A country in Europe has a population of 4.5×106 4.5 × 10 6 people. A neighboring country has a population of 2.6×107 2.6 × 10 7 people. What is the total population of the two countries?
A. 3.05 x 10 7 people
B. 7.1 x 10 7 people
C. 7.1 x 10 13 people
D. 3.05 x 10 14 people

Answer:

81.632

Step-by-step explanation:

For my answer what i did was i know that 1 kg is equal to 2.205 lbs so what id was i divided 2.205 lbs by 180 kg

Answer: $52.50

Step-by-step explanation:

There is $50 in the account and it earns interest at a rate of 5% a year.

This interest is not compounded therefore it is simple interest.

To calculate amount earned with simple interest is:

= Deposit * ( 1 + rate * time)

= 50 * ( 1 + 5% * 1 year)

= $52.50

\((\stackrel{x_1}{-6}~,~\stackrel{y_1}{-1})\qquad (\stackrel{x_2}{-4}~,~\stackrel{y_2}{2}) ~\hfill \stackrel{slope}{m}\implies \cfrac{\stackrel{rise} {\stackrel{y_2}{2}-\stackrel{y1}{(-1)}}}{\underset{run} {\underset{x_2}{-4}-\underset{x_1}{(-6)}}} \implies \cfrac{2 +1}{-4 +6} \implies \cfrac{ 3 }{ 2 }\)

\(\begin{array}{|c|ll} \cline{1-1} \textit{point-slope form}\\ \cline{1-1} \\ y-y_1=m(x-x_1) \\\\ \cline{1-1} \end{array}\implies y-\stackrel{y_1}{(-1)}=\stackrel{m}{\cfrac{3}{2}}(x-\stackrel{x_1}{(-6)}) \implies {\large \begin{array}{llll} y +1= \cfrac{3}{2} (x +6) \end{array}}\)

Answer:

     A B E

Step-by-step explanation:

Answer:

Here

Step-by-step explanation:

The altitude of Polaris, also known as the North Star, refers to its angle above the horizon when observed from a specific location on Earth.

The altitude of Polaris varies depending on the observer's latitude.

For an observer at the North Pole (latitude 90 degrees), Polaris appears directly overhead, at an altitude of 90 degrees. This means Polaris is at the zenith, the highest point in the sky.

For observers at other latitudes in the Northern Hemisphere, Polaris will appear lower in the sky. The altitude of Polaris is equal to the observer's latitude. For example, if you are at a latitude of 40 degrees north, Polaris will have an altitude of approximately 40 degrees above the horizon.

It's important to note that the altitude of Polaris remains relatively constant throughout the night and throughout the year due to its proximity to the celestial north pole. This makes it a useful navigational reference point for determining direction and latitude in the Northern Hemisphere.

To know more about North Star refer here:

https://brainly.com/question/32168908

#SPJ11

If many random samples of this size were taken and intervals constructed, 90% of them would contain the true population mean. In repeated sampling, about 90% of the constructed confidence intervals will capture the true population mean difference. The correct answer is C.

When we construct a confidence interval, it is important to understand its interpretation. In this case, the correct answer (Oc) states that if we were to take many random samples of the same size and construct confidence intervals for each sample, approximately 90% of these intervals would contain the true population mean difference.

This interpretation is based on the concept of sampling variability. Due to random sampling, different samples from the same population will yield slightly different sample means.

The confidence interval accounts for this variability by providing a range of values within which we can reasonably expect the true population mean difference to fall a certain percentage of the time.

In the given scenario, when constructing a 90% confidence interval for the paired difference, it means that 90% of the intervals we construct from repeated samples will successfully capture the true population mean difference, while 10% of the intervals may not contain the true value.

It's important to note that this interpretation does not imply a probability or chance for an individual interval to capture the true population mean. Once the interval is constructed, it either does or does not contain the true value. The confidence level refers to the long-term behavior of the intervals when repeated sampling is considered.

Learn more about confidence interval at https://brainly.com/question/15576092

#SPJ11

The hypothesis test is left-tailed because the financial analyst wants to test if the proportion of stock portfolios containing high-risk stocks is lower than 0.10.

In other words, they are interested in determining if the proportion is significantly less than the specified value of 0.10. A left-tailed hypothesis test is used when the alternative hypothesis suggests that the parameter of interest is smaller than the hypothesized value. In this case, the alternative hypothesis would be that the proportion of stock portfolios with high-risk stocks is less than 0.10.

