HELP HELP PLEASE ITS DUE at 8:00 ITS LIKE 7:29 HELPP

Answer:

A

Step-by-step explanation:

The product of expression 2x² - 3xy + y² and 2x - 4y will be;

⇒ 4x³ - 14x²y + 14xy² - 4y³

Option c is true.

What is Multiplication?

To multiply means to add a number to itself a particular number of times. Multiplication can be viewed as a process of repeated addition.

Given that;

The equations are,

2x² - 3xy + y² and 2x - 4y

Now,

The product of the expressions are find as;

⇒ (2x² - 3xy + y²) × (2x - 4y)

⇒ 2x²×2x - 2x² × 4y - 3×2×x²×y + 3xy×4y + y²×2x - y²×4y

⇒ 4x³ - 8x²y - 6x²y + 12xy² + 2xy² - 4y³

⇒ 4x³ - 14x²y + 14xy² - 4y³

Thus, The product of expression 2x² - 3xy + y² and 2x - 4y will be;

⇒ 4x³ - 14x²y + 14xy² - 4y³

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Answer:

y = x + 5

Step-by-step explanation:

x - y = - 5

-y = -x - 5

-(-y = - x - 5)

y = x + 5

We can calculate the product of 5/8 and 4 to be 5/2 using multiplication.

Multiplication is one of the four basic mathematical operations, along with addition, subtraction, and division.

The result of a multiplication operation is a product.

There are four different methods for multiplying: addition, long multiplication, grid multiplication, and drawing lines.

So, we have:
5/8 and 4

5/8 is in the form p/q which represents the fraction that must be multiplied by 4.

Now, calculate the product as follows:

5/8 * 4

5/2

Therefore, we can calculate the product of 5/8 and 4 to be 5/2 using multiplication.

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To solve the differential equation:

y(3xy' + 3)dx + (3x^2y + 3y')dy = 0

We can see that this is not in the form of a separable differential equation, so we need to use an integrating factor. To do this, we first find the coefficients of y and y':

M(x,y) = 3xy' + 3

N(x,y) = 3x^2y + 3y'

Then, we calculate the partial derivative of N with respect to x:

∂N/∂x = 6xy

Now, we can find an integrating factor by dividing both sides by M:

(y' + 1/y)dx + (3x/y)dy = 0

Multiplying both sides by the integrating factor u(x):

u(x)(y' + 1/y)dx + u(x)(3x/y)dy = 0

where u(x) = e^(int 3x/y dx)

Integrating w.r.t. x to find the exponential factor:

ln|u(x)| = ∫ 3x/y dx

=> ln|u(x)| = 3ln|x| + C1

=> u(x) = e^(3ln|x|+C1)

=> u(x) = e^(ln|x^3|+C1)

=> u(x) = K|x^3|

where K = e^C1

Multiplying both sides by the integrating factor:

Kx^3(y' + 1/y)dx + K3x^4dy/y = 0

d/dx(Kx^3y) = 0

Integrating both sides w.r.t. x:

Kx^3y = C2

where C2 is the constant of integration.

Therefore, the solution to the differential equation is:

Kx^3y = C2

where K and C2 are constants.

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Answer:

Step-by-step explanation:

Depending on the tools available to your 11y.o., it's a typical question for linear inequalities.

Where a,b,c are the # of 1,15,50 coins given by the buyer, and d,e,f the # of coins given back by the seller.

1×a + 15×b + 50×c > 1×d + 15×e + 50×f

a+b+c+1>=d+e+f

a+b+c >=2

Now, there are other clues in the text :

If the seller gives back money, then you didn't pay with 1's, otherwise, it means you overpay and you could have given fewer coins. So a=0.

Similarly, the seller cannot give you back a coin of 50, otherwise, you could have given fewer coins as the buyer. So f=0.

So that gives :

15×b + 50×c > 1×d + 15×e

b+c+1>=d+e

b+c >=2

From that point on, there is only a handful of scenarios to test.

For the random variable X with the given cumulative distribution function (cdf), we need to find the mean, variance, median, and mode. Additionally, for the random variable X with the given probability density function (pdf), we need to provide an algorithm to generate X using a standard uniform random variable U and find the pdf of Y = X^2.

