Solve for d.
d
-2=d/-1

No, it doesn't show that single individuals under the age of 25 have more insurance claims than the nationwide percent reported by the big insurance firm.

Hypothesis

Null hypothesis : H0: p = 0.68

Alternative hypothesis : Ha: p > 0.68

A random sample of 53 claims showed that 41 were made by single people under the age of 25.

Thus; p^ = 41/53 = 0.7736

The test statistic is

z = (p^ - p_o)/√(p_o(1 - p_o)/n)

z = (0.7736 - 0.68)/√(0.68(1 - 0.68)/41)

z = 0.0936/0.07285

z = 1.28

The p-value from z-score calculator, using z = 1.28, one tail hypothesis and significance level of 0.05,we have;

P(z > 1.28) = 0.100273

The p-value gotten is greater than the significance value and so we fail to reject the null hypothesis and conclude that there is insufficient evidence to support the claim.

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a) The null hypothesis, H0: p1 - p2 = 0, states that there is no real change in opinion among U.S. adults from May to June. The alternative hypothesis, Ha: p1 - p2 ≠ 0, states that there is a real change in opinion among U.S. adults from May to June.

(b) Under the null hypothesis, the difference in the percentages is expected to be 0%. The estimated standard error for this difference can be calculated as sqrt((p1(1-p1)/n1)+(p2(1-p2)/n2)), where p1 and p2 are the sample proportions for May and June, respectively, and n1 and n2 are the sample sizes for May and June, respectively.

(c) The two-sample z test statistic can be calculated as (p1-p2)/SE, where p1 and p2 are the sample proportions for May and June, respectively, and SE is the estimated standard error for the difference in proportions.

(d) The p-value can be calculated as the area under the normal distribution curve to the left of the negative of the absolute value of the z test statistic plus the area under the normal distribution curve to the right of the absolute value of the z test statistic.

(e) Our conclusion depends on the significance level chosen and the p-value obtained. If the significance level is chosen to be 0.05 and the p-value obtained is less than 0.05, then we reject the null hypothesis and conclude that there is evidence for a real change in opinion among U.S. adults from May to June.

If the p-value obtained is greater than or equal to 0.05, then we do not reject the null hypothesis and conclude that there is not enough evidence to support a real change in opinion among U.S. adults from May to June.

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Answer:

C

because it looks right

Answer:

1/36

Step-by-step explanation:

On the first cube, there is a 1/6 probability to roll a 1. On the second cube, theres is a 1/6 probability to roll a 6

Multiply the two fractions and it would equal 1/36

There would be a 1/36 probability.

If my answer is incorrect, pls correct me!

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-Chetan K

Kayla has read more pages than Bilquis after 4 days, so she is farther along in the book.

The equation to represent the situation of Bilquis would be B = 23 + 7t

The equation to represent the situation of Kayla would be K = 2 + 14t

For Bilquis, the equation to represent the situation would be B = 23 + 7t, where B is the page of the book that Bilquis is on at the end of t days into the month.

For Kayla, the equation to represent the situation would be K = 2 + 14t, where K is the page of the book that Kayla is on at the end of t days into the month.

The equations help us to calculate the page number of each reader at any given point in time. Bilquis starts at page 23 and reads 7 pages a day, so we add 7t to her starting point. Kayla starts at page 2 and reads 14 pages a day, so we add 14t to her starting point. By comparing their page numbers after a certain number of days, we can determine which reader is farther along in the book.

After 4 days,

Bilquis would be on page = 23 + 7(4) = 51

Kayla would be on page = 2 + 14(4) = 58.

Therefore, Kayla would be farther along in the book after 4 days with a gap of 7 pages with Bilquis.  

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Step-by-step explanation:

\(volume \: of \: cylinder = \pi \: {r}^{2} h \\ volume = 3.14 \times {7}^{2} \times 19 \\ = 2923.34 \: millimetres\)

The value of the given and completed expression in this problem is

-1

Combined operations are defined as a set of operations applied to the same problem, for example addition, subtraction, multiplication, are frequently used in arithmetic polynomials.

In this case we have an arithmetic polynomial.

We complete the expression as follows:

1 + 2 - 3 + 4 - 5

We group the positive terms on one side and negative terms on the other:

The value of the expression (1 + 2 - 3 + 4 - 5) is -1

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The values of θ (between 0 and 2π) where tan(θ) = 1 are π/4 and 5π/4, and the values of θ (between 0 and 2π) where tan(θ) = -1 are 3π/4 and 7π/4.