By conducting a left-tailed test, the financial analyst is trying to gather evidence to support their claim that their clients have a lower proportion of high-risk stock portfolios. They want to determine if the observed data provides sufficient evidence to conclude that the true proportion is indeed less than 0.10, which would support their claim of a lower proportion of high-risk stocks.

Therefore, a left-tailed hypothesis test is appropriate in this scenario.

Learn more about financial here

https://brainly.com/question/31299651

#SPJ11

Answer:

The selected answer should be correct!

Step-by-step explanation:

I did the problem step by step and got 1 5/7 which is the simplified version of 1 15/21.

I hope this helped somewhat!!

Answer:

4 ways i think

Step-by-step explanation:

Hope this helps!

Answer:

its 20

Step-by-step explanation:

hope this helps

The answer is A. The normal distribution in its standardized form has a mean of 0 and a standard deviation of 1. This means that the distribution is centered around 0, and the spread of the data is determined by the standard deviation of 1. This is useful in statistical analysis because it allows us to compare data from different distributions on a standardized scale.

The normal distribution is a continuous probability distribution that is often used in statistical analysis. It is characterized by a bell-shaped curve and is symmetrical around its mean. In its standardized form, the normal distribution has been transformed to have a mean of 0 and a standard deviation of 1. This transformation is achieved by subtracting the mean of the distribution from each data point and dividing by the standard deviation. This standardization allows us to compare data from different normal distributions on a standardized scale.

The normal distribution has many properties that make it useful in statistical analysis. It is often used as a model for many real-world phenomena, such as the distribution of human height, IQ scores, and many others. The normal distribution is also useful because it is well understood and has many mathematical properties that make it easy to work with.

To know more about probability visit:

https://brainly.com/question/11234923

#SPJ11

Answer:

240

Step-by-step explanation

18/30 = 9/15

9/15 = 3/5

3/5 = 0.6

0.6 x 400 = 240

Ergo it is likely 240 students would choose pizza

Answer:

Step-by-step explanation:

100 sq cm

To find the expected value of sample or imperfect information, you can use the expected value of perfect information as a reference point and compare the expected values.

To find the expected value of a sample or imperfect information, you can use the concept of the expected value of perfect information.

The expected value of perfect information (EVPI) represents the maximum value a decision-maker would be willing to pay to obtain complete and perfect information before making a decision. It quantifies the value of eliminating all uncertainty and making the best decision possible.

To estimate the expected value of sample or imperfect information, you can compare the expected value of the decision without any additional information (prior to obtaining the sample) to the expected value of the decision with the sample or imperfect information.

The difference between these two expected values represents the potential gain or loss from obtaining the sample or imperfect information. This difference can give you an estimate of the value of the additional information and its impact on the decision-making process.

Learn more about expected value here:
brainly.com/question/28197299

#SPJ11

We then initialize the problem with an initial feasible solution and construct the dual problem. We apply the Dual Simplex Method to the dual problem until an optimal solution is obtained. Finally, we use the obtained dual solution to obtain the primal solution.

The given linear programming problem is a minimization problem with inequality constraints. We start by converting these inequality constraints into equations by introducing slack variables. The resulting standard form problem is:

Minimize z = 6x1 + 7x2 + 3x3 + 5x4

Subject to: 5x1 + 6x2 + 3x3 + 4x4 + x5 = 12

x2 - 5x3 - 6x4 + x6 = 10

2x1 + 5x2 + x3 + x4 + x7 = 8

x1, x2, x3, x4, x5, x6, x7 >= 0

We initialize the problem with the initial feasible solution x1 = x2 = x3 = x4 = 0, x5 = 12, x6 = 10, x7 = 8. We then construct the dual problem by swapping the roles of the variables and constraints. The dual problem is:

Maximize z' = 12y1 + 10y2 + 8y3

Subject to: 5y1 + y2 + 2y3 <= 6

6y1 - 5y2 + 5y3 <= 7

3y1 - 6y2 + y3 <= 3

4y1 - 6y2 + y3 <= 5

y1, y2, y3 >= 0

We apply the Dual Simplex Method to the dual problem using the initial dual feasible solution y1 = y2 = y3 = 0. We select the entering variable y1 since it has the most negative reduced cost. We then apply the ratio test to determine the leaving variable, which is y3. We pivot on the (2, 1) element of the tableau to obtain a new dual feasible solution. We repeat the process until an optimal solution is obtained, which is y1 = 1.4, y2 = 0, y3 = 0.4 with optimal value z' = 26.4.

