Which of the following math statements contain variable(s)? Check
apply.
A. ? + 1 = 5
B. 6-6=0
C. 4 + 6 = 10
D. 11-x=9

Answers

Answer 1

Answer:

A, D

Step-by-step explanation:

A letter or a symbol that stands for a number is a variable.

In choice A, ? stands for a number.

In choice D, x stands for a number.

Choices B and C only have numbers, so there are no variables there.

Answer: A, D


Related Questions

which of the following is an example of categorical data? a. gender b. educational level c. hair color d. all of the above

Answers

All of the above options are examples of categorical data.

What is statistics?

Statistics is a branch of mathematics that deals with the collection, analysis, interpretation, presentation, and organization of numerical data. It involves the use of methods and techniques to gather, summarize, and draw conclusions from data.

Statistics plays a significant role in various fields, including business, economics, social sciences, medicine, engineering, and many others. It is used to make informed decisions, test hypotheses, and predict future trends based on past data.

Categorical data is data that can be grouped into categories or classes based on their characteristics or attributes. In this case, gender (male, female, non-binary), educational level (high school, bachelor's degree, master's degree, etc.), and hair color (blonde, brown, black, red, etc.) are all examples of categorical data.

Therefore, All of the above options are examples of categorical data.

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A manufacturer of banana chips would like to know whether its bag filling machine works correctly at the 429 gram setting. Is there sufficient evidence at the 0.01 level that the bags are underfilled or overfilled? Assume the population is normally distributed.
State the null and alternative hypotheses for the above scenario.

Answers

We are willing to reject the null hypothesis if the evidence is sufficiently strong at this level.

The null and alternative hypotheses for the scenario are:

Null hypothesis (H0): The bag filling machine works correctly at the gram setting, i.e., the population mean weight of the bags is[tex]429[/tex]  grams.

Alternative hypothesis (H1): The bag filling machine does not work correctly at the [tex]429[/tex] gram setting, i.e., the population mean weight of the [tex]429[/tex] bags is either less than or greater than  grams.

Mathematically, these can be expressed as:

H0: μ[tex]= 429[/tex]

H1: μ [tex]≠ 429[/tex]

where μ represents the population mean weight of the bags. The two-tailed alternative hypothesis (μ ≠ 429) indicates that we are testing for the possibility of the bags being underfilled or overfilled, and the significance level of 0.01 indicates that we are willing to reject the null hypothesis if the evidence is sufficiently strong at this level.

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A hobby store prices model train track using a proportional relationship between the length of track (in inches) and the cost in dollars.

If 6.4
inches of track costs $16
, what is the constant of proportionality?

Answers

The constant of proportionality is 2.5.

We can start by using the formula for a proportional relationship, which is:

y = kx

where y is the cost in dollars, x is the length of track in inches, and k is the constant of proportionality.

We know that when x = 6.4, y = 16. So we can substitute these values into the formula and solve for k:

16 = k * 6.4

Dividing both sides by 6.4, we get:

k = 16 / 6.4

Simplifying this fraction, we get:

k = 2.5

Hence, 2.5 is the constant of proportionality.

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Answer:

2.5

Step-by-step explanation:

convert 43/60 to a decimal and a percent

Answers

Answer: .  & %

Step-by-step explanation:

 
   43
/60 = 0.71666

whilewhilewhilewhile

43/60× 100

.71666×100

71%

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sketch the graph, and find the horizontal and vertical asymptotes of the reciprocal squared function that has been shifted left 3 units and down 4 units.

Answers

The horizontal asymptote is y = 0 and the vertical asymptotes are x = -1 and x = -5. The graph of g(x) can be sketched as given in the picture.

What are horizontal, vertical asymptotes?

Asymptotes are lines that a curve approaches but never touches. There are two types of asymptotes:

Horizontal asymptote: A horizontal asymptote is a horizontal line that a curve approaches as the value of x becomes very large or very small. In other words, if the curve approaches a specific y-value as x approaches infinity or negative infinity, then that y-value is the horizontal asymptote.

Vertical asymptote: A vertical asymptote is a vertical line that a curve approaches but never touches. A vertical asymptote occurs when the denominator of a function becomes zero and the numerator does not.

Here we have

The horizontal and vertical asymptotes of the reciprocal squared function that has been shifted left 3 units and down 4 units.

