How much more did Japan pay for coal in 2014 than typical prices in Europe, on a percentage basis? If Japan paid $10 while Europe paid $5, you would answer 100%.

Answer:

t=13.75

Step-by-step explanation:

The main answer, incorporating the continuity correction, is P(X < 8.5), where X represents a random variable.

To calculate the probability of X being fewer than 8 (excluding 8) with continuity correction, we can use the normal approximation to the binomial distribution.

Assuming X follows a binomial distribution, we can approximate it with a normal distribution by adjusting the boundaries of the interval. In this case, since we want fewer than 8 (excluding 8), we use the continuity correction and consider the interval as (X < 8.5).

We can then calculate the probability using the cumulative distribution function (CDF) of the normal distribution for X = 8.5. The resulting probability represents the likelihood of observing fewer than 8 (excluding 8) occurrences.

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Answer:

Hope this helps...

Step-by-step explanation:

From the graph we notice that the lines are parallel. This means that the slopes of the lines representing the cost are the same. Since the slope represents the price per mile travel we conclude that:

The mileage at both companies is the same.

Therefore the answer is B

Answer:

you can count by groups of 9 and there would be 4 groups

9 + 9 + 9 +9 = 36 and 36/9 = 4

Answer:

\(-1\)

Step-by-step explanation:

This is a really nice line that goes through a lot of grid points (where the lines intersect).

One easy way to find the slope is the phrase "rise over run."  "Rise" is the name for vertical motion from point-to-point.  "Run" is the name for horizontal motion from point-to-point.

Pick two easy points on the line, say (0, 0) and (1, -1).

If you go from (0, 0) to (1, -1), the rise is -1 -- because you went DOWN 1 unit.

The run is 1 -- because you went RIGHT 1 unit.

\(\frac{\text{rise}}{\text{run}} =\frac{-1}{1} =-1\)

The slope is -1.

Cool fact:  You'll get the same value if you use any two points on the line.

Answer:

4.79

Step-by-step explanation:

4.79 is reasonable for the problem

The price of one paint set before the sale is $4.79

We are expected to determine the price of one paint set before the sale.

From the information given:

∴

The amount at which Yuri bought 1 paint set is:

\(\mathbf{= \dfrac{\$6.88}{2.0}}\)

= $3.44

Recall that during the sale, the store reduce the price of each paint set by $1.35

Therefore, the price of one paint set before the sale is = $3.44 + $1.35 = $4.79

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Answer: domain is x and range is y

Step-by-step explanation:

Answer:

Domain: {2, 8, 30, 46}
Range: {-1, 9, 16}

Step-by-step explanation:

The domain of a function y = f(x)  is the set of all values that the input values (x) that the function can accept. The range of a function is the set of all output values that the function can produce from the domain values ie the set of all  values

Looking at the figure, the set of all x values that the function y can take are
{2, 8, 30, 46} and this is the domain

The output values produced from this domain are {-1, 9, 16} and that is the range

Answer:

sure but whats the question

Step-by-step explanation:

The interquartile range IQR for the given data set is IQR=10

A box and whisker plot, often known as a box plot, shows a data set's five-number summary. The minimum, first quartile, median, third quartile, and maximum make up the five-number summary. A box is drawn from the first quartile to the third quartile in a box plot. At the median, a vertical line passes through the box.

Finding the median, lower quartile, and upper quartile of a given set of data (Q2, Q1, and Q3) is the first stage in creating a box-and-whisker figure. Now that you know how to calculate the interquartile range (IQR). The distance between the upper and lower quartiles is known as the interquartile range.

Lower data set:

70 73 81 84

Q1=73+81/2=77

Middle data set

65 70 75 80

Q2= 70+75/2=72.5

Upper data set

85 87 90

Q3=87

IQR=Q3-Q1=87-77=10

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I'll just do red for now, but if you're very desperate I guess I'll help with a few more lol. It's just a lot of typing and my computer is at 6% :)

RATIO:

Ratios are another way of comparing things. It's almost like a fraction, except that it can look like x:y.

I'm guessing you're comparing all of the reds to the total amount, which should be 39. Put 5 in for x and 39 for y to make it look like 5:39.

DECIMAL:

Oh decimals are so fun...

Just divide 39 by 5. The answer to red's decimal is 7.8.

PERCENTAGE:

Percentage can come a little bit confusing to some people, so I'll explain this the best I can.

Basically, all you have to do to find it is divide the number you're making into a percentage by the total amount, then multiply it.

5/39 x 100

0.1282051282 x 100

12.8205128205

I'm going to the nearest hundredth which is 12.82.

Your percentage is %12.82

(If you're rounding to the nearest whole number, it'll be %13)

THEORETICAL:

For this simplify your ratio. 5/39 cannot simplify, so just leave it as 3/39.

