help ASAP i need help

Answer: It can be either one.

x=−3

or

x=−5

There are approximately 2425 of those intervals that will contain the population means.

A confidence interval is a range of values that includes a parameter estimate with a certain degree of certainty. A confidence interval is a measure of uncertainty about an estimation procedure, rather than a statement about a parameter. A confidence interval is a specific value or a range of values in statistics that is used to estimate population characteristics.

This is because a 97% confidence interval means that if we were to repeat the sampling process many times, about 97% of the resulting intervals would contain the population mean. In other words, we would expect 97% of the intervals to be "correct" in the long run, while about 3% of them would not contain the population mean.

Therefore, out of the 2500 intervals we compute, we would expect approximately 0.97 x 2500 = 2425 intervals to contain the population mean, and about 0.03 x 2500 = 75 intervals not to contain the population mean. However, it's important to note that the actual number of intervals that contain the population means may vary from this expected value due to random sampling variability.

Where, \(\[\bar{x}\]\) is the sample mean

\(\[\frac{s}{\sqrt{n}}\]\) is the standard error of the mean

zα/2 is the z-score that covers α/2 in the tails of a normal distribution.

As we draw 2500 samples of size 100 from a population and compute a 97% confidence interval for each sample, the proportion of the sample will contain the population means.

Therefore, the number of intervals that will contain the population mean is approximately 2425.

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Answer:

-1

Step-by-step explanation:

The rise and Run are -4/4. As you should know in fractions if the denominator and numerator are the some, it equals 1.

Answer:

The answer is a) 1

Step-by-step explanation:

The equation to find the slope is \(\frac{y_{1} -y_{2}}{x_{1}-x_{2}}\) if you plug in 2 points it becomes\(\frac{2-1}{1-0}\). If you solve that equation, you now get \(\frac{1}{1} = 1\)

hope this helps :)

Answer:

\(m = \frac{ - 5 - 1}{2 - ( - 3)} = - \frac{6}{5} \)

Answer: The answer is either C or D. Take 5000 times 2.75% and see what answer you come up with? Does it match any of ur answer listed...

Step-by-step explanation:

Answer: D-$5896.97

Step-by-step explanation: mcgraw hill answer

Part A:

If a quadratic has only one x-intercept, then that is where the vertex lies. being that the vertex is the highest or lowest point in the quadratic. To sketch, it will open downwards with a single x-cept

Part B:

The graph will be above the x-axis. And having the vertex being at (0,1) as it says its the minimum value. All the minimum means is that its the lowest value of this given parabola.

Part C:

Plot the points of the y-intercept and z-intercepts. Then plot the maximum value is. Connect the dots.

9514 1404 393

Explanation:

Make use of the properties of equality.

  a = 2b +6 . . . . . given

  a = 9b -8 . . . . . given

  2b +6 = 9b -8 . . . . . . . substitution property of equality

  6 = 7b -8 . . . . . . . . . . . subtraction property of equality

  14 = 7b . . . . . . . . . . . . . addition property of equality

  2 = b . . . . . . . . . . . . . . . division property of equality

  b = 2 . . . . . . . . . . . . . . symmetric property of equality

The probability that a randomly selected cyclist will take between 2.35 and 2.45 hours to complete the race is approximately 0.0781 or 7.81%.

To find the probability that a randomly selected cyclist will take between 2.35 and 2.45 hours to complete the race, we can use the normal distribution.

First, we need to standardize the values using the z-score formula:

z = (x - μ) / σ

For x = 2.35:

z1 = (2.35 - 2.5) / 0.5 = -0.3

For x = 2.45:

z2 = (2.45 - 2.5) / 0.5 = -0.1

Next, we need to find the area under the standard normal curve between z1 and z2, which represents the probability of the time falling between 2.35 and 2.45 hours.

Using a standard normal distribution table or a calculator, we can find the corresponding probabilities:

P(z1 < z < z2) = P(-0.3 < z < -0.1)

Looking up the values in the standard normal distribution table, we find:

P(z < -0.1) = 0.4602

P(z < -0.3) = 0.3821

To find the probability between the two z-values, we subtract the smaller probability from the larger probability:

P(-0.3 < z < -0.1) = 0.4602 - 0.3821 = 0.0781

Therefore, the probability that a randomly selected cyclist will take between 2.35 and 2.45 hours to complete the race is approximately 0.0781 or 7.81%.

