help me with this please

Answer:

B

Step-by-step explanation:

the y-coordinate of the vertex will be the max or min value of the quadratic function

hope this helps!

This research team is conducting a prospective longitudinal study, as they collect data over a 30-year period.

The research team is conducting a prospective longitudinal study. They aim to examine the changes in attitudes toward intercultural communication over time in a specific population born between 1985-1990. By collecting data at three different time points (in 2000, 2010, and 2020), they can track the development of attitudes as individuals in the sample age.

This study design allows the researchers to observe changes within the same individuals over an extended period, providing valuable insights into long-term trends and developmental trajectories. Since the data collection occurs at predetermined time intervals, starting from a relatively young age and following participants as they grow older, this study can be categorized as a prospective longitudinal study.

It offers a comprehensive view of how attitudes toward intercultural communication evolve over the span of 30 years in the specified birth cohort.

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First, we have to find the percent that went to social issue on saturday

So, with this we can calculate the Sunday amount

399 people are expected to go to Social Issues

Given:

To Determine: The equation describing the relationship between y and x

Solution:

Step 1: Introduce the constant into the given variation

Step 2: Substitute the given values of y and x to find the constant

Step 3: Substitute k into the equation

Hence, the equation describing the relationship between x and y is

y = 9x

Marco's data points have a better line of best fit based on a comparison of Correlation coefficients.

Marco is incorrect in stating that his data points have a better line of best fit than Landon based solely on the comparison of correlation coefficients. The magnitude of the correlation coefficient alone does not determine the quality or strength of the line of best fit.

The correlation coefficient measures the strength and direction of the linear relationship between two variables. It ranges from -1 to +1. A positive correlation coefficient (such as 0.85) indicates a positive linear relationship, while a negative correlation coefficient (such as -0.85) indicates a negative linear relationship. The closer the correlation coefficient is to -1 or +1, the stronger the relationship. A correlation coefficient of 0 indicates no linear relationship.

In the case of Landon and Marco, both correlation coefficients have the same absolute value of 0.85, suggesting a strong linear relationship. However, the negative sign for Landon's correlation coefficient indicates a negative linear relationship, while the positive sign for Marco's correlation coefficient indicates a positive linear relationship.

The comparison between -0.85 and 0.85 should not be made in terms of greater or lesser quality of the line of best fit. The choice of a positive or negative correlation depends on the context and nature of the variables being analyzed.

The appropriateness of the line of best fit and the goodness-of-fit of the model should be evaluated based on additional factors such as the data points' distribution around the line, residuals, and the overall context of the analysis. These aspects provide more comprehensive insights into the quality of the fit and the reliability of the relationship being represented.

Therefore, Marco's data points have a better line of best fit solely based on a comparison of correlation coefficients. The interpretation of the correlation coefficient requires considering the nature of the variables and other factors influencing the analysis.

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Answer:

I LOST ALL MY POINTS NOOOOOO

The intersection point is (4,-3) which is the solution of given linear equations.

What is a linear equation, exactly?

A linear equation is an equation that describes a straight line in a two-dimensional plane or a plane in higher dimensions. In its most basic form, a linear equation takes the form: y = mx + b,  where y and x are variables, m is the slope of the line, and b is the y-intercept. The slope of a line represents how steep it is, and it is calculated as the change in y divided by the change in x between any two points on the line.

Now

For equation y=-(1/2)x-1

For  x        y is

      1         -3/2

      2        -2

      3         -5/2

      4          -3

and for equation y=(1/4)x-4

For   x         y  is

       1         -15/4

      2        -7/4

      3         -13/4

      4          -3

Hence,

           After making graph the intersection point is (4,-3) which is the solution of given equations.

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Right question:-

Create a graph to solve these linear equations y=-1/2x-1 and y=1/4x-4.

Answer:

x = 54.

Step-by-step explanation:

-2/9x = -12

2/9x = 12

2x = 108

x = 54.