(a) To find the mean of X, we integrate x times the probability density function (pdf) over its support. Similarly, to find the variance, we calculate the second moment around the mean. The median is the value of x for which the cumulative distribution function (cdf) equals 0.5. The mode is the value of x at which the pdf reaches its maximum.

(b) (i) To generate X using a standard uniform random variable U, we can use the inverse transform sampling method. First, we generate U, which is uniformly distributed between 0 and 1. Then, we calculate X by applying the inverse of the cumulative distribution function (cdf) of X to U.

(ii) To find the probability density function (pdf) of Y = X^2, we use the transformation technique. We substitute Y = X^2 into the pdf of X and apply the change of variables to obtain the pdf of Y.

These calculations and transformations are fundamental in probability theory and statistics for analyzing and understanding the properties and behavior of random variables. They allow us to derive important statistical measures, generate random variables from known distributions, and explore the relationship between different random variables through transformations.

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Answer:

-1

Step-by-step explanation:

3-1=2

2-1=1

There are two cases of collisions : Key “23” and “27NLY” collide at slot “1”.

Key “27NLY” and “a” collide at slot “(9+L+Y) mod 11”.

Given a sequence of 5 element keys < 23, I 38, 27 >, for searching task: H(k) = 3, 26, 16, 38, 27 mod 11. The steps and calculations are shown in the table below:

Here are the steps to insert the keys into a hash table of 11 slots using the hash function H(k) = 3, 26, 16, 38, 27NLY mod 11:

Key                                  Hash Value                                             Slot

23                                    23 mod 11 = 1                                             1

38                                    38 mod 11 = 5                                     5

27NLY                    (3 + 26 + 16 + 38 + (27 * N)

                               + L + Y) mod 11 = (86 + N

                                     + L + Y) mod 11                       (86 + N + L + Y) mod 11

N = 13

-> (86 +

N + L +

Y) mod

11= (86

+ 13+ L

+ Y) mod

11 = (99+L

+Y) mod

11 = (9+

L+Y) mod

11 -> Slot:

(9+L+Y)

mod 11  

a                                              a mod 11 = a                                        a

The cases of collision are:

Key “23” and “27NLY” collide at slot “1”.

Key “27NLY” and “a” collide at slot “(9+L+Y) mod 11”.

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(a) The time taken and the distance covered at a speed of 60 km/h are 3 hours and 180 km, respectively.

(b) There is no valid solution for the monthly income of each person in part (b) of the problem.

(a) To solve part (a) of the problem, let's break it down step by step.

Let's assume the time taken to cover the first part of the journey at a speed of 60 km/h is 't' hours. Since distance equals speed multiplied by time, we have:

Distance covered in the first part = 60t km

Now, the remaining distance to be covered is (555 - 60t) km.

The speed is then increased by 15 km/h, so the new speed is 60 + 15 = 75 km/h.

The time taken to cover the remaining distance at the increased speed is 8 - t hours (as the total time taken is 8 hours).

Using the formula distance = speed multiplied by time, we can express the remaining distance in terms of the new speed and time:

Distance covered in the second part = 75(8 - t) km

We know that the total distance is 555 km, so we can set up an equation:

60t + 75(8 - t) = 555

Simplifying the equation:

60t + 600 - 75t = 555

-15t = -45

Dividing both sides by -15:

t = 3

Therefore, it took 3 hours to cover the first part of the journey at a speed of 60 km/h.

To find the distance covered at 60 km/h, we substitute the value of 't' into the equation for the first part distance:

Distance covered at 60 km/h = 60t = 60 * 3 = 180 km

So, the time taken and the distance covered at a speed of 60 km/h are 3 hours and 180 km, respectively.

(b) Let's solve part (b) of the problem:

Let the monthly income of the two persons be 4x and 3x, respectively (since their incomes are in a ratio of 4:3).

We are given that each person saves Rs600 per month, so we can set up an equation:

4x - 600 = 3x - 600

Simplifying the equation:

x = 0

It seems we have reached an inconsistency. The value of 'x' is zero, which means both persons have zero income according to the equation. However, this contradicts the given information that they save Rs600 per month.

Therefore, there is no valid solution for part (b) of the problem.

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Answer:

5,382 yards

Step-by-step explanation:

To find the area, just multiply the width and length together. Don't forget the unit!!