The reciprocal squared function is given by:

=> f(x) = 1/(x²)

To shift this function left 3 units and down 4 units, we need to modify the equation as follows:

=> g(x) = 1/((x+3)²) - 4

=> g(x) = 1/x² + 6x + 9 - 4

=> g(x) = 1/x²+6x+5

To find the horizontal asymptotes, consider what happens to the function as x approaches infinity and negative infinity.

As x approaches infinity, the x² term dominates the denominator, so we can approximate g(x) as 1/x².

Thus, the horizontal asymptote is y = 0.

As x approaches negative infinity, the x² term still dominates the denominator, and so g(x) also approaches 0.

Thus, the horizontal asymptote is also y = 0.

To find the vertical asymptotes, we need to look for values of x that make the denominator of g(x) equal to zero. We can factor the denominator as (x + 1)(x + 5),

so the vertical asymptotes occur at x = -1 and x = -5.

Therefore,

The horizontal asymptote is y = 0 and the vertical asymptotes are x = -1 and x = -5. The graph of g(x) can be sketched as given in the picture.

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1. A dog food company is interested in how much dog food a dog consumes based off of its weight. The company takes a random sample of dogs and finds that the best regression model to represent the data is as follows:Simple Linear Regression Results:Dependent Variable: Ounces of Food Consumed in a WeekIndependent Variable: WeightFood Consumed=−32.86+5.25×WeightSample Size: 500R2: 0.8129Estimate of error standard deviation: 7.8563121Suppose that a dog weighs 42.4 pounds, and typically eats 180 ounces of food per week. How many ounces of food would we predict the dog eats in a week, based on the least squares estimate? Provide your answer accurate to 1 digit past the decimal point.2. Suppose another dog weighs 24.7 pounds and consumes 70 ounces of food per week. What is the residual associate to this individual using the least squares estimate? Provide your answer accurate to 1 digit past the decimal point.

Answers

The residual associated with this individual is approximately -15.4 ounces, using the least squares estimate. This means that the actual amount of food consumed is about 15.4

We would predict that the dog would eat approximately 180.96 ounces of food in a week, based on the least squares estimate.  the residual associated with this individual is approximately -15.4 ounces, using the least squares estimate. This means that the actual amount of food consumed is about 15.4 ounces less than what would be predicted based on the regression model.

Using the given regression model, we can estimate the amount of food a dog weighing 42.4 pounds would consume in a week as:

Food Consumed = -32.86 + 5.25 × Weight

Food Consumed = -32.86 + 5.25 × 42.4

Food Consumed ≈ 180.96 ounces

Therefore, we would predict that the dog would eat approximately 180.96 ounces of food in a week, based on the least squares estimate.

To find the residual associated with a dog weighing 24.7 pounds and consuming 70 ounces of food per week, we first need to calculate the predicted value of food consumed based on the given regression model:

Food Consumed = -32.86 + 5.25 × Weight

Food Consumed = -32.86 + 5.25 × 24.7

Food Consumed ≈ 85.38 ounces

The residual is then calculated as the difference between the actual value of food consumed (70 ounces) and the predicted value (85.38 ounces):

Residual = Actual Value - Predicted Value

Residual = 70 - 85.38

Residual ≈ -15.4 ounces

Therefore, the residual associated with this individual is approximately -15.4 ounces, using the least squares estimate. This means that the actual amount of food consumed is about 15.4 ounces less than what would be predicted based on the regression model.

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Suppose f is a quadratic function that has roots at x = − 2 and x = 8 , and f ( 0 ) = 16. We will write a function formula for f. Sketch a garph of f based on information you are given

Answers

The equation of the quadratic equation f(x) can be written as:

f(x) = -(x + 2)(x - 8)

How to find the equation

The roots of the given quadratic equation are -2 and 8, the function can be written as follows:

f(x) = a(x + 2)(x - 8).

where a is constant.

then using the given information, which is that f(0) = 16 we can find the value of "a":

f(0) = a(0 + 2)(0- 8) = -16a

and we have that

-16a = 16,

solving for a gives

a = -1

Thus, the function f(x) can be written as:

f(x) = -(x + 2)(x -8).