Sorry, sometimes I come out a little confusing, so just try not to think too hard about what I'm trying to say if you're confused more lol. Anyway my computer is going to die so I'll go now :)

Answer:

2mx-x+2018

Step-by-step explanation:

multiply each term in the parentheses by x

Answer: 50.9091 percent

Answer: At least $91.91

Step-by-step explanation:

From the question, we are informed that to avoid a service​ fee, the checking account balance must be at least ​$500 at the end of each month.

Since the current balance is ​$525.17 and $117.08 has been spent, the balance will now be:

= $525.17 - $117.08

= $408.09

Since the checking account balance must be at least ​$500 at the end of each month and we currently have $408.09, this means that there will still be a need to add $91.91.

= $500 - $408.09

= $91.91

At least $91.91 must be added to avoid the fee.

All of the above factors - confidence level, required precision (margin of error), and the degree of variation in the population as measured by its standard deviation - are used to determine sample size.

When determining the sample size for a study or survey, several factors need to be considered: confidence level, required precision (margin of error), and the degree of variation in the population as measured by its standard deviation. Let's break down each factor and understand how they contribute to determining the sample size:

Confidence Level: The confidence level represents the degree of certainty or confidence desired in the results. It is typically expressed as a percentage (e.g., 95% or 99%). The higher the confidence level, the more confident we can be that the estimated result falls within a certain range. For example, a 95% confidence level means that if the study were repeated 100 times, we would expect the true population parameter to fall within the estimated range in 95 out of those 100 times.

Required Precision (Margin of Error): The required precision, also known as the margin of error, defines the acceptable amount of uncertainty or error allowed in the estimation. It represents the maximum difference between the estimated result and the true population parameter that is considered acceptable. A smaller margin of error indicates higher precision and vice versa. For instance, if you want to estimate the proportion of people supporting a particular political candidate with a margin of error of ±3%, it means that the estimated proportion should be within 3% of the true proportion.

Degree of Variation (Standard Deviation): The degree of variation in the population, quantified by its standard deviation, reflects how much the values within the population differ from the population mean. If the population has a high standard deviation, it suggests a larger spread of values, indicating greater heterogeneity. Conversely, a low standard deviation implies less variability and more homogeneity in the population. The standard deviation helps determine how much information is needed from the sample to make accurate estimates of the population parameters.

These factors are interrelated in determining the sample size. As the confidence level increases, the margin of error becomes smaller, requiring a larger sample size to achieve the desired precision. Similarly, a higher degree of variation in the population (larger standard deviation) necessitates a larger sample size to capture that variability accurately.

In summary, the confidence level, required precision (margin of error), and degree of variation (standard deviation) are essential factors used in determining the appropriate sample size for a study or survey. The balance between these factors ensures that the sample is representative enough to provide reliable estimates of the population parameters with the desired level of confidence and precision.

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The total surface area of the pyramid is: 208.88 m²

The surface area of the pyramid is simply the sum of the areas of all the given surfaces.

Formula for the area of a triangle is:

Area = ¹/₂bh

where:

b is base

h is height

Area of four side triangles = 4(¹/₂ * 8 * 12) = 192 m²

Using Pythagoras theorem, the height of the base triangle is:

x = 4.22

Area of base = ¹/₂ * 8 * 4.22 = 16.88 m²

Total surface area = 192 + 16.88

= 208.88 m²

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Answer:

22 Units

Step-by-step explanation:

Answer:

\(\frac{11}{45}\)

Step-by-step explanation:

\(\frac{55}{225}\) ( divide numerator and denominator by 5 )

= \(\frac{11}{45}\) ← in simplest form

a fraction is in simplest form when no other number but 1 divides into the numerator and denominator.

Answer:

Answer C:     102

Step-by-step explanation:

The correct answer for the question is 102. I did the quiz and got it right.

                    Hope this helps you!

                                        ~Me ^^

Answer:

9. x>-4 or x≥1

10. a<2 or a≥-5

11. v≤7 or v≥-4

12. k≥5 or k<8

13. n>6.8 and n≤9

Step-by-step explanation:

9. -2x-7>1

-2x>8

x>-4

x-2≥-1

x≥1

10.a/-2 <-1

a<2

-4a+3≥23

-4a≥20

a≥-5

11. 6v+38≤-4

6v≤-42

v≤7

2(v+3)≥-2

2v+6≥-2

2v≥-8

v≥-4

12. 4(1-k)≥-16

4-4k≥-16

-4k≥-20

k≥5

7-6k<-41

-6k<-48

k<8

13. 10n-9>-59

10n>-68

n>6.8

n-6≤3

n≤9

Answer:

\(r=-2\)

Step-by-step explanation:

First, apply the distributive property: A(B + C) = AB + AC

\(-8r-3(-6-5r)=8-5(4-2r)\)

\(-8r+18+15r=8-20+10r\)

Then, get all of the r's on one side.

\(-8r+18+15r=8-20+10r\)

↓ subtract 18 from both sides

\(-8r+15r=8-2+10r\)

↓ subtract 10r from both sides

\(-8r+5r=8-2\)

Finally, solve for r by combining like terms, then dividing by -3.