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Answer:

1845

Step-by-step explanation:

if one of the prefects must be a girl, the only allowed combinations are GBB, GGB, and GGG

GBB
(15c2 * 10c1) / 25c3 = 21/46
GGB
(15c1 * 10c2) / 25c3 = 27/92
GGG
(15c0 * 10c3) / 25c3 = 6 / 115

21/46 + 27/92 + 6 / 115 = 369 / 460 or 0.802...
25c3 = 2300 * 0.802... = 1845

Factoring polynomials with a leading coefficient greater than 1 is to use the factoring by grouping technique or quadratic formula.

Factoring a polynomial with a leading coefficient greater than 1 can be more challenging than factoring a polynomial with a leading coefficient of 1. However, there are several methods and techniques that can be used to factor such polynomials.

One common method for factoring polynomials with a leading coefficient greater than 1 is to use the factoring by grouping technique. This involves grouping the terms of the polynomial in pairs and factoring out the greatest common factor of each pair.

The resulting expressions can then be further factored or combined to obtain the final factorization of the polynomial.

Another method for factoring polynomials with a leading coefficient greater than 1 is to use the quadratic formula, which can be used to find the roots of a quadratic polynomial. Once the roots are found, the polynomial can be factored as a product of linear factors.

In some cases, it may also be helpful to use a combination of these techniques, along with other algebraic manipulations, such as completing the square or long division.

Overall, factoring a polynomial with a leading coefficient greater than 1 may require more patience and creativity than factoring a polynomial with a leading coefficient of 1, but with practice and persistence, it is possible to develop the skills and techniques needed to factor such polynomials efficiently and accurately.

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The set of ordered pairs which correctly represents a function as required to be determined in the task content is; {(10,5), (-10,-5), (5,10), (-5,-10)}.

It follows from definition that; a function is a special kind of relation in which case no input, x value is assigned more than 1 output value.

On this note, the set of ordered pairs where each x-value is assigned one output, y value is the set that represents a function.

Ultimately, the set among the answer choices which represents a function is; {(10,5), (-10,-5), (5,10), (-5,-10)}.

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The recommended rule to sequence the jobs for minimum flow time is the EDD (Earliest Due Date) rule.

The EDD rule prioritizes jobs based on their due dates, where jobs with earlier due dates are given higher priority. By sequencing the jobs in order of their due dates, the goal is to minimize the total flow time, which is the sum of the time it takes to complete each job.

In this case, applying the EDD rule, the sequence of jobs would be as follows:

D (Due on Friday 10th June)

F (Due on Tuesday 14th June)

E (Due on Wednesday 15th June)

C (Due on Friday 17th June)

G (Due on Thursday 16th June)

H (Due on Saturday 18th June)

A (Due on Monday 13th June)

B (Due on Monday 20th June)

By following the EDD rule, we aim to complete the jobs with earlier due dates first, minimizing the flow time and ensuring timely delivery of the orders.

Therefore, the recommended rule for sequencing the jobs in this scenario is the EDD (Earliest Due Date) rule.

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Writing linear equations given two points can be a useful skill when graphing linear equations.

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The correct formula for finding the present value of an investment is given by option D) PV = FV x 1/(1 + r)^n.

The present value (PV) of an investment is the current value of future cash flows discounted at a specified rate. The formula for calculating the present value takes into account the future value (FV) of the investment, the interest rate (r), and the number of periods (n).

Option D) PV = FV x 1/(1 + r)^n represents the correct formula for finding the present value. It incorporates the concept of discounting future cash flows by dividing the future value by (1 + r)^n. This adjustment accounts for the time value of money, where the value of money decreases over time.

In contrast, options A), B), and C) do not accurately represent the present value formula and may lead to incorrect calculations.

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Answer: 1

Step-by-step explanation:

When you compare the two lists of factors, you can see that the only common factor is 1.

the answer would be 1

when you compare the 2 you can see othe only common factor is 1

Answer:

The first two digit number divisible by 6 is 12 and The last two digit divisible by 6 is 96 Let a=12, d=6, an=96

Step-by-step explanation:

Answer:

There are 15 2 digit numbers which are divisible by 6.

The cost of 5 pairs of shoes is 108.78 dollars.

The cost of 3 pairs of shoes is $65.27. At this price, the cost of 5 pairs of shoes can be calculated as follows:

Let's find the cost of each pair of shoes before we can get the cost of 5 pairs of shoes.

Therefore,

3 pairs of shoe = 65.27 dollars

1 pair of shoes = ?

cross multiply

cost of each pair = 65.27 / 3

cost of each pair = 21.76 dollars

Therefore, the cost of 5 pairs of shoes can be found as follows:

cost of 5 pairs of shoes = 21.76 × 5

cost of 5 pairs of shoes = 108.783333333

Therefore,

cost of 5 pairs of shoes = 108.78 dollars

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Y = 1. 36 - 0. 07x - 0. 05y = 0.74 when we maximize it using the given constraints.