Hope this helps!

Answer:

\(-16\)

Step-by-step explanation:

\(f(5)=4(5)-1=19 \\ \\ g(5)=2^5+3=35 \\ \\ (f-g)(5)=f(5)-g(5)=19-35=-16\)

A multiple regression model with 200 data points and three independent variables has 196 degrees of freedom for testing the statistical significance of individual slope coefficients. Here's an explanation in 150 words:

In a multiple regression model, the degrees of freedom for testing the statistical significance of individual slope coefficients are calculated as the total number of observations (n) minus the number of independent variables (k) and minus one for the intercept term. In this case, we have 200 data points (n) and three independent variables (k), so the calculation would be:

Degrees of freedom = n - (k + 1)

Substituting the values into the formula:

Degrees of freedom = 200 - (3 + 1) = 200 - 4 = 196

Therefore, this multiple regression model has 196 degrees of freedom for testing the statistical significance of individual slope coefficients.

This measure helps determine the uncertainty around the estimated coefficients and is used in hypothesis testing to determine whether there is a significant relationship between the independent variables and the dependent variable.

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Answer:

\(8)79 + .3y |1| 5131x - 2884 \frac{ {8 - { { - 44 - {516}^{ |?| } }^{?} }^{?} }^{2} }{?} 5 - {1 {y {1 {40091 - \times \frac{?}{?} }^{?} }^{2} }^{2} }^{2} 444 = .3 = 547 - 274\)

Answer: C). Y = 3x + 4

Step-by-step explanation: Substitute -2 for x then find the result for Y.

Answer:

Three-fifths of them can be used for movies that take place in the 1700s and 15% of them can be used for movies in the civil war era

Answer:

The total amount saved after w weeks is $15

Step-by-step explanation:

The exact value of the definite integral is 1/9.

we assume that the integrand is actually \(y^2 \times y^6,\) which can be simplified to \(y^8.\)

To evaluate the definite integral ∫ from 0 to 1 of \(y^8\) dy using the fundamental theorem of calculus, we first need to find the antiderivative of \(y^8.\)

Using the power rule of integration, we can find that:

\(\int y^8 dy = y^9 / 9 + C\)

where C is the constant of integration.

Then, we can evaluate the definite integral using the fundamental theorem of calculus:

\(\int from 0 $ to 1 of y^8 dy = [y^9 / 9]\) evaluated from 0 to 1

\(= (1^9 / 9) - (0^9 / 9)\)

= 1/9.

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The fundamental theorem of calculus states that if a function is continuous on a closed interval, and if we find its antiderivative, we can evaluate the definite integral over that interval by subtracting the value of the antiderivative at the endpoints.

Applying this theorem to the integral ∫10(y2 y6)dy, we first find the antiderivative of y2 y6, which is y7/7. Evaluating this antiderivative at the endpoints (1 and 0), we get (1/7) - (0/7) = 1/7. Therefore, the exact value of the definite integral is 1/7.
To evaluate the definite integral using the Fundamental Theorem of Calculus, follow these steps:

1. Find the antiderivative of the integrand: The integrand is y^2, so its antiderivative is (1/3)y^3 + C, where C is the constant of integration.

2. Apply the Fundamental Theorem: The theorem states that the definite integral from a to b of a function is equal to the difference between its antiderivative at b and at a. In this case, a = 0 and b = 6.

3. Calculate the antiderivative at b: (1/3)(6)^3 + C = 72 + C.

4. Calculate the antiderivative at a: (1/3)(0)^3 + C = 0 + C.

5. Subtract the antiderivative at a from the antiderivative at b: (72 + C) - (0 + C) = 72.

So, the exact value of the definite integral is 72.

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The given function is f(x) = (4-x)/29. We need to find the x-values where f is not continuous and determine whether the discontinuities are removable or nonremovable.