\(-3r = \ 6\\\overline{\, -3 \: } \ \ \ \ \overline{-3}\)

\(r = -2\)

In Houston, Texas, the variation of sunlight during the year can be modeled by the sine function. Given that there are 12 hours and 9 minutes of sunlight during the spring equinox, and the longest and shortest day varies from the equinox by 1 hour and 55 minutes. Therefore, the variation of hours of sunlight in Houston, Texas, can be modeled using the sine function as follows: \(f(x) = Asin(B(x - C)) + D\)

where; A is the amplitude of the sine function, which is given by (Max - Min) / 2A = (Max - Min) / 2

= (13h 4m - 10h 14m) / 2 = 1h 25mB is the period of the sine function, which is given by 2π / B = 365 days

B = 2π / 365 ≈ 0.017

C is the horizontal shift of the function, which corresponds to the day of the year when the maximum or minimum daylight occurs. Since the longest and shortest day of the year varies from the equinox by 1 hour and 55 minutes, then the maximum and minimum daylight will occur on June 20th and December 22nd, respectively. Therefore, the horizontal shift can be found as follows:

C = 80D is the vertical shift of the function, which is the average daylight duration throughout the year.

Since there are 12 hours and 9 minutes of sunlight during the spring equinox, the vertical shift can be found as follows: \(D = (Max + Min) / 2\)

= (13h 4m + 10h 14m) / 2

= 11h 39m

Putting all the values together,

f(x) = Asin(B(x - C)) + D = 1h 25m

sin(0.017(x - 80)) + 11h 39m.

Therefore, this is the function that relates the number of days away from the spring equinox to the variation in hours of sunlight in Houston.

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The tensions in each side of the rope will be the same when Nellie Newton hangs at rest in the middle of a clothesline and the lengths of each rope are the same.

When Nellie Newton is in equilibrium, meaning she is at rest and not experiencing any acceleration or movement, the forces acting on her must be balanced. In the case of a clothesline, the tension in each side of the rope contributes to the balancing of forces.

For the tensions to be the same in each side of the rope, the lengths of the ropes must also be the same. This ensures that the forces applied to each side are equal and balanced, resulting in Nellie Newton remaining in a stable position without any net force acting on her.


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The critical value if the hypothesis is to be tested at the 0.05 level of significance is 1.96 . So, option C is the correct answer.

To test the hypothesis that Woof Chow has a market share of 25%, we need to conduct a hypothesis test with the null hypothesis that the true proportion of dog owners who use Woof Chow is 0.25, and the alternative hypothesis that the true proportion is not 0.25.

Since the sample size n is large (n = 100), we can use the normal distribution to perform this test. The critical value for a two-tailed test at the 0.05 level of significance is given by:

z_critical = ±1.96

This value corresponds to the 2.5th and 97.5th percentiles of the standard normal distribution. The critical value is ±1.96 because we want to be 95% confident that the true proportion of dog owners who use Woof Chow is within a certain range, and the 95% confidence interval corresponds to two standard deviations from the mean.

To determine whether or not to reject the null hypothesis, we would calculate a test statistic (z-score) based on the sample proportion, and compare it to the critical value. If the test statistic falls outside the critical value, we would reject the null hypothesis and conclude that Woof Chow does not have a market share of 25%.

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Answer:

2 3/7

Step-by-step explanation:

Answer:

2^\(\frac{3}{2}\)

Step-by-step explanation:

2^3·1/2 = 2^\(\frac{3}{2}\)

the image you posted is very blurry, but it looks like the answer is the last choice

*see attachment for the diagrambifbthe mapping

Answer:

{x | x = –5, –3, 1, 2, 6}

Step-by-step explanation:

The domain of a function includes all input values entered in the oval for input, while the range includes all the values in the output oval.

From the mapping given in the attachment, we have the following possible values of the function in the input oval as: -5, -3, 1, 2, 6.

These x-values make up the domain of the function, and represented as: {x | x = –5, –3, 1, 2, 6}

Answer:

would not be able to use 3 1/2 ft

Step-by-step explanation:

8.5 + 4.5 > 3rd side   ∴ 3rd side must be less than 13 feet

4.5 + 3rd side > 8.5   ∴ 3rd side must be greater than 4 feet

Answer:

42?

Step-by-step explanation:

Answer:

84

Step-by-step explanation:

Multiples of 3 in this range: 63, 66, 69, 72, 75, 78, 81, 84, 87, 90, 93, 96, 99, 102, 105

Multiples of 6 in this range: 66, 72, 78, 84, 90, 96, 102

Multiples of 7 in this range: 63, 70, 77, 84, 91, 98, 105

If we look at these multiples, we see that 84 is the only number to show up in every list. Meaning, the answer is 84.

The records that determines the lost of different crops grown on the farm during the whole year with an annual profitability of the farm is farm income statement.

Others are:

The kinds of farms sales records are:

Cash flow statement is known to be the records that shows flows of sales intake and out of any enterprise. In terms of farming one can say farm Diary record.

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