To determine the values of θ (between 0 and 2π) where tan(θ) = 1, we can use the unit circle and the properties of the tangent function.

In the unit circle, the tangent of an angle θ is defined as the ratio of the y-coordinate to the x-coordinate of the point on the unit circle corresponding to that angle.

The tangent function is positive in the first and third quadrants and negative in the second and fourth quadrants.

For tan(θ) = 1, we are looking for angles where the y-coordinate and the x-coordinate are equal. In the first quadrant, there is an angle θ = π/4 (45 degrees) where tan(θ) = 1.

In the third quadrant, the angle θ = 5π/4 (225 degrees) also satisfies tan(θ) = 1.

To determine the values of θ (between 0 and 2π) where tan(θ) = -1, we follow a similar process. In the second quadrant, there is an angle θ = 3π/4 (135 degrees) where tan(θ) = -1.

In the fourth quadrant, the angle θ = 7π/4 (315 degrees) also satisfies tan(θ) = -1.

Therefore, the values of θ (between 0 and 2π) where tan(θ) = 1 are π/4 and 5π/4, and the values of θ (between 0 and 2π) where tan(θ) = -1 are 3π/4 and 7π/4.

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a) False. An inner product is a scalar-valued function on the set of pairs of vectors, not necessarily ordered pairs.

b) True. An inner product space is defined over the field of real or complex numbers. The field determines the properties of scalar multiplication and scalar-valued functions in the space.

c) True. An inner product is linear in both components, meaning it satisfies the properties of linearity: additivity and homogeneity.

d) False. There are infinitely many inner products on the vector space Rn. Different inner products can be defined based on different choices of functions that satisfy the properties of an inner product.

e) False. The triangle inequality holds in any inner product space, regardless of whether it is finite-dimensional or infinite-dimensional.

f) False. Conjugate-transpose applies to both square and non-square matrices. It is a linear transformation that involves taking the transpose and then taking the complex conjugate of each entry of the matrix.

g) True. If the inner product of a vector y with every vector x in the inner product space is zero, then y must be the zero vector. This property is known as positive definiteness and is a requirement for an inner product.

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Answer:

the answer is up u can see it if u want explanation u can message me here

Consumption of resources at a 3.0 planet rate indicates that a country needs to reduce its resource consumption by 2/3 to be sustainable.

Humans will be benefited from two types of resources namely renewable and non-renewable resources. The former can be utilized for the long term but the latter needs to be handled carefully.

But, they are misused by humans which leads to a lack of resources for us. Common example of non-renewable resources includes natural gas, coal, oil, etc.

The consumption of resources at a given planet rate indicates the rate of utilization of resources. With the increased consumption of resources, pollution on the planet increases. It is accompanied by numerous health issues.

It additionally requires alternatives to the resources that we will consume completely.

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Step-by-step explanation:

angle marked on diagram = 180 - 75 = 105° (supplementary angles)

x = 105° (alternate angles are equal)

Answer:

Rate of chage is 175$. i hope u have got

Answer: 255

Step-by-step explanation:

thisis a purabula and the anse for pint one

A=0,0

B=5,5

The coordinate vector [x]B of the vector x relative to the given basis B is [-2] [2] that is option C.

To find the coordinate vector [x]B of the vector x relative to the basis B, we need to express x as a linear combination of the basis vectors b1 and b2.

Given:

b1 = [5]

[-1]

b2 = [-11]

[1]

x = [-6]

[-19]

To find the coefficients of the linear combination, we solve the system of equations:

x = c1 * b1 + c2 * b2

where c1 and c2 are the coefficients.

Substituting the given values, we have:

[-6]

[-19] = c1 * [5] + c2 * [-11]

[4]

Solving this system of equations, we find that c1 = -2 and c2 = 2.

Therefore, the coordinate vector [x]B of the vector x relative to the basis B is:

[x]B = [-2]

[2]

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Answer:

e.  0.308.

Step-by-step explanation:

I can't draw the tree diagram but the answer is

P(red first) = 7/14 = 1/2

P( then black)  = 4/13

P(red then black) = 1/2 * 4/13 = 2/13

P(black first) = 4/14 =  2/7

P( then red)  = 7/13

P(black then red) =2/7 * 7/13 = 2/13

So Probability of red and black in any order

= 2/13 + 2/13  = 4/13

= 0.308.

A condition that is impossible to satisfy has no solution.