For this function, there are no nonremovable discontinuities. The only type of discontinuity that could occur is a removable discontinuity. This occurs when a point is undefined, but the limit exists and is finite. In other words, the function can be made continuous by redefining it at that point.

To find any possible removable discontinuities, we need to find the values of x for which the denominator becomes zero, because division by zero is undefined. The denominator is always 29, which is never zero, so there are no values of x for which the denominator is zero. Therefore, there are no removable discontinuities.

In conclusion, the function f(x) = (4-x)/29 is continuous for all values of x, and there are no removable or nonremovable discontinuities.

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The sum and difference between the place value and face value of nine in the number 49560327 and 1024968 are  9, 000, 900 and 8 , 999, 100 respectively

Place value can be defined as the numerical value that every digit in a  given number has based on its position.

It is the value of the position of digits.

Example:

The place value of 2 in 2526 is at the thousandth and tenth place.

From the information given, we have that;

49560327 and 1024968

In this number 49560327 , the place value of 9 is;

9,000,000

In this number 1024968, the place value of 9 is;

900

Add the values = 9, 000, 900

Subtract the values = 8, 999, 100

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If 6 times the 6th term of an A.P is equal to 9 times the 9th term, then 15th term of the A.P. is -2d with d as the common difference.

Let's call the common difference of the arithmetic progression (A.P.) "d". The nth term of an A.P. is given by the formula T = a + (n - 1)d, where a is the first term and n is the term number.

Using this formula, we can write two expressions for the 6th and 9th terms:

T₆ = a + (6 - 1)d = a + 5d

T₉ = a + (9 - 1)d = a + 8d

According to the problem, 6 times the 6th term of the A.P. is equal to 9 times the 9th term, so we can write the following equation:

6T₆ = 9T₉

Substituting the expressions for T₆ and T₉, we get:

6(a + 5d) = 9(a + 8d)

Expanding and solving for a, we get:

6a + 30d = 9a + 72d

Subtracting 6a from both sides:

24d = 3a + 72d

Subtracting 72d from both sides:

-48d = 3a

Dividing both sides by 3:

-16d = a

So, the first term of the A.P. is -16d.

To find the 15th term, we can use the formula for the nth term:

T₁₅ = a + (15 - 1)d = -16d + 14d = -2d

So, the 15th term of the A.P. is -2d.

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Answer:

True

It is also known as Theodorus' constant named after Theodorus of Cyrene, who proved its irrationality!

Answer:

its true because the answer is a decimal and it repeats.

Step-by-step explanation:

Statement (B) The mean lies to the left of the median for a positively skewed distribution because there will be fewer data on the right side is correct.

It is defined as the depiction of numerical data in a graph using a bar with no space. The histogram depicts the approximate distribution of the data.

We know on the left side skewed histogram has more data on the right and on the left side, there are fewer data. It is also called a negatively skewed histogram.

On the right side skewed histogram, there is fewer data on the right side and more data on the left side. It is also called a positive histogram.

Thus, statement (B) The mean lies to the left of the median for a positively skewed distribution because there will be fewer data on the right side is correct.

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Answer:

the answer is d

Step-by-step explanation:

The minimum area of a poster that will contain 50 square inches of printed material and have 4-inch margins on the top and bottom and 2-inch margins on the left and right is 98 square inches.

To determine the minimum area of the poster, we need to consider the dimensions of the printed material and the margins. The printed material covers an area of 50 square inches. The margins on the top and bottom are each 4 inches, which means we need to add 8 inches to the height of the printed material. The margins on the left and right are each 2 inches, which means we need to add 4 inches to the width of the printed material.
To determine the minimum area of the poster, follow these steps:

1. Add the top and bottom margins to the height of the printed material:
  Height = Printed Height + Top Margin + Bottom Margin
  Height = 50 square inches (assuming printed material height is 1 inch) + 4 inches + 4 inches
  Height = 9 inches

2. Add the left and right margins to the width of the printed material:
  Width = Printed Width + Left Margin + Right Margin
  Width = 50 square inches / 1 inch (since printed material height is 1 inch) + 2 inches + 2 inches
  Width = 54 inches

So, the total height of the poster is the height of the printed material plus the top and bottom margins, which is 50/width + 8 inches. The total width of the poster is the width of the printed material plus the left and right margins, which is 50/height + 4 inches.
Therefore, the minimum area of the poster is 7 x 14 = 98 square inches.

