Which is the graph of y= 2x-3?

The given statement, "In a contingency table, when all the expected frequencies equal the observed frequencies the calculated statistic equals zero" is true because when all the expected frequencies equal the observed frequencies, the calculated statistic equals zero.

A contingency table is a table used in statistics that shows the distribution of one variable in rows and another variable in columns. It is also known as a cross-tabulation table or a two-way frequency table. In a contingency table, expected frequencies are calculated based on the assumption that there is no association between the variables being analyzed.

Observed frequencies, on the other hand, are the actual frequencies of the data being analyzed. When all the expected frequencies in a contingency table are equal to the observed frequencies, it means that there is no association between the variables, and the calculated statistic equals zero. This is because the difference between the observed and expected frequencies is used to calculate the statistic, and if there is no difference, the statistic will be zero.

Therefore, the statement "In a contingency table, when all the expected frequencies equal the observed frequencies the calculated statistic equals zero" is true.

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Answer:

He can save 20 dollars

Step-by-step explanation:

He can buy one 100 token amount and one 25 token amount. This will cost 20 + 10 dollars, or 30 dollars. If each friend buys 25 tokens, it will cost

10 * 5 dollars, or 50 dollars. 50 - 30 = 20. So he can save 20 dollars.

9514 1404 393

Answer:

  a = 1

Step-by-step explanation:

The altitude is perpendicular to line QR, so point Q lies on a line through R that is perpendicular to the given altitude line. The given altitude line has a slope of -1. This means line QR will have a slope of 1, so the line QR in point-slope form is ...

  y -k = m(x -h) . . . . . line with slope m through point (h, k)

  y -4 = 1(x -3)

Since point Q(a, 2a) is on this line, its coordinates will satisfy this equation.

  2a -4 = a -3

  a = 1 . . . . . . . . add 4-a to both sides

_____

The line with slope 2 on the attached diagram is the locus of all possible points Q. The one of interest is the one that is on the perpendicular through R.

__

Additional comment

In order for a line to be an altitude to side QR, it must go through point P. The given line (y=-x+6) does not go through point P. We assume that the line y=-x+5 is the one that is intended.

Answer:

(-\(\sqrt{3} \\\), 1)

Answer:

Force, F = 51300 N

Step-by-step explanation:

We have,

Mass of a car is 1350 kg

Acceleration of the car is 38 m/s².

It is required to find the force required to accelerate the car. The force acting on the object is given by the formula as follows:

\(F=ma\\\\F=1350\ kg\times 38\ m/s^2\\\\F=51300\ N\)

So, the force of 51300 N is required to accelerate the car.

The solutions are,

1. True

2. False

3. True

4. False

For all the given statements the true or false are,

A, X and D are n X n matrices.

1. A is diagonalizable if A XDX⁻¹ for some diagonal matrix D and some invertible matrix X.

→ True

2. A is diagonalizable if and only if A has n eigenvalues, counting multiplicities.

→ False, It always has n eigenvalues, counting multiplicity.

3. If A is diagonalizable, then A is invertible.

→ True, In this case, we can construct a P which will be invertible. And a D.

4. If there exists a basis for R" consisting entirely of eigenvectors of A, then is diagonalizable.

→ False, It's invertible if it doesn't have zero an eigenvector but this doesn't affect diagonalizability.

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Based on the given information, we can expect the p-value for a two-sided test using this data to be smaller than 0.05. This is because the 95% confidence interval for the mean does not contain 0, which indicates that there is a statistically significant difference between the yield of silver queen and country gentlemen.

A p-value is a measure of the evidence against the null hypothesis (which in this case would be that there is no difference between the two corn varieties). The smaller the p-value, the stronger the evidence against the null hypothesis and the more likely we are to reject it. In general, if the p-value is smaller than the chosen significance level (usually 0.05 or 0.01), we reject the null hypothesis and conclude that there is a significant difference between the two groups being compared.

Therefore, in this case, we can expect the p-value to be smaller than 0.05 and conclude that there is a significant difference in the yield of silver queen and country gentlemen.

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Step-by-step explanation:

JM = 27 ---- ( given )

JM = KL

so, KL = 27

\(r = \frac{15}{7} \)

Answer:

89+57 = 146

146+(5x-6) = 180

146-146+(5x-6) = 180-146

5x-6 = 34

5x-6+6 = 34+6

5x = 40

5x/5 = 40/5

x = 8

The simplest form of fraction 102/425 is 6/25 and 24% of people had gone for movie last month.

Fractions are used to represent smaller pieces of a whole.

