How do you solve
-4x- 10y + 6 + 10

The sampling method that is most likely to be appropriate for calculating confidence intervals is simple random sampling.

This method ensures that every member of the population has an equal chance of being selected for the sample. This reduces the risk of bias and ensures that the sample is representative of the population. Stratified sampling is also a useful method for calculating confidence intervals, especially when the population has subgroups that need to be represented in the sample. However, other sampling methods like convenience sampling or quota sampling are not appropriate for calculating confidence intervals as they can introduce bias into the sample and do not guarantee a representative sample. Therefore, it is important to use an appropriate sampling method when calculating confidence intervals to ensure that the results accurately reflect the population.

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a. The table value of z 0.99 is given as 2.58.

b. we use σ = 2.30 minutes.

c. The value of Z is given as 0.609.

d. The confidence interval is (23.391, 24.609) minutes.

a) To find the z-score for a 0.99 confidence interval, we need to find the z-score that leaves 0.5% (since it's two-tailed, we split the 1% or 0.01 of the data that's not within the confidence interval into two) in each tail. The z-score for 0.995 (0.5% in the upper tail) is approximately 2.58 in standard normal distribution tables. So, Z_0.99 is 2.58.

b) Therefore, we use σ = 2.30 minutes.

c) The standard error of the mean (SE) is given by σ/√n, where n is the sample size.

Here, σ = 2.30 minutes and n = 95.

Therefore, SE = σ/√n

= 2.30/√95

= 0.236 minutes.

Multiply this by the z-score to find Z * σ/√n.

Therefore, Z * σ/√n = 2.58 * 0.236 ≈ 0.609.

d) The 0.99 confidence interval for μ

Here, x is the sample mean which is 24 minutes.

So the confidence interval is approximately

= (24 - 0.609, 24 + 0.609)  

= (23.391, 24.609) minutes.

This is the range of values we are 99% confident that the true population mean (μ) falls in.

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Answer:

the answer is 183.77

Step-by-step explanation:

if you know the price was 7.99 for each one he bought you work multiply 23 by 7.99 and you get 183.77.

The relative frequency of landing on both heads or both tails is = 0.498.

A fundamental principle of probability theory known as the Law of Big Numbers asserts that as the number of independent trials in an experiment rises, the average of the results obtained gets closer to the experiment's predicted value. In other words, the relative frequency of an event approaches its real probability as the sample size grows. This law offers a theoretical framework for drawing conclusions about statistics from empirical evidence. One of the cornerstones of probability theory, the Law of Big Numbers has numerous crucial applications.

From the given table we determine that,

The relative frequency of landing on heads is 254 / 1000 = 0.254.

The relative frequency of landing on tails is 244 / 1000 = 0.244.

Thus, relative frequency of landing on both heads or both tails is (254 + 244) / 1000 = 498 / 1000 = 0.498.

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\(\begin{cases} x=-5\implies &x+5=0\\ x=3\implies &x-3=0 \end{cases}\qquad \implies \underline{a(x+5)(x-3)~~ = ~~\stackrel{0}{y}} \\\\\\ \stackrel{\textit{we also know that}}{P(0)=-30}\implies \begin{cases} x=0\\ y=-30 \end{cases}\implies a(0+5)(0-3)~~ = ~~-30 \\\\\\ a(5)(-3)=-30\implies -15a=-30\implies a=\cfrac{-30}{-15}\implies \boxed{a=2} \\\\[-0.35em] ~\dotfill\\\\ 2(x+5)(x-3)=y\implies 2(\stackrel{F~O~I~L}{x^2+2x-15})=y\implies \underline{2x^2+4x-30=y}\)

Check the picture below.

The prediction for the number of passwords in which the first character is a number is given as follows:

139 passwords.

A probability is calculated as the division of the desired number of outcomes by the total number of outcomes in the context of a problem/experiment.

The passwords have the first character chosen as follows:

Hence the probability of a number is given as follows:

p = 10/(10 + 26)

p = 10/36

p = 5/18.

Out of 500 passwords, the expected number is then given as follows:

E(X) = 500 x 5/18

E(X) = 139 passwords.

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Given the proportional graphs represnting the ride of Kiran and Mai, thus:

Recall:

A proportional graph has a line that passes through the origin (0, 0), and also has a constant of proportionality, k.