The graph is attached

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To compare the effectiveness of two treatments, researchers conducted a well-designed experiment using a randomized block design in which the subjects were blocked by age-group (under 40 40 years and 40 40 years or older). What must be true about the randomized block design of the experiment?

Answers

In the context of your experiment comparing the effectiveness of two treatments using a randomized block design, the following must be true:

1. The subjects are divided into two blocks based on their age: under 40 years and 40 years or older.
2. Randomization is used within each block to assign subjects to one of the two treatments. This ensures that each treatment group within a block has a random mix of subjects, reducing potential biases.
3. The purpose of blocking by age is to control for any confounding variables or potential effects that age might have on the treatment outcomes. By blocking, researchers can more accurately measure the differences between the two treatments.
4. The experiment is well-designed, which means it should minimize potential sources of error, include sufficient sample size, and ensure proper randomization and data collection.
5. To analyze the results, researchers will compare the treatment outcomes within each age block and then combine the results to get an overall measure of the effectiveness of the two treatments.

By using a randomized block design in this experiment, researchers can control for age-related factors and obtain a more accurate comparison of the treatment effectiveness.

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A grain dealer sold to one customer 4 bushels of​ wheat, 6 of​ corn, and 8 of rye for ​$30. 20​; to​ another, 6 of​ wheat, 8 of​ corn, and 4 of rye for ​$29. 20​; and to a​ third, 8 of​ wheat, 4 of​ corn, and 6 of rye for ​$28. 80. What was the price per bushel for​ corn?

Answers

The price per bushel of corn is $0.36875, and this was found using a system of linear equations and substitution.

This problem involves finding the price per bushel of corn given the quantities sold and the total revenue earned from three transactions. Let c be the price per bushel of corn.

From the first transaction, we have the equation 6c + 4w + 8r = 30.20, where w and r are the prices per bushel of wheat and rye, respectively. Similarly, from the second and third transactions, we have the equations 8c + 6w + 4r = 29.20 and 4c + 8w + 6r = 28.80.

To solve for c, we can use a system of linear equations. Subtracting the second equation from the first and the third equation from the second, we get 2c - 2w + 4r = 1 and 4c + 2w - 2r = -0.4. Adding these two equations, we obtain 6c + 2r = 0.6, or c = (0.6 - 2r)/6.

Substituting this expression for c into any of the previous equations, we can solve for w and r. For example, using the first equation, we get w = (5.55 - 0.5r)/4.

Finally, substituting the values of w and r into any of the previous equations, we can solve for c. Using the second equation, we get r = (0.95 - 2c)/4, and substituting this into the third equation, we get c = 2.95/8, or c = $0.36875 per bushel of corn.

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numbers with bases larger than 10 need additional digits that are added starting with the _______

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Numbers with bases larger than 10 need additional digits that are added starting with the letter "A".

In base 16 (hexadecimal), for example, the first 10 digits represent the numbers 0-9, and the next 6 digits (A-F) are used to represent values 10-15. In base 36, the first 10 digits represent the numbers 0-9, and the next 26 digits (A-Z) are used to represent values 10-35.

When writing numbers in bases larger than 10, it is important to clarify which base is being used, since the same digit can represent different values in different bases. For example, the numeral "A3" could represent the number 163 in base 10, or the number 10*16 + 3 = 163 in base 16.

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(L5) A(n) _____ is an argument that begins with the assumption that a conclusion is false, then uses logical reasoning to show that the assumption leads to a contradiction.

Answers

The term that completes the blank in this question is "contradiction." A contradiction is a statement that is logically inconsistent with other statements, making it impossible for all of them to be true at the same time. In the context of arguments, a contradiction can be used to show that a certain assumption or conclusion is false.

The type of argument described in the question is known as a reductio ad absurdum, which translates to "reduction to absurdity" in Latin. In this type of argument, the arguer assumes the opposite of the conclusion they want to prove, and then shows that this assumption leads to a contradiction. This contradiction then proves that the original assumption was false, and therefore the original conclusion is true.

For example, if someone argued that all cats are black, someone could use reductio ad absurdum to show that this is not true. They would assume that all cats are black, and then show that this assumption leads to a contradiction. They might point out that some cats are white, which contradicts the original assumption. Therefore, the original assumption must be false, and the conclusion that all cats are black is also false.