The constraints are ,

x ≥ 0

y ≥ 0

y ≥ -x + 10

y ≤ - x + 15

y ≤ 2/3x

On maximizing  Y = 1. 36 - 0. 07x - 0. 05y,

y ≥ -x + 10

=> x <= 10 - y

and

y ≤ - x + 15

=> x <= 15 - y

we get the result as

0.74.

An equation states that two variables are equal. It will have an equals sign "=", similar to this:

So an equation is like a statement "this equals that".

Each term in the linear equation is either a constant, a single variable, or a constant product. The general form of two-variable linear equations is provided by

Y = mx + c , m ≠ 0

Where m denotes the slope

C is the y-axis cutting point.

Linear equation with one variable, for example: 10x – 80 = 0

Two-variable linear equations: 9x + 6y – 82 =0

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Answer:

(0,1) and (7,-3)

Step-by-step explanation:

Check the attached image.

Hope this helps.

the formula for the perimeter (P) of an isosceles trapezoid is:

P = 2 * (base1 + base2) + leg1 + leg2

To find the perimeter of an isosceles trapezoid, follow these steps:

1. Identify the given measurements: In an isosceles trapezoid, know the lengths of the two parallel sides (the bases) and the two non-parallel sides (the legs).

2. Add the lengths of the bases: Add the lengths of the two parallel sides (bases) of the trapezoid.

3. Multiply the sum by 2: Multiply the sum from step 2 by 2 to account for both sides of the trapezoid.

4. Add the lengths of the legs: Add the lengths of the two non-parallel sides (legs) of the trapezoid.

5. Add the results: Add the results from steps 3 and 4 to find the perimeter of the isosceles trapezoid.

Mathematically, the formula for the perimeter (P) of an isosceles trapezoid is:

P = 2 * (base1 + base2) + leg1 + leg2

Alternatively, know the lengths of all four sides of the trapezoid, simply add them together to find the perimeter.

Keep in mind that the measurements used in the formula should be in the same unit (e.g., centimetres, inches) for accurate results.

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Answer:

Step-by-step explanation:

P = a + b + 2c

where a is the top, b is the bottom, and c is a leg of the trapezoid. The perimeter is the sum of the outer edge of the shape, so you just need to add the lengths of the sides.

Answer:

A. ∠FHE

B. segment HF = 34.1  equation sin(36 × 58 then round to the nearest tenth

Step-by-step explanation:

For A you find the third angle of triangle FHG  by doing 180° - 36° - 90° = 56° so ∠GHF is 56° and ∠EHG is a right angle so 90° - 56° = 36° so ∠ FHE is 36°

For B is a trigonometry problem so you have to do the Sine(36 which is 0.587785252and you × by 58 cause sin is opposite over hypotenuse.

I hope this makes sense, I'm not very good at explaining.

Length is 4mm and TSA is 120п mm.

Length of a cylinder is equals to the height of the cylinder, so length is 4mm.

Total surface area of a cylinder = 2пr(r+h)

TSA= 2п(6) (6+4)

     = 12п(10)

     = 120п mm

What is a cylinder?

One of the fundamental three-dimensional shapes in geometry is the cylinder, which has two distant, parallel circular bases. At a predetermined distance from the centre, a curved surface connects the two circular bases. The axis of the cylinder is the line segment connecting the centres of two circular bases. The height of the cylinder is defined as the distance between the two circular bases.

What is TSA?

The area including the base(s) and the curved portion is referred to as the total surface area. It is the overall area that the object's surface occupies. The total area of a shape with a curved base and surface is equal to the sum of the two areas.

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Length is 4mm and TSA is 120п mm.

Length of a cylinder is equals to the height of the cylinder, so length is 4mm.

Total surface area of a cylinder = 2пr(r+h)

TSA= 2п(6) (6+4)

    = 12п(10)

    = 120п mm

One of the fundamental three-dimensional shapes in geometry is the cylinder, which has two distant, parallel circular bases. At a predetermined distance from the centre, a curved surface connects the two circular bases. The axis of the cylinder is the line segment connecting the centres of two circular bases. The height of the cylinder is defined as the distance between the two circular bases.

The area including the base(s) and the curved portion is referred to as the total surface area. It is the overall area that the object's surface occupies. The total area of a shape with a curved base and surface is equal to the sum of the two areas.