Given that, a survey of 425 people found that 102 of them had gone to the movies in the last month,

a) 102/425 = 6/25

b) Percentage of people gone for movie = 102/425*100 = 24%

Hence, The simplest form of fraction 102/425 is 6/25 and 24% of people had gone for movie last month.

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The value of y, the length of each leg, must be greater than 7.

This is a type of triangle with two equal sides.

Let the first, second and third side = a, b and c respectively

     (b - a) < c < (a + b)

For an isosceles triangle with base of 14 units, the two other sides must be equal.

c <  (a + b)

c = 14

a = b = y

14 < (y + y)

14 < 2y

7 < y

Thus, the value of y, the length of each leg, must be greater than 7.

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Answer: C. greater than 7.

Step-by-step explanation:  Trust Me!

Did it on Edge got the answer correct! :)  

For a binomial experiment with 11 trials and a success probability of 0.2, the probability of exactly 5 successes (p5) can be calculated using the binomial probability formula. The mean is 2.2, the variance is 1.76, and the standard deviation is approximately 1.33. These measures provide information about the central tendency and spread of the binomial distribution.

In a binomial experiment, each trial can have two outcomes: success or failure. The probability of success is denoted by p, and the probability of failure is equal to 1 - p. The binomial probability formula is used to calculate the probability of a specific number of successes in a given number of trials.

In this case, the number of trials is 11, and the success probability is 0.2. To find the probability of exactly 5 successes (p5), we use the binomial probability formula: \(p5 = (11 choose 5) * (0.2)^5 * (0.8)^{(11-5)\). The "11 choose 5" term represents the number of ways to choose 5 successes out of 11 trials.

The mean of a binomial distribution is given by the product of the number of trials (n) and the success probability (p). Thus, the mean for this experiment is 11 * 0.2 = 2.2. This means that, on average, we expect to see 2.2 successes per 11 trials.

The variance of a binomial distribution is calculated using the formula: variance = n * p * (1 - p). For this experiment, the variance is 11 * 0.2 * (1 - 0.2) = 1.76. The variance measures the spread or dispersion of the distribution.

The standard deviation is the square root of the variance. In this case, the standard deviation is sqrt(1.76) ≈ 1.33. The standard deviation provides a measure of how much the observed values deviate from the mean.

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The slope criteria for parallel and perpendicular lines is a useful tool for solving geometric problems because it helps you determine whether two lines are parallel, perpendicular or neither based on their slopes.

For parallel lines, the slope must be equal. If the slopes of two lines are equal, then the lines are parallel.

For perpendicular lines, the product of their slopes must be equal to -1.

If the product of the slopes of two lines is -1, then the lines are perpendicular.

To apply the slope criteria in a problem, you need to find the equation of the two lines, either in slope-intercept form (y = mx + b) or point-slope form (y - y1 = m(x - x1)). Once you have the equation, you can find the slope of each line by either finding the coefficient of x in the slope-intercept form or finding the value of m in the point-slope form. Then you can compare the slopes to determine whether the lines are parallel, perpendicular, or neither.

For example, consider two lines with equations y = 2x + 1 and y = -(1/2)x + 3. To determine whether they are parallel or perpendicular, you first find the slope of each line: 2 for the first line and -1/2 for the second line. Since their slopes are not equal, the lines are not parallel. But since the product of their slopes is equal to -1, the lines are perpendicular.

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This type of sample is called a Stratified sample if the US defense selected 10% of all Iraqi war veterans for a special survey that would closely resemble the composition of all the soldiers.

Stratified sampling concerns dividing the population size into multiple smaller subgroups or strata types of groups based on certain required characteristics and then selecting the information that is to be extracted from the data.

In the given case, the Selection of Iraqi war people from the survey indicates the composition of the sample size which is determined from a proportion of the population. This is another characteristic of stratified sampling.

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To establish whether findings from a sample may be extrapolated to the entire population, we use inferential statistics.

A population is the total group about which you want to reach conclusions. A sample is the specific group from which you will collect data. Always, the sample size is less than the whole population. The term "population" in research rarely refers to people. Using an office as an example, all of the employees would represent the Population, and all of the managers would represent the Sample. To create a comparison, picture your population as an ocean, and your sample as an aquarium.

Inferential statistics is a branch of statistics that uses data to draw inferences and generalizations about a certain situation or fact.

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Answer:

Step-by-step explanation:

To evaluate the given expression, we need to substitute the given values for x, y, and z. The expression becomes:

yz + x²

Substituting the given values, we get:

(6.1 * 0.2) + (3.2^2)

This simplifies to:

1.22 + 10.24

Therefore, the value of the expression is approximately 11.46.