Finally, we use the obtained dual solution to obtain the primal solution. The primal solution is x1 = 0, x2 = 1.4, x3 = 0.6, x4 = 0, with optimal value z = 14.2. Therefore, the optimal solution to the given linear programming problem is x1 = 0, x2 = 1.4, x3 = 0.6, x4 = 0, with optimal value z = 14.2.

Learn more about Simplex Method:

brainly.com/question/30970325

#SPJ11

The future value of depositing $1,000 every year for 20 years, with payments made at the beginning of each period, at an interest rate of 7% compounded yearly, is approximately $43,865.18.

To calculate the future value of a series of deposits, we can use the formula for the future value of an ordinary annuity:

FV = P * [(1 + r)^n - 1] / r

Where:

FV is the future value

P is the periodic payment

r is the interest rate per period

n is the number of periods

In this case, the periodic payment is $1,000, the interest rate is 7% (or 0.07), and the number of periods is 20.

Plugging these values into the formula, we get:

FV = 1000 * [(1 + 0.07)^20 - 1] / 0.07

  = 1000 * [1.07^20 - 1] / 0.07

  ≈ 1000 * [2.6532976 - 1] / 0.07

  ≈ 1000 * 1.6532976 / 0.07

  ≈ 43,865.18

Therefore, the future value of this series after 20 years would be approximately $43,865.18.

Learn more about compounded here: brainly.com/question/14117795

#SPJ11

A. SEM (Standard Error of the Mean) is used to gauge the accuracy of sample means as representing the true population mean.

The Standard Error of the Mean (SEM) is a statistical method used to estimate the variability or uncertainty of the sample mean in relation to the population mean. It measures how much the sample means varies from the true population mean.

The SEM provides a measure of the precision of the sample mean. A smaller SEM indicates a more accurate estimate of the population mean, while a larger SEM suggests greater variability and less precision.

Learn more about Standard Error of the Mean (SEM)

brainly.com/question/13846749

#SPJ11

Answer:

the 2nd option

Step-by-step explanation:

the second option is in standard form (y = ax^2 + bx + c), c gives us the y intercept

Using the congruent theorem,

a. ∠XBC will be equal to ∠AXY as the lines are parallel to each other for which the angles are corresponding to each other.

b. ∠BXC = 70°

Equal amounts of angles are referred to as congruent angles. As a result, congruent angles are those whose measures are the same. They can be found anywhere, including in isosceles triangles, equilateral triangles, and situations where a transversal joins two parallel lines.

Here in the question,

∠AXY = 55°

XY ║ BD

XB = XC

a.

So, from the figure:

∠XBC will be equal to ∠AXY as the lines are parallel to each other for which the angles are corresponding to each other.

So, ∠XBC = ∠AXY =55°

b.

Now,

In ΔXBC, XB = XC

So, ∠XBC = ∠XCB = 55°.

As per angles in a triangle,

∠XBC + ∠XCB + ∠BXC = 180°

⇒ ∠BXC = 180 - 55 - 55

⇒ ∠BXC = 70°

To know more about congruent angles, visit:

https://brainly.com/question/16448127

#SPJ9

The correct answer is $56,000.the total profit for Pinewood Furniture Company, considering only the production of 200 chairs and 400 tables

To determine the total profit for Pinewood Furniture Company, we need to calculate the profit generated from producing 200 chairs and 400 tables.

Each chair generates a profit of $80, and if 200 chairs are produced, the total profit from chairs would be:

200 chairs * $80/profit per chair = $16,000.

Similarly, each table generates a profit of $100, and if 400 tables are produced, the total profit from tables would be:

400 tables * $100/profit per table = $40,000.

Therefore, the total profit for Pinewood Furniture Company, considering only the production of 200 chairs and 400 tables, would be:

$16,000 (profit from chairs) + $40,000 (profit from tables) = $56,000.

Hence, the correct answer is $56,000.

Learn more about Macroeconomics

brainly.com/question/30268833

#SPJ11

Answer:

2.

2x+3y=45

x+y=16

3.

x+y=383

4x+6y=2034

4.

y=2x+11

x+y=53

5.

2x+5y=16

5x+2y=19

Step-by-step explanation:

Answer:

Um excuse me u answered my question without answering my question so here we r

Step-by-step explanation:

Answer: The answer is B. It is not a function because the domain(x) is repeating and if the x was not repeating it would have been a function :)

Step-by-step explanation:

answer: D.840 yards

Step-by-step explanation:

as to find volume of any 3 d shape we multiply l×b×h to find the volume

7×10×12=840

please mark as brainliest

The answer is e. none of the above/can’t be determined with info given.