Constant of proportionality, k = y/x.

1. Given that Kiran rides for 4 miles in 16 minutes, therefore the upper graph that passes through point (4, 16) goes with Kiran.

Given that Mai's points include (1, 3), (4, 12), and (10, 30), these points are on the lower graph, therefore, the lower graph goes with Mai.

2. The graph with the smallest constant of proportionality value represents the graph that goes with the fastest rider. The constant of proportionality in this case represents how many minutes spent on covering 1 mile. The shorter the minutes, the faster.

k = y/x = 16/4 = 4 mins per mile

k = y/x = 3/1 = 3 mins per mile

3. At 20 minutes, using the graph given, Kiran will be at 5 miles far.

At 20 minutes, Mai will be at almost 7 miles.

4. At the end of 12 mile path, the graph shows that Kiran will have used 48 minutes (12, 48), while Mai would have used 36 minutes (12, 36).

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Answer:

Therefore, the book value of the equipment at the end of year four (including year four) is $2,880.

Step-by-step explanation:

To calculate the book value of the equipment at the end of year four using the MACRS method with GDS recovery period of five years, we can use the following steps in Excel:

1. Open a new Excel spreadsheet and create the following headers in row 1: Year, Cost, Depreciation Rate, Annual Depreciation, Cumulative Depreciation, and Book Value.

2. Fill in the Year column with the years 1 through 6 (since the truck has a life of six years).

3. Enter the cost of the truck, $12,000, in cell B2.

4. Use the following formula in cell C2 to calculate the depreciation rate for each year:

=MACRS.VDB(B2, 5, 5, 1, C1)

This formula uses the MACRS.VDB function to calculate the depreciation rate for each year based on the cost of the truck (B2), the GDS recovery period of five years, the useful life of six years, the salvage value of $2,000, and the year (C1).

5. Copy the formula in cell C2 and paste it into cells C3 through C7 to calculate the depreciation rate for each year.

6. Use the following formula in cell D2 to calculate the annual depreciation for each year:

=B2*C2

This formula multiplies the cost of the truck (B2) by the depreciation rate for each year (C2) to get the annual depreciation.

7. Copy the formula in cell D2 and paste it into cells D3 through D7 to calculate the annual depreciation for each year.

8. Use the following formula in cell E2 to calculate the cumulative depreciation for each year:

=SUM(D$2:D2)

This formula adds up the annual depreciation for each year from D2 to the current row to get the cumulative depreciation.

9. Copy the formula in cell E2 and paste it into cells E3 through E7 to calculate the cumulative depreciation for each year.

10. Use the following formula in cell F2 to calculate the book value of the equipment for each year:

=B2-E2

This formula subtracts the cumulative depreciation for each year (E2) from the cost of the truck (B2) to get the book value.

11. Copy the formula in cell F2 and paste it into cells F3 through F7 to calculate the book value for each year.

12. The book value of the equipment at the end of year four (including year four) is the value in cell F5, which should be $2,880.

Answer:

size of the dog

Step-by-step explanation:

Hope this helps

Option B is the correct answer.

Given that, the amount of time it takes to give a dog a bath is most likely to be a function of the _____.

In mathematics, a function from a set X to a set Y assigns to each element of X exactly one element of Y. The set X is called the domain of the function and the set Y is called the codomain of the function.

The amount of time it takes to give a dog a bath is directly proportional to the size of the dog.

Therefore, option B is the correct answer.

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Answer:

i think b,c,d and f

Step-by-step explanation:

The correct answer is -4/5 using the slope formula.

Answer:

z=-5; x=0 ; y=3

Step-by-step explanation:

2x= -2z -10; -2z-10+y-z=8; y-3z-10=8; y-3z=18

2y-3z=21; 2y=3z+21; y= 1.5z+10.5; y-3z=18

1.5z+10.5-3z=18; -1.5z+10.5=18; -1.5z=7.5; z=-5

x+z=-5; x-5=-5; x=0; 2y-3z=21; 2y+15=21; 2y=6; y=3

2x+y-z=8; 2(0)+3-(-5)=8; 3+5=8; 8=8

There are 7 possibilities for Erica's swim schedule if she goes swimming three out of the seven days of the week, considering that she can swim on Monday or Tuesday, or both.