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Answer:

x = 100

Step-by-step explanation:

You have to use the equation 15x + 10 = 6x - 6 + 70. This equation finds out that x = 6. Then, you would multiply 6 by 15. This gets 90. Finally, add 10 to that.

Answer:

On the y- axis everything is postive so it would be (11,27)

If every individual in a population has an equal chance of being selected for a sample, the sample is said to be a "random sample" or a "simple random sample."

A random sample is a sampling technique used in statistics to gather data from a population. It is considered one of the most unbiased and reliable methods for selecting a sample. In a random sample, each individual in the population has an equal probability of being selected, regardless of their characteristics or attributes.

This equal chance of selection eliminates any systematic bias and ensures that the sample is representative of the population.

The process of obtaining a random sample involves assigning a unique identifier to each individual in the population and using a randomization method to select the desired number of individuals.

Random sampling can be conducted through various techniques, such as simple random sampling, where individuals are selected directly from the population using a random number generator or a randomization table.

The goal of a random sample is to reduce the potential for selection bias and increase the generalizability of the findings to the larger population. By giving every individual an equal opportunity to be included in the sample, researchers can make more accurate inferences and draw conclusions about the population as a whole.

This type of sampling method ensures that each member of the population has an equal opportunity to be included in the sample, making it a representative subset of the population.

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The most the salon would be willing to pay that groomer is $25×4 = $100.

The unitary method is a technique that determines the worth of a single unit from value of multiple units, as well as the quality of multiple units from value of a single unit.

Some key features regarding the unitary method are-

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☽------------❀-------------☾

Hi there!

~

Answer:

\(16 + 28 + -42\)

\(= 44 - 42\)

\(= 2\)

❀Hope this helped you!❀

☽------------❀-------------☾

Answer:

2

Step-by-step explanation:

This is the answer because:

1) First, we have to add 16 and 28 which is 44

16 + 28 = 44

2) Next, we have to add 44 and -42, which will be 2 because whenever we have to add or subtract integers, we are supposed to multiply the signs, and then we have to put the sign of the greater number. In this case, it would be:

44 + (-42) = 44 - 42 = 2

Hope this helps! :D

By using a net and calculating the areas of each face, we determined that the surface area of the prism with dimensions 7m, 10cm, and 5cm is 105.5 square meters.

To find the surface area of a prism, we need to calculate the areas of all its faces and then sum them up.

The given prism has dimensions of 7 meters, 10 centimeters, and 5 centimeters. To find the surface area, let's break down the prism into its individual faces using a net.

A net is a 2D representation of a 3D shape that, when folded, forms the desired solid. For this prism, the net consists of two rectangular faces with dimensions 7m x 10cm, two rectangular faces with dimensions 7m x 5cm, and two square faces with dimensions 10cm x 5cm.

Calculating the areas of these faces:

The two rectangular faces with dimensions 7m x 10cm have areas of 7m x 10cm = 70m².

The two rectangular faces with dimensions 7m x 5cm have areas of 7m x 5cm = 35m².

The two square faces with dimensions 10cm x 5cm have areas of 10cm x 5cm = 50cm².

Now, let's convert the area of the square faces from square centimeters to square meters:

50cm² is equivalent to 0.5m² (since 1m = 100cm).

Summing up the areas of all the faces:

70m² + 35m² + 0.5m² = 105.5m².

Therefore, the surface area of the given prism is 105.5 square meters.

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