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Answer:

h(1 + n) = 2n - 2

Step-by-step explanation:

To find h(1 + n), substitute n = 1 + n into h(n) , that is

h(1 + n) = 2(1 + n) - 4 = 2 + 2n - 4 = 2n - 2

Answer:

what is the number that you are trying to see how far it is from 0 on the number line?

Step-by-step explanation:

Answer:

The absolute value of a number is the distance from zero to that number on the number line.

I am not sure this is what you quite need, will edit if I can Fix it.

Answer:

1.1 cm or 7.9 cm

Step-by-step explanation:

Given:

Point D mark for 4.5 cm

Distance between points D and E =3.4 cm

Find:

Location of point E

Computation:

Assume;

Point o = 0 cm mark

Point E = Point D mark - Distance between points D and E

Point E = 4.5 cm - 3.4 cm

Point E = 1.1 cm

or

Point E = Point D mark + Distance between points D and E

Point E = 4.5 cm  + 3.4 cm

Point E = 7.9 cm

Answer:

1/190

Step-by-step explanation:

To calculate the probability of drawing 2 white marbles and 1 blue marble without replacement, we need to consider the total number of ways to choose 3 marbles out of the total number of marbles in the bag.

The total number of marbles in the bag is 5 + 7 + 2 + 6 = 20.

First, let's calculate the number of ways to choose 2 white marbles out of the 2 available:

Number of ways to choose 2 white marbles = (2 choose 2) = 1

Next, we need to calculate the number of ways to choose 1 blue marble out of the 6 available:

Number of ways to choose 1 blue marble = (6 choose 1) = 6

Now, we can calculate the total number of ways to choose 3 marbles out of the 20 marbles in the bag:

Total number of ways to choose 3 marbles = (20 choose 3) = 1140

Finally, we can calculate the probability by dividing the number of favorable outcomes (2 white marbles and 1 blue marble) by the total number of possible outcomes:

Probability = (Number of favorable outcomes) / (Total number of possible outcomes)

= (1 * 6) / 1140

= 6 / 1140

= 1 / 190

The average value of the step function u(x) on [-1,1] is 1/2, is 1/2

A step function (also called as staircase function) is defined as a piecewise constant function, that has only a finite number of pieces. In other words, a function on the real numbers can be described as a finite linear combination of indicator functions of given intervals.

The average value of the step function u(x) on the interval [-1,1] can be calculated by integrating u(x) over the given interval and dividing the result by the length of the interval.

We have:

∫[-1,1] u(x)dx = ∫[-1,0] 0dx + ∫[0,1] 1dx = 1 - 0 = 1

Therefore, the average value of u(x) is = (1/2)(1 - 0) = 1/2

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A current account surplus occurs when a country's total exports of goods, services, and transfers exceed its total imports. This means that the country is exporting more than it is importing, resulting in a positive balance of trade.

There are several reasons why a current account surplus may occur:

1. Strong Export Performance: When a country's industries are competitive and can produce goods and services that are in high demand globally, its exports will increase. This can be due to factors such as low production costs, high-quality products, or unique resources.

2. Weak Import Demand: If a country's domestic demand for imported goods and services is low, it can contribute to a current account surplus. This may be influenced by factors such as a slow economy, high savings rate, or government policies that discourage imports.

3. Currency Exchange Rates: A country with a relatively weak currency can have an advantage in international trade. A weaker currency makes its exports more affordable and competitive in foreign markets, boosting exports and potentially leading to a current account surplus.

4. Favorable Terms of Trade: When a country experiences an improvement in the terms of trade, it means that the prices of its exports increase relative to the prices of its imports. This can lead to higher export revenues and a current account surplus.

5. Foreign Investment Income: If a country receives significant income from investments abroad, such as profits, dividends, or interest, it can contribute to a current account surplus. This income adds to the country's earnings from exports and reduces its reliance on imports.

6. Capital Inflows: When foreign investors invest in a country's assets, such as stocks, bonds, or real estate, it leads to capital inflows. These inflows can contribute to a current account surplus as they increase the country's financial account balance.

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The variance for the sample mean is 0.0001 cm².

To find the variance for the sample mean of 4 computer chips with a mean of 0.95 centimeters and a standard deviation of 0.02 centimeters, you can follow these steps:

1. Note the population mean (µ) = 0.95 cm and population standard deviation (σ) = 0.02 cm.
2. Identify the sample size (n) = 4.
3. Calculate the variance for the sample mean using the formula: variance of sample mean = (σ²) / n.

In this case, the variance of the sample mean is:

Variance of sample mean = (0.02 cm)² / 4 = 0.0004 cm² / 4 = 0.0001 cm².

So, the variance for the sample mean of the 4 computer chips is 0.0001 cm².

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