To determine the number of possibilities for Erica's swim schedule, we need to consider the days she can choose for swimming. In this case, she can swim on Monday, Tuesday, or both.

If she swims on Monday, she has two options for the remaining two days: she can swim on any of the remaining six days or choose not to swim on those days. Similarly, if she swims on Tuesday, she has the same two options for the remaining two days.

If she swims on both Monday and Tuesday, she has only one option left for the remaining day.

Therefore, the total number of possibilities for Erica's swim schedule is calculated by adding the possibilities for each scenario: 2 + 2 + 1 = 5 possibilities.

In conclusion, there are 7 possibilities for Erica's swim schedule if she goes swimming three out of the seven days of the week, considering that she can swim on Monday or Tuesday, or both.

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Answer:

Ma yasakō lāgi māphī cāhanchu.

Answer

put 1 on top and exo on bottom

Step-by-step explanation:

Answer: 3750

Step-by-step explanation:

Answer:

x -7 < -4

Step-by-step explanation:

Answer:

-7/9

Step-by-step explanation:

the slope of a line between two points is 'rise over run', or the vertical distance between the points divided by the horizontal distance between them.

Finding the change in either direction is done by simply subracting our starting value from our ending value. It does not matter which point you start at, but lets choose (-6,-7) as our starting point, and (-24,7) as our end point.

The 'rise' of this line is 7 - (-7), which equals 14

The 'run' would then be -24 - (-6), which equals -18

Thus the slope is 14/(-18). Reducing this fraction gives us an answer of -7/9.

Answer:

C

Step-by-step explanation:

I know my reflections =D

Mark as brainliest ;D

Answer:

c

Step-by-step explanation:

Answer:

3,000 words

Step-by-step explanation:

Answer:

c

Step-by-step explanation:

just did the test

The numbers of the jerseys of 5 randomly selected Carolina Panthers would fall under the category of quantitative discrete data.

Quantitative data are numerical measurements or counts that can be added, subtracted, averaged, or otherwise subjected to arithmetic operations. Discrete data, on the other hand, can only take on specific, whole number values, as opposed to continuous data which can take on any value within a range.

Qualitative data, on the other hand, are non-numerical data that cannot be measured or counted numerically. Examples include colors, names, opinions, and preferences. Since the numbers of the jerseys are specific numerical values, they are considered quantitative data.

Since they can only take on specific, whole number values (i.e. the jersey numbers are not continuous values like weights or heights), they are considered discrete data. Therefore, the correct option for the given question is option "quantitative discrete".

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The correct answer is (b) only believe those statistics that are adequately supported.The best approach is to use critical thinking and assess the support for each statistic before accepting it as true.

When reading published statistics, it's important to be critical and evaluate their reliability. Not all statistics are created equal, and some may be biased, misleading, or based on flawed data.

One way to do this is to look for adequate support for the statistics. This means checking the source of the statistics, the methodology used to collect and analyze the data, the sample size and demographics, and any potential biases or limitations. If the statistics are adequately supported, then they are more likely to be accurate and trustworthy.

In contrast, it's not wise to automatically believe or reject all statistics without careful evaluation. Similarly, just because statistics are published doesn't mean they are correct or reliable.

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Answer:

\(\displaystyle \frac{d}{dx} \Big [ \frac{3}{x^2} \Big ]=-\frac{6}{x^3}\)

Step-by-step explanation:

We can use either the Power Rule or the Quotient Rule to find the derivative of 3/x².

Rewrite \(\displaystyle \frac{3}{x^2}\) as \(\displaystyle 3\cdot \frac{1}{x^2}\) which is equivalent to \(3\cdot x^-^2\).

Now we can apply the power rule to 3x⁻². Subtract 1 from the exponent and multiply the coefficient by -2.

This can be rewritten as \(\displaystyle -\frac{6}{x^3}\).

Substituting 3 for f(x) and x² for g(x), we get:

Simplify.

Using exponent rules, we can rewrite this as:

This can be rewritten as \(\displaystyle -\frac{6}{x^3}\), which is the same as what we got using the product rule.

Answer:

\(\displaystyle \frac{d}{d x}\left[\frac{3}{x^2}\right] = -\frac{6}{x^{3}}\).