Answer: Is 86 your welcome have a nice labor day

Step-by-step explanation:

Answer:

The answer is C

Step-by-step explanation:

25^2 = 625

20^2 = 400

625+400 = 1025

sqrt(1025) is the answer

The probability that all three pairwise distances between the points are less than the radius of the circle is 1/12.

What is probability?

The area of mathematics known as probability deals with numerical representations of the likelihood that an event will occur or that a statement is true. An event's probability is a number between 0 and 1, where, roughly speaking, 0 denotes the event's impossibility and 1 denotes certainty.

Since it doesn't matter where the first point is picked, it can be placed anywhere on the circle.

The following point must be within an arc of 60 degrees on either side, providing a total of 120 degrees and a chance of 1/3. The final point must be situated within 60 degrees of the first two.

If the first two points are apart by 60 degrees, the third point can be placed within an arc with a minimum area of freedom of 60 degrees and a chance of 1/6. If the first two points are the same, the third point can be placed with a maximum degree of freedom of a 120 degree arc and a 1/3 probability.

The chance changes linearly with increasing distance from the first point, up to a maximum of 60 degrees.

As a result, we may find 1/4, the average likelihood we can position the third point based on a fluctuating second point, by averaging the probabilities at either end.

Total probability is 1 × 1/3 × 1/4 = 1/12.

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Answer:

\(y=2x+3\)

Step-by-step explanation:

The slope-intercept form is \(y=mx+b\), where \(m\) is the slope and \(b\) is the y-intercept.

\(y=mx+b\)

Using the slope-intercept form, the slope is 2.

\(m=2\)

So in order for us to find an equation that is parallel, the slopes must be equal. We need to find the parallel line using the point-slope formula.

We use the slope 2 and a given point \((2,7)\) to substitute for x1 and y1 in the point-slope form \(y-y^1 = m (x-x^1)\), which is derived from the slope equation: \(m=\frac{y2-y1}{x2-x1}\)

Now we simplify the equation and keep it in point-slope form.

\(y-7=2\)  × \((x-2)\)

Simplify \(2\) × \((x-2)\)

\(y-7=2x-4\)

\(Rewrite.~y-7=0+0+2~x~(x-2)\)

\(Simplify~ by~adding~zeros.~y-7=2 ~x~(x-2)\)

\(Apply~the~distributive~property.~y-7=2x+2~X~-2\)

\(Multiply~2~by~-2.~y-7=2x-4\)

Last, We move all terms not containing y to the right side of the equation.

Add 7 to both sides of the equation.

\(y=2x-4+7\)

Add −4 and 7 and your answer will be: \(y=2x+3\)

Step-by-step explanation:

4

Add all to get 32

Divide by the number of items which is 8

answer =4

Answer: No, the mean of the data set is 4

(5+ 8+ 1+ 7+ 4+ 3+ 2+ 2)/8

= 32/8

=4

The domain of the function \(f(x) = \sqrt{\frac{1}{3}x + 2\) is (d) x  ≥ -6

From the question, we have the following parameters that can be used in our computation:

\(f(x) = \sqrt{\frac{1}{3}x + 2\)

Set the radicand greater than or equal to 0

So, we have

1/3x + 2 ≥ 0

Next, we have

1/3x  ≥ -2

So, we have

x  ≥ -6

Hence, the domain of the function is (d) x  ≥ -6

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Answer:

False

all rational numbers can out be integers because for example

\(\frac{5}{-3}\) is rational number but not an integer

False. In a static method of a class, you cannot use the "this" keyword to reference instance variables or instance methods of the same class.

A static method belongs to the class itself, not to any particular instance of the class, so it cannot access instance-specific information. Instead, you would need to use the class name followed by the variable name to access any static or instance variables within a static method of that same class. For example, if the class had an instance variable called "f" and a static method called "myStaticMethod", you could reference the instance variable from within the static method using "ClassName.f". It is important to note that if you attempt to reference an instance variable using "this.f" within a static method, you will receive a compilation error.

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Answer:

Open circle on -9 pointing to the left

Step-by-step explanation:

<------------0__|__|__|_|__|__|_|__|_|_|_|_|_|_|____>

 -10         -9   -8 -7 -6 -5 -4 -3 -2 -1 0 1 2 3 4 5

The area of the field is 10,765.44 square meters.

