9 - y^2 + 4y + 6 = 10

Combining like terms

3y^2 + 16y + 3 = 0

Now, we can solve this equation by factoring or using the quadratic formula. Here, we will use factoring method:

3y^2 + 16y + 3 = 0

(3y + 3)(y + 1) = 0

So, y = -1 or y = -1

Now, we can substitute either value of y back into x = 2y + 3

For y = -1, x = 2(-1) + 3 = 1

For y = -1, x = 2(-1) + 3 = 1

So, the solutions of the simultaneous equations are x = 1 and y = -1 or x = 1 and y = -1

Answer:

If y = -5, x = -7

If y = -3, x = 2 1/3 or 7/3

Step-by-step explanation:

Alr alr,

x - 2y = 3

x = 2y + 3

Now, lets substitute that into the other equation,

x² - y² + 2x = 10

(2y + 3)² - y² + 2(2y+ 3) - 10 = 0

4y² + 9 + 12y - y² + 4y + 6 - 10 = 0

3y² + 16y + 5 = 0

3y² + 15y + y + 5 = 0

3y(y + 5) + y + 5 = 0

(3y + 1)(y + 5) = 0

y = -5, -1/3

Put both these values in the first equation, u will get,

x = 2y + 3

x = -10 + 3

x = -7

or

x = -2/3 + 3

x = 2 1/3

sorry for taking this long,

My internet gave out after I was about to add the answer.

pls mark as brainliest nevertheless. I don't know why i need it, but i need it. cheers

The total cost of the entertainment center after six years, if Zebina must pay it off, would be $9,203.19.

When a person purchases an item using a deferred payment plan with interest, the total cost of the item will be greater than the original purchase price due to the added interest.

To calculate the total cost of the entertainment center after six years, we need to use the formula for compound interest:

A = P(1 + r/n)^(nt)

where A is the total cost, P is the original purchase price, r is the annual interest rate (expressed as a decimal), n is the number of times the interest is compounded per year, and t is the number of years.

In this case, P = $2,798, r = 0.2195 (21.95% expressed as a decimal), n = 1 (because the interest is compounded annually), and t = 6. Plugging these values into the formula gives:

A = 2798(1 + 0.2195)^6

A = $9,203.19

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Therefore , the solution of the given problem of probability comes out to be  1/ ( 1+ y)x².

Evaluating the chance that a claim is true or that a particular event will happen is the focus of the mathematical field known as probability theory. A chance can be represented by any number between 0 and 1, with 1 denoting certainty and 0 typically expressing the possibility of occurrence. The possibility or possibility that a happening will occur is represented diagrammatically as probability. Figures 0 and 1, percentage ranging 0% - 100%, and some other characters can be used to represent probabilities. the percentage of times, out of all possible possibilities, that an incidence occurred within a good set with equally likely options.

Here,

Probability for X (for x≥0)

=> [tex]\int\limits^{ \infty}_{ 0}[/tex]x e⁻ˣ⁽¹⁺ⁿ⁾ dy

=> -e⁻ˣ   [tex]\int\limits^{ \infty}_{ 0}[/tex]de⁻ˣⁿ

=>e⁻ˣ

Probability for X exceed 3

=>   [tex]\int\limits^{ \infty}_{ 3}[/tex]f(x)dx

=>    [tex]\int\limits^{ \infty}_{ 3}[/tex]e⁻³dx

=> e⁻³

Probability for y ≥ 0

=>   [tex]\int\limits^{ \infty}_{ 3}[/tex]xe⁻ˣ⁽¹⁺ⁿ⁾ dy

=>  [tex]\int\limits^{ \infty}_{ 3}[/tex]x/1 + y d e⁻ˣ⁽¹⁺ⁿ⁾ = 1/ ( 1+ y)x²

Therefore , the solution of the given problem of probability comes out to be 1/ ( 1+ y)x².

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The  expression that shows how many minutes it will take to complete an order, assuming there are x parts in an order is 2x+10y = x

The statement states that  it takes 2 minutes to manufacture each part and 10 minutes to pack all the parts for an order.

Also, it is stated that there are  x parts in an order

This implies that  2(x) + 10(y) = x

Opening the brackets to have

2x + 10y = x

This is to say that 2 minutes of manufacture and 10 minutes of packing will give all the parts.

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While some College Board math sections permit all students to use a calculator, other math portion do not. Students can prayer the use of a four-function calculator for use on Non calculator sections.

Four-function calculators are basic calculators that have functions limited to subtraction, addition, multiplication, square roots, division, and percentage.

Four-function calculators can only be used on test portion that need math calculations.

They must be put away during non-mathematical part.

Board policy on use of a calculator may vary by exam. Check by reading calculator rules for the PSAT/NMSQT and PSAT 10 and the SAT or visiting AP Students to read calculator policies for specific AP exams.