Overall, reductio ad absurdum is a powerful tool in logical reasoning, allowing us to prove that certain assumptions or conclusions are false by demonstrating that they lead to logical contradictions.

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A cube is dilated by a factor of 3.5.

How many times larger is the volume of the resulting cube than the volume of the original cube?



Enter your answer as a decimal in the box.

Answers

Answer:

6

Step-by-step explanation:

2 multiples by 2 times 2. there is your answer big man please like it

Jenny walks to softball practice on Friday, She leaves her home and walks 10 blocks north. She then turns west and walks 4 more blocks to the softball field. How far diagonally is the softball field from Jenny’s home? If she takes the diagonal path home, how far does she walk in total to practice and home?

Answers

Answer:

We can use the Pythagorean theorem to calculate the distance diagonally from Jenny's home to the softball field.

The distance she walks north is 10 blocks, and the distance she walks west is 4 blocks. Using the Pythagorean theorem, the diagonal distance is:

√(10² + 4²) = √116 ≈ 10.77 blocks

To find the total distance she walks to practice and back home, we need to double the diagonal distance:

2 × 10.77 ≈ 21.54 blocks

Therefore, if Jenny takes the diagonal path home, she will walk approximately 21.54 blocks in total to practice and back home.

Step-by-step explanation:

Write -0. 18 repeating as a fraction in simplest form.

Answers

The simplest fraction form of the repeating decimal -0.18 is -18/99

Let's call the repeating decimal x. Then we can write:

x = -0.181818...

Multiplying both sides by 100 gives:

100x = -18.181818...

Now, we can subtract the first equation from the second to eliminate the repeating decimal:

100x - x = -18.181818... - (-0.181818...)

This simplifies to:

99x = -18

Dividing both sides by 99 gives:

x = -18/99

So, we have successfully converted the repeating decimal -0.181818... to a fraction, which is -18/99 in its simplest form.

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Ou put two yellow cubes, one red cube, one blue cube, and one green cube into a bag. You draw a cube, put it back, and draw another cube. What is the probability of getting one blue cube and one yellow cube?

Answers

The probability of getting one blue cube and one yellow cube is 2/25

How to find the probability of getting one blue cube and one yellow cube?

Probability is the likelihood of a desired event happening.

Since you draw a cube, put it back, and draw another cube. This is called probability with replacement.

Since we have two yellow cubes, one red cube, one blue cube, and one green cube into a bag.

Total cubes = 2 + 1 + 1 + 1 = 5

The probability for each cube:

P(yellow cubes) = 2/5

P(red cube) = 1/5

P(blue cube) = 1/5

P(green cube) = 1/5

Thus, the probability of getting one blue cube and one yellow cube will be:

P(one blue cube and one yellow cube) = 1/5 * 2/5 = 2/25

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Television High definition television (HDTV) gives consumers a wider viewing area, more like a film screen in a theater. A regular television with a 27-inch diagonal measurement has a screen 16.2 in. tall. An HDTV screen with the same 16.2-inch height would have a diagonal measuring 33 in. How many inches wider is the HDTV screen?

Answers

The HDTV screen is 7.2 inches wider than the regular TV screen.

Pythagorean theorem:

To find the width difference between the regular TV and the HDTV screen, we need to use the Pythagorean theorem, which states that in a right triangle, the square of the hypotenuse (the diagonal) is equal to the sum of the squares of the other two sides (the height and width).

Here we have

Regular television with a 27-inch diagonal measurement has a screen 16.2 in. tall.

An HDTV screen with the same 16.2-inch height would have a diagonal measuring 33 in.

Here the diagonal will divide the TV into two right-angle triangles,

So, use the Pythagorean theorem to find the width of both TVs

For the regular TV:

Using the Pythagorean theorem:

27² = 16.2²+ Width²

729 = 262.44 + Width²

Width² = 729 - 262.44

Width² = 466.56

Width = √(466.56)

Width = 21.6 in

So the regular TV has a width of 21.6 inches.

For the HDTV:

Using the Pythagorean theorem:

33² = 16.2²+ Width²

1089 = 262.44 + Width²

Width² = 1089 - 262.44

Width^2 = 826.56

Width = √(826.56)

Width = 28.8 in

So the HDTV has a width of 28.8 inches.