Based on the information given, we have:

P(A) = 0.46

P(B) = 0.17

P(A U B) = 0.63

Note that P(A U B) represents the probability of either event A or event B occurring, or both.

If events A and B are mutually exclusive, it means they cannot occur at the same time. In other words, if event A occurs, event B cannot occur, and vice versa. In this case, the probability of both events occurring would be zero.

On the other hand, if events A and B are collectively exhaustive, it means that together they account for all possible outcomes. In other words, either event A or event B (or both) must occur, and there are no other possibilities.

Using these definitions, we can see that events A and B are neither mutually exclusive nor collectively exhaustive. This is because the probability of both events occurring (i.e., the intersection of A and B) is not zero, which means they are not mutually exclusive. Additionally, the probability of either A or B occurring (i.e., the union of A and B) is not equal to one, which means they are not collectively exhaustive.

Know more about probability here:

https://brainly.com/question/31828911

#SPJ11

Answer:

4cups of chocolate chips

Hope I helped

Step-by-step explanation:

Answer:

4

Step-by-step explanation:

2 cups times two recipes

2x2=4

Answer:

wouldnt the answer be 9.9

Step-by-step explanation:

12.1-2.2=9.9

Answer:

Step-by-step explanation:

The elevation of Tammy's house is 3 1/2 times the elevation of Winston’s house which is 12.1 and that would give us 42.35 and then subtract the 2pm ocean elevation which is 2.2 and that would leave us with the answer of 42.15. so no the answer is not 9.9

Solution

Given that cos θ= 3/5 and cot x < 0, then tanθ = ?

Using trigonometric function and angle

USING PYTHAGORAS therorem

Tanθ = opposite/adjacent

The correct option is option D) it has range of 22

What is the range of a dataset?

It the difference between the minimum and maximum value of the dataset.

We are given a dataset with a histogram and we are asked to find out which of the given options does not describe the data

We find the answer by eliminating the correct option

Our given dataset contains 10 points

Hence the median will be the average of 5th and 6th element

Here the 5th and 6th elements are 17

Hence the median of the dataset is 17

Similarly 17 is repeated 4 times in the dataset. i.e highest number of times

Hence 17 is the mode of the dataset

If you look clearly at the histogram from median it is symmetrical that is left side equal to the right side

But if you look at the range the minimum value is 13 and maximum value is 21

Hence the range of the function is 21-13=8

And not 22

Hence the correct option is option D)

To learn more about median please refer

https://brainly.com/question/26151333

#SPJ13

Answer:

The expression representing the total price of the truck including the sales tax is 1.07p

Step-by-step explanation:

The total price of the Truck can be calculated by adding the cost of the Truck to the sales tax of the Truck

From the question, the cost of the truck is $ p while the tax is 0.07p

So the total price of the truck will be;

p + 0.07p

= p( 1 + 0.07)

= p(1.07)

= 1.07p

Answer:it is C: 1.07p

Step-by-step explanation:

We do not have sufficient evidence to conclude that there is a significant difference in the average time spent on social media between genders.

H0: There is no significant difference in the average time spent on social media between genders.

HA: There is a significant difference in the average time spent on social media between genders.

We will use a two-sample t-test because we have two independent samples and want to compare the means of the two groups.

We will know test statistic and compare it to the critical value at a significance level of 0.05.

Sample 1 (Female):

Sample size (n1) = 34

Sample mean (x1) = 50.59

Sample standard deviation (s1) = 43.83

Sample 2 (Male):

Sample size (n2) = 16

Sample mean (x2) = 73.88

Sample standard deviation (s2) = 54.5

Degrees of freedom df:

\(= (s1^2/n1 + s2^2/n2)^2 / [(s1^2/n1)^2/(n1-1) + (s2^2/n2)^2/(n2-1)]\\= (43.83^2/34 + 54.5^2/16)^2 / [(43.83^2/34)^2/(34-1) + (54.5^2/16)^2/(16-1)]\\ = 24.48\)

Calculation of the test statistic:

\(t = (x1 - x2) / \sqrt{s1^2/n1 + s2^2/n2}\\t = (50.59 - 73.88) / \sqrt{24.48^2/34 + 54.5^2/16}\\t = -1.63\)

Using t-table, we find that the critical value (at a = 0.05, two-tailed) for this test is approximately ±2.028.

Since -1.63 does not exceed the critical value of ±2.028, we fail to reject the null hypothesis.

Read more about t-test

brainly.com/question/6589776

#SPJ4