Given that:

Diameter, d = 72 m

Width, W = 72 m

Length, L = 93 m

The area of a two - dimensional figure is the area that its perimeter encloses. The quantity of unit squares that occupy a closed figure's surface is its region.

The area of the field is calculated as,

A = (π/4)d² + W·L

A = (3.14 / 4) x 72² + 72 x 93

A = 4,069.44 + 6,696

A = 10,765.44 square meters

The area of the field is 10,765.44 square meters.

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Answer:

yeah guys answerrrrrr!!!!

Step-by-step explanation:

like dam show some respect

The laptop will be worth $0.001286 after 15 years if its worth becomes 1/3 each year.

We can solve this problem by using the formula for geometric sequences,

an = a₁r^(n-1), here in this case, an is the worth of the laptop after n years, r is the rate at which the worth is changing that 1/3 in this case and a₁ is the value of the laptop currently. Substituting the given values, we get:

a₁₅ = 600(1/3)¹⁵⁻¹

a₁₅ = 600(1/3)¹⁴

a₁₅ = 600x0.0000021433

a₁₅ = 0.001286

Therefore, after 15 years, the laptop is worth approximately $0.001286.

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  Among the given options (A, B, C, D), the correct population regression model when k = 2 is option D: Y = β0 + β1X1 + β2X2 + e.

In a population regression model, we are interested in modeling the relationship between a dependent variable (Y) and one or more independent variables (X1, X2, etc.). The model equation consists of the regression coefficients (β0, β1, β2, etc.) that represent the effect of each independent variable on the dependent variable, and the error term (e) that captures the unexplained variation in the data.
Among the given options, only option D includes all the necessary components of a population regression model with two independent variables (k = 2). It includes the dependent variable Y, the regression coefficients β0, β1, and β2 for the independent variables X1 and X2, respectively, and the error term e.
Options A, B, and C are incorrect because they either omit the error term or have an incomplete equation. The error term is crucial in accounting for the unobserved factors and random variation in the relationship between the variables.
Therefore, the correct population regression model when k = 2 is option D: Y = β0 + β1X1 + β2X2 + e.

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The student covers a total distance of 22.05 kilometers in a week's time, walking between the park and the house each day.

To find the total distance covered by the student in a week's time, we need to calculate the distance covered in one round trip (from the house to the park and back) and then multiply it by the number of round trips in a week.

Given that the difference between the park and house is 1 kilometer and 575 meters, we can convert it to a total distance of 1.575 kilometers.

In a round trip, the student covers twice the distance between the park and the house, which is 1.575 kilometers * 2 = 3.15 kilometers.

Now, we need to determine how many round trips the student makes in a week. Let's assume the student makes one round trip each day.

Since there are 7 days in a week, the total distance covered by the student in a week's time is 3.15 kilometers * 7 = 22.05 kilometers.

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Answer: The answer will be D

Step-by-step explanation: I think the answer will be C because you can multiply this as I did to get the answer so its C

The slope of the rapids is -0.067

Kannanaski Rapids drops  62 ft vertically

The horizontal distance of 920 ft.

tan θ is a commonly used trigonometric function along with other 5 functions. tan θ is also called as law of tangent. The tangent formula for a right-angled triangle can be defined as the ratio of the opposite side of a triangle to the adjacent side. It can also be represented as a ratio of the sine of the angle to the cosine of the angle.

Slope of Rapids= tanθ= \(\frac{y}{x}=\frac{-62}{920} \\\)

=-0.067

Therefore, the slope of rapids is -0.067.

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Among all unbiased estimators which are weighted averages of Y₁, ..., Yₙ, the sample mean as an estimator of population mean is an estimator with lower sampling variances.

The sample mean is known to be an unbiased estimator of the population mean.

Which means that on average, it provides an estimate that is equal to the true population mean.

However, when considering estimators that are weighted averages of the observations.

The sample mean tends to have lower sampling variances compared to other unbiased estimators.

Lower sampling variance is desirable because it indicates less variability in the estimates obtained from different samples.

A lower sampling variance implies that the sample mean is likely to be closer to the population mean, providing a more precise estimate.

Therefore, among unbiased estimators that are weighted averages, sample mean stands out as having a lower sampling variance.

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Answer:

41.7%

Step-by-step explanation:

24/10=41.66...

Answer:

Wut-

Step-by-step explanation:

What is this? is this Gibberish?