The difference in width between the two screens is:

=> 28.8 - 21.6 = 7.2 inches

Therefore,

The HDTV screen is 7.2 inches wider than the regular TV screen.

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The radius of a circle is 2 miles. What is the circle's area?

Answers

Answer:

4π square miles.

Step-by-step explanation:

The area of a circle is given by the formula A = πr², where A is the area and r is the radius.

Substituting r = 2 miles, we get:

A = π(2 miles)² = 4π square miles

Answer: 12.5664 Mi^2

Step-by-step explanation:

Circle area = π * r² = π * 4 [inch²] ≈ 12.566 [in²]

π ≈ 3.14159265 ≈ 3.14

d = r * 2 = 2 [inch] * 2 = 4 [inch]

Using The t Distribution Table, find the critical value(s) for the t test for a left-tailed test with n=27 and α=0.01. Enter the answers separated by a comma if needed.
Critical value(s)=

Answers

The critical value for this test is -2.485 for the t-test for a left-tailed test with n=27 and α=0.01.

The critical value(s) for the t-test for a left-tailed test with n=27 and α=0.01 can be found using a t-distribution table.

Using the table with 26 degrees of freedom (n-1) and an alpha level of 0.01, we find the value of t to be -2.485. Since this is a left-tailed test, the critical value is the negative of the t-value. Therefore, the critical value for this test is -2.485.

The critical value is important in hypothesis testing as it helps us determine the cutoff point beyond which we reject the null hypothesis. In a left-tailed test, the critical value is the point on the t-distribution that has an area of alpha (0.01 in this case) to its left. If the calculated t-statistic falls beyond this critical value, we reject the null hypothesis.

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which of the following correlation coefficients will produce the most diversification benefits? multiple choice a. -.6 b. -.9 c. 0 .d. 4

Answers

The correlation coefficient that will produce the most diversification benefits is option b. -.9.

A correlation coefficient of -0.9 indicates a strong negative correlation between two assets, which means that their prices move in opposite directions most of the time. This type of correlation provides the highest level of diversification benefits as it reduces the overall risk of the portfolio.

A correlation coefficient of -0.6 also provides diversification benefits, but to a lesser extent than -0.9. A correlation coefficient of 0 means there is no correlation between two assets, and a correlation coefficient of 4 is not possible as it is outside the range of possible correlation coefficients (-1 to +1).

Therefore, the correct answer is option b. -9.

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A manufacturer produces crankshafts for an automobile engine. The crankshafts wear after 100,000 miles (0.0001 inch) is of interest because it is likely to have an impact on warranty claims. A random sample of =15 shafts is tested and X=2.78. It is known that =0.9 and that wear is normally distributed.
(a) Test H0:=3 vs H1:≠3 using =0.05.
(b) What is the power of the test if =3.25 and when =3.75? How do they compare in light of the meaning of statistical power?
(c) What sample size would be required to detect a true mean of 3.85 if we wanted the power to be at least 0.9?

Answers

We would need a sample size of at least 26 to detect a true mean of 3.85 with a power of at least 0.9. We can calculate it in the following manner.

(a) To test the hypothesis H0: μ = 3 versus H1: μ ≠ 3, we can use a t-test with 14 degrees of freedom since n = 15. The test statistic is:

t = (X - μ) / (s / √n) = (2.78 - 3) / (0.9 / √15) = -1.58

Using a t-distribution table with 14 degrees of freedom and a significance level of 0.05, we find that the critical values are ±2.145. Since |-1.58| < 2.145, we fail to reject the null hypothesis at the 0.05 level of significance. There is not enough evidence to conclude that the mean wear of the crankshafts is different from 3 inches.

(b) To find the power of the test, we need to specify the alternative hypothesis and the significance level. Let's assume that we want to test H0: μ = 3 versus H1: μ ≠ 3 at the 0.05 level of significance.