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On solving the provided question we can say that  Probability of  Red  * Second  Draw Probability of  Red  = [tex]3 / 10 * 2 / 9 = 6 / 90 = 1 / 15[/tex]

Probability theory, a subfield of mathematics, gauges the likelihood of an occurrence or a claim being true. An event's probability is a number between 0 and 1, where approximately 0 indicates how unlikely the event is to occur and 1 indicates certainty. A probability is a numerical representation of the likelihood or likelihood that a particular event will occur. Alternative ways to express probabilities are as percentages from 0% to 100% or from 0 to 1. the percentage of occurrences in a complete set of equally likely possibilities that result in a certain occurrence compared to the total number of outcomes.

Let the number of  red balls  = x    

[tex][x / 10] * [ (x - 1) / 9 ] = 1/15 \\x(x - 1) / 90 = 1/15 \\x ( x - 1) = 6 \\x^2 - x - 6 = 0 \\(x -3) ( x + 2) = 0 \\x = 3 or x = -2[/tex]

here are 3  red balls

Probability of  Red  * Second  Draw Probability of  Red  

[tex]3 / 10 * 2 / 9 = 6 / 90 = 1 / 15[/tex]

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keeping in mind that parallel lines have exactly the same slope, let's check for the slope of the equation above

[tex]x-2y=17\implies -2y=-x+17\implies y=\cfrac{-x+17}{-2} \\\\\\ y=\stackrel{\stackrel{m}{\downarrow }}{\cfrac{1}{2}} x-\cfrac{17}{2}\impliedby \begin{array}{|c|ll} \cline{1-1} slope-intercept~form\\ \cline{1-1} \\ y=\underset{y-intercept}{\stackrel{slope\qquad }{\stackrel{\downarrow }{m}x+\underset{\uparrow }{b}}} \\\\ \cline{1-1} \end{array}[/tex]

so we're really looking for the equation of a line whose slope is 1/2 and that it passes through (-10 , 4)

[tex](\stackrel{x_1}{-10}~,~\stackrel{y_1}{4})\hspace{10em} \stackrel{slope}{m} ~=~ \cfrac{1}{2} \\\\\\ \begin{array}{|c|ll} \cline{1-1} \textit{point-slope form}\\ \cline{1-1} \\ y-y_1=m(x-x_1) \\\\ \cline{1-1} \end{array}\implies y-\stackrel{y_1}{4}=\stackrel{m}{ \cfrac{1}{2}}(x-\stackrel{x_1}{(-10)}) \implies y -4= \cfrac{1}{2} (x +10) \\\\\\ y-4=\cfrac{1}{2}x+5\implies {\Large \begin{array}{llll} y=\cfrac{1}{2}x+9 \end{array}}[/tex]

Answer:

Step-by-step explanation:

D. never

A parameter is a fixed value that represents a characteristic of a set population, such as the population mean or population proportion. It is a fixed value that is true for the entire population, it is calculated using all the data of the population. For example, the mean of the height of all adults in a country is a parameter. Since it is based on all the data, it is not an estimation, it is the true value of the population. Therefore, a parameter does not change, it is a fixed value for a set population.

Answer:

15

Step-by-step explanation:

x + 2y

Putting x = 7, y = 4, we have

7 + 2(4)

= 7 + 8

= 15

Hope it helps.

If you have any query, feel free to ask.

Step-by-step explanation:

It's saying x = 7 and y = 4, which means everywhere there is an x, you'll place a 7 and everywhere there is a y, you'll place a 4

x + 2y turns into (7) + 2(4)

Now we can answer the bottom question

2(4) = 8

7 + 8 = 15

so...

If x =7 and y=4, then x+2y= 15

The three (3) true statements about the quadratic function and its graph include the following:

A. The value of f(–10) = 82

B. The graph of the function is a parabola.

D. The graph contains the point (20, –8).

Generally speaking, the graph of a quadratic function would always form a parabolic curve because it is a u-shaped. For this quadratic function, the graph is a upward parabola because the coefficient of x² is positive and the value of "a" is greater than zero.

Next, we would determine the other true statements about the graph of this quadratic function:

At point (-10, 82), we have:

Quadratic function, f(x) = 1/5 x² – 5x + 12

Quadratic function, f(x) = x²/5 – 5x + 12

Quadratic function, f(-10) = -10²/5 – 5(-10) + 12

Quadratic function, f(-10) = 82

At point (20, -8), we have the following:

Quadratic function, f(x) = 1/5 x² – 5x + 12

Quadratic function, f(x) = x²/5 – 5x + 12

Quadratic function, f(20) = 20²/5 – 5(20) + 12

Quadratic function, f(20) = -8

In conclusion, we can logically deduce that the graph of this quadratic function does not contain the point (0, 0) as shown in the image attached below.

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Complete Question:

Consider the quadratic function f(x) = 1/5x² – 5x + 12. Which statements are true about the function and its graph? Select three options.