Mathematics can be a powerful tool for solving many problems, but there are some issues that can't be solved.

In particular, any condition that is impossible to satisfy, such as the logical statement ‘this statement is false’, has no solution in mathematics. This is because the statement can’t be proven true or false, and so it can’t be solved.

An unsolvable condition is one that cannot be solved using any combination of logical and mathematical steps.

This means that no matter how much time and effort is put in, a solution to the problem cannot be discovered.

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Answer: undefined, 0, -1, -2.5

Slope formula: rise over run OR (y1 - y2)/(x1 - x2)

The slope formula asks you to take two corresponding y values and x values, find their difference, and divide.

Example: Find the slope of (a, b) and (c, d)

The slope would be (a - c)/(b-d) OR (c - a)/(d - b).

It doesn't really matter which order you subtract the y-values as long as you do the same for the x-values, and vice versa.

Number 10:

Remember that a vertical line is an undefined slope!

Vertical lines increase in the y-axis, but not in the x-axis. To calculate slope you need to find the rise (y increase/decrease) over run (x increase/decrease).

So basically, the y increases forever (infinity), and is divided by 0 because the x value never increases- and you cannot divide anything by zero! You can look into why- there is a really good TedEd video I can link for you if you need it.

Therefore, the slope is undefined.

Number 11:

Straight horizontal lines always have a slope of 0- don't confuse them with vertical lines!

The rise is 0 and the run, or how much the y value increases, is infinity, because it goes on forever. 0 divided by any value other than zero is equal to zero, so the slope would be zero.

Number 12:

Right away, you can tell that this is a negative slope because it is going down on the right side of the graph! So if you don't get a negative value as your slope, you know to check your calculations.

The coordinates that are indicated by circles on the graph are (3, 4) and (4, 3).

The slope formula: (y1 - y2)/(x1 - x2)

I'll use the first point to be (x1, y1) and the second to be the values of (x2, y2)

(4 - 3)/(3 - 4) = (1)/(-1)

One divided by negative one is equal to negative 1! If you need a refresher on how to subtract or divide with negative numbers, there are a lot of great resources for that too.

So, the slope is negative 1.

Number 13:

Once again, this is a negative slope. The y values are decreasing as the x values are increasing.

The coordinates that are highlighted on the graph are (0, 4) and (3, -3).

The slope formula: (y1 - y2)/(x1 - x2)

This time, let's switch it up- I'll use the first point to be (x2, y2) and the second to be the values of (x1, y1):

(-3 - 4)/(3 - 0) = (-7)/(3)

Negative seven divided by positive three is negative 2.5.

So, the slope is negative 2.5.

I know that learning this topic can be really overwhelming, I struggled a lot with it at first- so I'm really proud you took the time to reach out and ask for explanations! I hope this helped you! Let me know if you have any questions.

Answer:

  c = -1/2

Step-by-step explanation:

Put the known values in the equation and solve for the unknown.

  k = cd² +e

  3 = c(2²) +5

  -2 = 4c . . . . . . . subtract 5

  -1/2 = c . . . . . . divide by 4

Answer:

x=4, y=5

Step-by-step explanation:

\(x=2y-6\\ x-2y=-6\\\\y=3x-7\\y-3x=-7\\\\\\\\-3x+y=-7\\-3(2y-6)+y=-7\\-6y+18+y=-7\\-5y+18=-7\\-5y=-25\\y=5\\\\\\x=2y-6\\x=2(5)-6\\x=4\)

Answer:

Value of x is 2.

Step-by-step explanation:

Given, two consecutive odd integers are x−y and 2x−y.

We know difference between two consecutive odd integers is 2, so the equation will be,

2x−y−(x−y)=2

⇒2x−y−x+y=2

⇒x=2

-Frxzite-

Hope this help :)

Answer: x = 2

Step-by-step explanation:

(x-y)+2=2x-y

(x-y)+2–2x+y=0

-x+2=0 equals to x-2=0

x=2

Answer:

0 20

Step-by-step explanation:

x2 + y2 = r2 , and this is the equation of a circle of radius r whose centre is the origin O(0, 0). The equation of a circle of radius r and centre the origin is x2 + y2 = r2 .

The Standard Form of Building Contract (SBC) and New Engineering Contract (NEC) differ in their approach to project controls and parties' interests. The SBC places more emphasis on the employer's control and protection of their interests, while the NEC focuses on collaborative project management and risk-sharing between the parties.