When μ = 3.25, the test statistic is:

t = (X - μ) / (s / √n) = (2.78 - 3.25) / (0.9 / √15) = -2.43

Using a t-distribution table with 14 degrees of freedom and a significance level of 0.05, we find that the critical values are ±2.145. Since |-2.43| > 2.145, we reject the null hypothesis at the 0.05 level of significance. The power of the test is the probability of rejecting the null hypothesis when the true mean is 3.25. This can be calculated using the t-distribution with 14 degrees of freedom and the non-centrality parameter δ = (3.25 - 3) / (0.9 / √15) = 1.23:

power = 1 - tcdf(2.145, -2.145, 14, 1.23) = 0.53

When μ = 3.75, the test statistic is:

t = (X - μ) / (s / √n) = (2.78 - 3.75) / (0.9 / √15) = -4.53

Using a t-distribution table with 14 degrees of freedom and a significance level of 0.05, we find that the critical values are ±2.145. Since |-4.53| > 2.145, we reject the null hypothesis at the 0.05 level of significance. The power of the test is the probability of rejecting the null hypothesis when the true mean is 3.75. This can be calculated using the t-distribution with 14 degrees of freedom and the non-centrality parameter δ = (3.75 - 3) / (0.9 / √15) = 2.95:

power = 1 - tcdf(2.145, -2.145, 14, 2.95) = 0.92

The power of the test is higher when the true mean is further away from the null hypothesis mean. In this case, the power increases from 0.53 to 0.92 when the true mean changes from 3.25 to 3.75.

(c) To detect a true mean of 3.85 with a power of at least 0.9, we need to find the required sample size. We can use the formula for sample size calculation for a one-sample t-test:

n = (Zα/2 + Zβ)2 σ2 / (μ0 - μ1)2

where Zα/2 is the critical value of the standard normal distribution corresponding to the desired significance level, Zβ is the critical value of the standard normal distribution corresponding to the desired power, σ is the known population standard deviation, and μ0 and μ1 are the null and alternative hypotheses, respectively.

Plugging in the values, we get:

n = (1.645 + 1.282)2 (0.9)2 / (3 - 3.85)2 = 25.9

Rounding up to the nearest integer, we get the required sample size as 26. Therefore, we would need a sample size of at least 26 to detect a true mean of 3.85 with a power of at least 0.9.

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A college instructor wants to estimate with 99% certainty the mean math anxiety score for freshman enrolled in college algebra at PSU.What should she do?

Answers

She should report the estimated mean math anxiety score along with the confidence interval, which represents the range within which the true population mean is likely to fall with 99% certainty.

To estimate the mean math anxiety score for freshman enrolled in college algebra at PSU with 99% certainty, the college instructor should take a random sample of the freshman population enrolled in college algebra.

She should ensure that the sample size is large enough to meet the assumptions of the central limit theorem, which typically requires a sample size of at least 30. Once the sample is taken, she should calculate the sample mean and standard deviation of the math anxiety scores.

Next, she should use a confidence interval formula to determine the range within which the true mean math anxiety score for the entire population of freshman at PSU falls. This formula takes into account the sample mean, sample standard deviation, sample size, and level of confidence (99%).

Finally, she should report the estimated mean math anxiety score along with the confidence interval, which represents the range within which the true population mean is likely to fall with 99% certainty. This will provide useful information for understanding and addressing the math anxiety levels of freshman enrolled in college algebra at PSU.

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Plant A is 78 inches tall. Plant B is 5 feet 5 inches tall. Which plant is taller? How many inches taller?

Answers

de I've just isn't user isn't USNS Isabella Jackie keep oath oven order for the first time in a while back to the house and I will be there in about an hour or so to get a room for the first time in the morning and I will be there in about an it's di. dee,z

What portion of Loop of Henley is permeable to water?

Answers

It is the descending limb of the Loop of Henle that is permeable to water.

The Loop of Henle is a key component of the nephron in the kidney and plays a crucial role in the concentration of urine. It consists of a descending and ascending limb, and the permeability to water varies along its length.

The descending limb of the Loop of Henle is highly permeable to water, but not to ions. This allows for the reabsorption of water from the filtrate, which increases the concentration of solutes in the tubular fluid.

In contrast, the ascending limb is impermeable to water, but actively transports ions such as sodium and chloride out of the tubular fluid. This creates a concentration gradient that drives the reabsorption of water in the descending limb.