Step-by-step explanation:

Let \(f(x)\) and \(g(x)\) denote two functions of \(x\). Assume that \(g(x) \ne 0\). The quotient rule states that:

\(\displaystyle \frac{d}{d x}\left[\frac{f(x)}{g(x)}\right] = \frac{{f}^\prime(x) \cdot g(x) - f(x) \cdot g^{\prime}(x)}{{(g(x))}^2}\).

In this question:

Find \({f}^{\prime}(x)\) and \({g}^{\prime}(x)\).

Notice that the value of \(f(x)\) is constantly \(3\) regardless of the value of \(x\). By the constant rule, \({f}^{\prime}(x) = 0\).

For \({g}^{\prime}(x)\), consider the power rule:

if \(m\) represents a rational number (such as \(2\),) then by the power rule, \(\displaystyle \frac{d}{d x}\left[{x}^{m}\right] = m\, {x}^{m-1}\).

Apply this rule to find \({g}^{\prime}(x)\).

\(\begin{aligned}{g}^{\prime}(x) &= \frac{d}{d x} \left[x^{2}\right] \\ &= 2\, x^{2 - 1} \\ &= 2\, x\end{aligned}\).

Substitute \(f(x) = 3\), \({f}^{\prime}(x) = 0\), \(g(x) = x^{2}\), and \({g}^{\prime}(x) = 2\, x\) into the quotient rule expression to find \(\displaystyle \frac{d}{d x}\left[\frac{3}{{x}^{2}}\right]\):

\(\begin{aligned}&\; \frac{d}{d x}\left[\frac{3}{{x}^{2}}\right] \quad \genfrac{}{}{0em}{}{\leftarrow f(x) = 3}{\leftarrow g(x) = {x}^{2}} \\ =&\; \frac{d}{d x}\left[\frac{f(x)}{g(x)}\right]\\ =&\; \frac{{f}^\prime(x) \cdot g(x) - f(x) \cdot g^{\prime}(x)}{{(g(x))}^2} \\ =& \; \frac{0 \, x^2 - 3\, (2\, x)}{\left({x}^{2}\right)} \\ =&\; -\frac{6}{x^{3}}\end{aligned}\).

Therefore, \(\displaystyle \frac{d}{d x}\left[\frac{3}{{x}^{2}}\right] = -\frac{6}{x^{3}}\).

Step-by-step explanation:

2+19=7x

21=7x

21÷7=7x÷7

3=x

..

89.09% of books will weigh 11 pounds or more, then the number of books will be 129.

The z-score is a numerical measurement used in statistics to refer to how much a given value differs from the standard deviation.

The weights of books in a bookcase are normally distributed with a mean of 11.6 pounds and a standard deviation of 1.3 pounds. There are 136 books on the bookshelf.

Then the z-score when the books will weigh 11 pounds or more will be

\(z= \frac{11-13.5}{2.3} \\\\z= -1.0869\)

Then the probability will be

\(P(x > 11) = 1-P(x < 11 ) = 0.8909\)

89.09% of books will weigh 11 pounds or more, then the number of the books will be

=145 × 0.8909

=129.1805 ≈ 129

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Answer:

66

Step-by-step explanation:

22 per minute

?   Per 3 minutes

22 x 3 = 66

Answer: The position of the whale relative to the surface of the water can be determined by multiplying the rate at which it descends (22 feet per minute) by the amount of time it has been descending (3 minutes).

Position = Rate x Time

Position = 22 feet/minute x 3 minutes = 66 feet

So, after diving for 3 minutes, the position of the whale relative to the surface of the water is 66 feet.

It means the whale descended for 66 feet from the surface level of the water.

Please keep in mind that this information is assuming a linear motion, without taking into account any other factors that could affect the whale's descent such as currents or obstacles in the water.

Step-by-step explanation:

Answer:

−4n - 5

Step-by-step explanation:

Answer:

-4n-5

Step-by-step explanation:

n+4-9-5n

n-5n-5

-4n-5

Answer: -6

Step-by-step explanation:

      The common difference is the difference (subtraction) between any two consecutive terms.

6 - 12 = -6

0 - 6 = -6

-6 - 0 = -6

      The common difference of this arithmetic sequence is -6.