The value of f(–10) = 82

The graph of the function is a parabola.

The graph of the function opens down.

The graph contains the point (20, –8).

The graph contains the point (0, 0).

The first number will be 8 and the second number will be 7.

The allocation of weights to the important variables that produce the calculation's optimum is referred to as a direct consequence.

The sum of the two numbers is 15. The difference between five times the first number and Three times the second number is 19.

Let the first number be 'x' and the second number be 'y'. Then the equations are given as,

x + y = 15                 ...1

5x - 3y = 19             ...2

From equations 1 and 2, then we have

5x - 3(15 - x) = 19

5x - 45 + 3x = 19

8x = 64

x = 8

Then the value of the variable 'y' is given as,

8 + y = 15

y = 15 - 8

y = 7

The first number will be 8 and the second number will be 7.

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The cost of a 3.4 mile ride when a taxi charges a base fee of $3.00 and $0.15 for every mile of the ride is $3.51.

Therefore the answer is $3.51

The cost of a 3.4 mile ride can be calculated by multiplying the distance of the ride by the cost per mile and adding the base fee. Here base fee is the fixed charge and $0.15 is the variable charge that depend on distance covered.

To calculate the cost of the ride:

= (3.4 miles * $0.15 per mile) + $3.00 base fee

= $0.51 + $3.00

= $3.51

So, a 3.4 mile ride would cost $3.51.

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Answer:

Step-by-step explanation:

x=#of minutes

y= cost

Laceys equation: y=3x+398

Sebastions equation: y=x+466              

intersection (34, 500)

itll take 34 minutes and cost $500

The largest possible sample you can take from a population of 5000 football fans and still be able to calculate the standard deviation of the sampling distribution is the entire population, or 5000 people.

The standard deviation of a population is denoted as σ and can be calculated using the formula:

σ = √(Σ(x - μ)^2 / N)

where

x is each individual value in the population

μ is the mean of the population

N is the size of the population. In this case 5000 people.

When it comes to statistics and sampling, the larger the sample size, the more accurate and reliable the results will be. However, in some cases, such as when studying a small population, obtaining a large sample may not be possible.

In the case of a small town with only 5000 football fans, it would be impossible to take a sample larger than the entire population. Therefore, the largest possible sample size would be 5000 and this would allow us to calculate the standard deviation of the sampling distribution, which is a measure of the spread of the data.

This can give us an idea of how much variation there is within the population and how much confidence we can have in the results, but without more information such as the individual values and mean of the population, it is rather impossible to calculate the standard deviation.

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The difference between the length and width of the garden is 2.55 yards.

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

Given that jan created a garden that was 8.5 yards long and 5.95 yards wide.

Length=8.5 yards

Width=5.95 yards.

We need to find the difference between the length and width of the garden.

8.5-5.95

Eight point five minus five point nine five

2.55

Hence,  the difference between the length and width of the garden is 2.55 yards.

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Answer:

y=10

Step-by-step explanation:

18/9=1/2

so

x/5=1/2

Answer: The value of y will be 10 when the value of x is 5.

x and y are directly proportional to each other so,we can write  the given relation in mathematical form as:

y=kx

k is any constant

We are given: The value of y is 18 when value of x is 9:

x=9 and y=18

Putting the value of x and y in the above equation , we get:

18=9k

 k=18/9=2

 k=2

So now we have the proportional relation(k) between x and y.

Again,

we have been given the value of x=5 and we are asked the value of y using same proportional relation.

y=k(5)

y=2(5)=10

Hence the value of y the value of x is 10.

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The equation of the curve in the XY-plane that passes through (0,3) and whose tangent line at a point (x,y) has slope 2x/y^2 is y^2 = 2x*F(x,y) or y^2 = 2x*F(x,y) + C where C is constant.

The equation of a curve in the xy-plane is given by F(x,y) = 0. To find such a curve that passes through the point (0,3) and whose tangent line at a point (x,y) has a slope of 2x/y^2, we can use the method of implicit differentiation.

First, we can find the equation of the tangent line at a point (x,y) on the curve by computing the derivative of F(x,y) with respect to x and setting it equal to 2x/y^2. This gives us:

F_x(x,y) = 2x/y^2

Next, we can use the fact that the curve passes through the point (0,3) to set up the following equation:

F(0,3) = 0

Solving for F(x,y) in terms of x and y and substituting in the equation for F_x(x,y) gives the implicit equation of the curve is

y^2 = 2x*F(x,y) or y^2 = 2x*F(x,y) + C where C is constant

This is the equation of a curve in the XY-plane that passes through the point (0,3) and whose tangent line at a point (x,y) has a slope of 2x/y^2.

Therefore, The equation of the curve in the XY-plane that passes through (0,3) and whose tangent line at a point (x,y) has slope 2x/y^2 is y^2 = 2x*F(x,y) or y^2 = 2x*F(x,y) + C where C is constant.

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