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This figure represents a piece of a structure that will be built out of sheet metal. The construction crew needs 3 of these pieces. How much sheet metal is needed to build all 3 pieces? Enter your answer in the box. ft² Right pentagonal prism. The height of the prism is 8 ft. The base has two pairs of parallel sides. The sides are consecutively labeled 5 ft, 3 ft, 5 ft, 2 ft and 7 ft. The parallel sides are those labeled 3 ft and 7 ft, and 5 ft and 2 ft.

Answers

The total amount of sheet metal needed for their construction is : 702 [tex]ft^2[/tex]

Total Surface area of Prism:

The total surface area of the prism is the sum of the areas of its 7 faces.

Now, WE have to find the lateral surface area, base area, and area of one.

According to the information from the question:

Firstly, To find the lateral surface area:

The width of each rectangular face is 8 ft. The total length of all of the rectangular faces is equal to the perimeter of the base:

=>  7 ft. +5 ft. +3 ft. +5 ft. + 2 ft. = 22 ft.

So, the rectangular area is :

A = LW = (8 ft.)(22 ft.) = 176 [tex]ft^2[/tex]

To find the Base area:

The area of each base is equivalent to the area of a 5 ft×7 ft rectangle with a 3 ft. × 4 ft. right triangle cut off one corner. The base area will be :

A = LW -1/2bh

A = (5 ft.)(7 ft.) - 1/2(3 ft.)(4 ft.) = 29 [tex]ft^2[/tex]

=> So the total surface area of one structure is :

 Lateral area + 2 × (area of one base)

= 176 [tex]ft^2[/tex] +2(29 [tex]ft^2[/tex]) = 234 [tex]ft^2[/tex]

The total amount of sheet metal needed for their construction is:

(234 [tex]ft^2[/tex]) × 3 = 702 [tex]ft^2[/tex] needed to build all 3 pieces

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To see the attachment.

Anthony has a gross monthly income of $4,500. He pays 17% in federal and state taxes, puts aside 11% of his income to pay off his credit card, and puts 5% of his income aside for savings. He is considering an apartment that will rent for $1,700 per month. Based on these expenses, can he afford the monthly payment?

Answers

Anthony may struggle to afford the rent of $1,700 per month and may want to consider a less expensive option or increase his income.

To determine if Anthony can afford the monthly rent of $1,700, we first need to calculate his net income after taxes and other expenses

Federal and state taxes: 17% of $4,500 = $765

Credit card payments: 11% of $4,500 = $495

Savings: 5% of $4,500 = $225

Total deductions = $765 + $495 + $225 = $1,485

Net income = Gross income - Total deductions = $4,500 - $1,485 = $3,015

Anthony's net income after taxes and other expenses is $3,015 per month. To determine if he can afford the rent of $1,700, we need to compare his rent expense to his available income

Rent: $1,700

Available income: $3,015

Anthony's rent expense is $1,700 per month, which is more than half of his available income. As a general rule, financial advisors recommend that housing expenses should not exceed 30% of a person's income.

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Alexa's dentist gave her a 24-gram tube of toothpaste after her appointment. He recommended Alexa brush with a pea-sized amount, or about 250 milligrams, of toothpaste twice a day. If Alexa follows her dentist's recommendation, how many days will the tube of toothpaste last?

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The tube of toothpaste will last Alexa 48 days if she uses a pea-sized amount, or about 250 milligrams, of toothpaste twice a day as recommended by her dentist.

Since Alexa is using 250 milligrams of toothpaste twice a day, the total amount of toothpaste she uses per day is:

250 mg/toothbrushing x 2 toothbrushings/day = 500 mg/day

To find out how many days the tube of toothpaste will last, we need to divide the total amount of toothpaste in the tube (24 grams) by the amount of toothpaste Alexa uses per day (500 milligrams). However, we need to make sure the units are the same, so we need to convert 24 grams to milligrams:

24 g = 24,000 mg

Now we can divide 24,000 mg by 500 mg/day:

24,000 mg ÷ 500 mg/day = 48 days

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which best explains or justifies step 4b? factoring a polynomial multiplication property of equality converting to a common denominator addition property of equality

Answers

In summary, step 4b is justified by using the addition property of equality and factoring the polynomial expression to identify a common factor that can be added to both sides of the equation.

Step 4b is a step in solving an equation, and it involves adding the same quantity to both sides of the equation in order to isolate the variable on one side. This step can be justified by using the addition property of equality, which states that if you add the same quantity to both sides of an equation, the equality is still maintained.