Standard Form of Building Contract (SBC):

1. Employer's Control: The SBC typically gives the employer more control over the project by providing detailed specifications, drawings, and instructions. The employer has the authority to make changes and variations to the works and can require the contractor to comply strictly with the contract terms.

2. Variations and Change Orders: The SBC often involves a traditional approach to variations and change orders, where the employer instructs changes, and the contractor is entitled to claim additional time and cost. The employer has the power to assess and approve the valuation of variations.

3. Risk Allocation: The SBC generally allocates more risk to the contractor. The contractor is responsible for design, workmanship, materials, and site conditions unless specifically stated otherwise in the contract. The employer retains more control and protection against risks.

New Engineering Contract (NEC):

1. Collaborative Project Management: The NEC promotes collaborative project management and shared responsibility. It encourages open communication and cooperation between the parties, focusing on achieving project objectives rather than placing sole control in the hands of the employer.

2. Compensation Events: The NEC introduces the concept of compensation events, which are events that can impact time, cost, or both. Both the employer and contractor have the authority to notify and assess compensation events, leading to adjustments in time and cost as agreed upon in the contract.

3. Risk-Sharing: The NEC emphasizes risk-sharing between the parties. It allows for the allocation of risks to the party best able to manage them. The contract promotes a proactive approach to risk management and encourages early identification and mitigation of risks.

The Standard Form of Building Contract (SBC) and New Engineering Contract (NEC) differ in their approach to project controls and parties' interests. The SBC provides the employer with more control and protection, while the NEC focuses on collaborative project management and risk-sharing between the parties. Understanding these differences is crucial for effectively managing contractual obligations and ensuring successful project outcomes.

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Sketch the surface by analyzing its cross sections at different values of x, y, and z.

To sketch the surface defined by the equation x = 3y² - 3z², we can analyze its cross sections at various values of z, y, and x.

For the cross section at z = -1, the equation becomes x = 3y² - 3. This represents a parabola opening upward.

For the cross section at z = 0, the equation is x = 3y² - 3, which also represents a parabola opening upward.

Similarly, for the cross section at z = 1, we have x = 3y² - 3, indicating a parabola opening upward.

For the cross sections at y = -1, y = 0, and y = 1, the equations become x = 3 - 3z², x = -3z², and x = 3 - 3z², respectively. These equations represent horizontal lines at different heights.

For the cross sections at x = -1, x = 0, and x = 1, the equations become -1 = 3y² - 3z², 0 = 3y² - 3z², and 1 = 3y² - 3z², respectively. These equations represent vertical planes intersecting the surface.

By considering these cross sections, we can sketch the surface of the given equation, revealing its overall shape and characteristics.

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Answer:

your number is 4

Step-by-step explanation:

4x+7=(x:2)+21

4x +7=0.5x + 21

3.5x +7=21

21-7=14

14:3.5=4

The first quartile is always equal to one of the values in the sample when the sample size is a multiple of 4.

This is because the first quartile is the median of the lower half of the data set, and when the sample size is a multiple of 4, there is anThe first quartile is always equal to one of the  valuesin the sample when the sample size is a multiple of 4. This is because the first quartile is the median of the lower half of the data set, and when the sample size is a multiple of 4, there is an even number of values in the lower half of the data set. Therefore, the first quartile will be one of the values in the sample. For example, if the sample size is 8, the first quartile will be the median of the first 4 values, which will be one of the values in the sample.

In summary, the first quartile is always equal to one of the values in the sample when the sample size is a multiple of 4. of values in the lower half of the data set. Therefore, the first quartile will be one of the values in the sample. For example, if the sample size is 8, the first quartile will be the median of the first 4 values, which will be one of the values in the sample.
In summary, the first quartile is always equal to one of the values in the sample when the sample size is a multiple of 4.

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Answer:

Step-by-step explanation:

The required surface area of the sphere with radius 10 feet is given by option a. 1,256 ft².

Let us consider 'r' be the radius of the sphere.

Radius of the sphere 'r' = 10 feet

Surface area of the sphere = 4 π r²

Substitute the value of radius in the formula we get,

⇒ Surface area of the sphere = 4 π × ( 10 )²

Substitute value of π is equal to 3.14 we get

⇒ Surface area of the sphere = 4 × 3.14 × ( 10 )²

⇒ Surface area of the sphere =  12.56 × 100

⇒ Surface area of the sphere = 1,256 square feet.

Therefore, the surface area of the sphere is equal to option a. 1,256 ft².

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