11.46

gimme brainlyest gang

Answer:

choice 1) $21.90

Step-by-step explanation:

30% of $72.99 = 0.3(72.99) = $21.90

Answer:

21.90

Step-by-step explanation:

The volume of the given cylinder would be = 4300 in³

The formula that can be used to calculate the volume of a cylinder = V= πr²h

where,

π = 3.14

r = 14

h = 7

volume = 3.14× 14² × 7

= 3.14× 196× 7

= 4308.08

= 4300 in³

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Answer:

7 cups of flower.

Step-by-step explanation:

He made 7 loaves and each loaf calls for 1 cup of flour. 7 times 1=7...I feel like this is so easy.

The keys in the binary search tree will be visited in the following order in an inorder traversal: 12, 23, 25, 30, 37, 40, 45, 50, 60, 75, 80, 88.

In an inorder traversal of a binary search tree, the keys are visited in ascending order. Starting from the left subtree, the left child is visited first, followed by the root, and then the right child. This process is then repeated for the right subtree. So, the keys are visited in ascending order from the smallest to the largest value in the tree. In the given binary search tree, the sequence of keys visited in an inorder traversal is 12, 23, 25, 30, 37, 40, 45, 50, 60, 75, 80, 88.

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Answer:

Circumference is 43.982 cm

Step-by-step explanation:

\(circumference = 2\pi r \\ = (2 \times 3.14 \times 7) \\ = 43.982 \: cm\)

\({ \underline{ \tt{ ‡†‡ \: \: trent008}}}\)

To find a solution to the ordinary differential equation (ODE) \(y' = -y\) with the initial condition \(y(0) = 1\), we can use the method of successive approximations.

This method involves iteratively improving the approximation of the solution by using the previous approximation as a starting point for the next iteration. In this case, we start by assuming an initial approximation for the solution, let's say \(y_0(x) = 1\). Then, we can use this initial approximation to find a better approximation by considering the differential equation \(y' = -y\) as \(y' = -y_0\) and solving it for \(y_1(x)\).

We repeat this process, using the previous approximation to find the next one, until we reach a desired level of accuracy. In each iteration, we find that \(y_n(x) = 1 - x + \frac{x^2}{2!} - \frac{x^3}{3!} + \ldots + (-1)^n \frac{x^n}{n!}\). As we continue this process, the terms with higher powers of \(x\) become smaller and approach zero. Therefore, the solution to the ODE is given by the limit as \(n\) approaches infinity of \(y_n(x)\), which is the infinite series \(y(x) = \sum_{n=0}^{\infty} (-1)^n \frac{x^n}{n!}\).

This infinite series is a well-known function called the exponential function, and we can recognize it as \(y(x) = e^{-x}\). Thus, using the method of successive approximations, we find that the solution to the given ODE with the initial condition \(y(0) = 1\) is \(y(x) = e^{-x}\).

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The explicit formula for the sequence is aₙ=(-4).(-4)ⁿ⁻¹ and the 8th term is 65536

The given sequence is -4, 16, -64, 256,...

If we observe the sequence it is a geometric sequence

aₙ=a.rⁿ⁻¹

a is the first term and r is the common ratio

From the sequence the first term is -4 and common ratio is -4

aₙ=(-4).(-4)ⁿ⁻¹

Plug in the value n as 8

a₈=(-4).(-4)⁷

The value of minus four power seven is minus sixteen thousand three hundred eighty four

a₈=(-4)(-16384)

When four is multiplied with sixteen thousand three hundred eighty four we get sixty five thousand five hundred thirty six

a₈= 65536

Hence, the explicit formula for the sequence is aₙ=(-4).(-4)ⁿ⁻¹ and the 8th term is 65536

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Answer:

i had the exact same question as this, dm me on discord so i can screenshare my answer

Step-by-step explanation:

jey0001 is my discord

Answer:

60°

Step-by-step explanation:

as they are a linear pair

120°+x=180

x=180-120

x=60°

Answer:

y = 2/3x+3

Step-by-step explanation:

-2x+3y=6

you add 2x to the other side 3y=2x+6

and divide by 3

y = 2/3x+2

The theorem is shown in a pythagoras theorem is c² = a² + b²

The theorem shown in the Pythagorean theorem is "a² + b² = c²". This theorem is named after the ancient Greek mathematician Pythagoras, who is credited with discovering it.

The Pythagorean theorem applies to right-angled triangles and states that the square of the length of the hypotenuse (the side opposite the right angle) is equal to the sum of the squares of the other two sides.

Mathematically, we can express this as:

c² = a² + b²

Where c is the length of the hypotenuse, and a and b are the lengths of the other two sides (called the legs) of the right-angled triangle.

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This question is vague and has no true answer. You could consider a caveman counting rocks, Pythagoras applying his theorem, or Newton impacting physics.