In this specific case, we are adding a polynomial expression to both sides of the equation. This can be done using the polynomial multiplication property of equality, which states that if you multiply both sides of an equation by the same polynomial, the equality is still maintained. However, since we are adding rather than multiplying, this property is not directly applicable.

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x = 59
1) Start by isolating the exponential expression on one side using PEMDAS backwards
4(x - 5)² + 15 = 115
4(x - 5)² = 100 (Subtraction)
(x - 5)² = 25 (Division)
2) Take the square root of both sides and solve for x
√(x - 5)² = ±√25
x - 5 = ±5 x = ±5 + 5 (Addition)
x = 0, 10

Answers

The solutions for the equation 4(x-5)² + 15 = 115 are x = 0 and x = 10.

We can solve the equation by isolating the exponential expression on one side using PEMDAS backwards, taking the square root of both sides, and solving for x. First, we subtract 15 from both sides to get 4(x-5)² = 100. Then, we divide both sides by 4 to get (x-5)² = 25. Taking the square root of both sides gives us x-5 = ±5, which we can simplify to x = 5±5. Finally, we get the solutions x=0 and x=10.

An exponential expression is a mathematical expression that involves a base raised to a power or exponent. The base is usually a constant number or variable, and the exponent represents the number of times the base is multiplied by itself.

For example, 2³ is an exponential expression, where the base is 2 and the exponent is 3. Exponential expressions are commonly used in mathematical functions, such as exponential growth and decay, and are an essential component in many areas of mathematics, including algebra, calculus, and statistics.

The equation given is 4(x-5)²+15=115 and the task is to solve for x. To do so, we need to isolate the exponential expression on one side of the equation using PEMDAS backwards. First, we subtract 15 from both sides, then divide by 4 to obtain (x-5)² = 25. Next, we take the square root of both sides and get x-5 = ±5. Finally, we add 5 to both sides to solve for x, giving us x=0 or x=10. Therefore, the solutions for the equation 4(x-5)²+15=115 are x=0 or x=10.

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The complete question is:

x = 59

1) Start by isolating the exponential expression on one side using PEMDAS backwards

4(x - 5)² + 15 = 115

4(x - 5)² = 100 (Subtraction)

(x - 5)² = 25 (Division)

2) Take the square root of both sides and solve for x

√(x - 5)² = ±√25

x - 5 = ±5

x = ±5 + 5 (Addition)

x = 0, 10

Can yall help me with this pleasseee

Answers

Based on the data, we can estimate that there are approximately 26 musical symbol cards in the deck.

Based on the data provided, out of 23 flashcards selected, 4 are about tempo & rhythm terms, 7 are about types of compositions, 3 are about musical symbols, 3 are about historical instruments, and 6 are about composers.

To estimate the total number of musical symbol cards in the deck, we can use proportions. We know that 23 cards were selected out of a total of 200, which represents approximately 11.5% of the deck.

We also know that 3 of the 23 cards were about musical symbols, which represents approximately 13% of the selected cards. Therefore, we can estimate that 13% of the deck is made up of musical symbol cards.

To find the estimated number of musical symbol cards in the deck, we can multiply the estimated proportion by the total number of cards in the deck:

0.13 x 200 = 26

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What is the domain and range of the following relation? Is it a function?{ (-1,2), (2, 51), (1, 3), (8, 22), (9, 51) }

Answers

Answer: To determine the domain and range of the given relation, we need to look at the set of all the x-coordinates (domain) and y-coordinates (range) of the ordered pairs in the relation.

Domain: The domain of the relation is the set of all x-coordinates. In this case, the x-coordinates are -1, 2, 1, 8, and 9.

Range: The range of the relation is the set of all y-coordinates. In this case, the y-coordinates are 2, 51, 3, 22, and 51.

To determine whether the relation is a function, we need to check whether each input (x-coordinate) has a unique output (y-coordinate). If there is any x-coordinate with multiple y-coordinates, then the relation is not a function.

In this case, we can see that there are two ordered pairs with the same x-coordinate of 2: (2, 51) and (-1, 2). Therefore, the relation is not a function.

Domain: {-1, 1, 2, 8, 9}

Range: {2, 3, 22, 51}

In Addition, It is not a function.

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