Pre-Algebra Writing Question (Image below) Please do everything that it says in the image most people don't do it, it's Part A and B

Pre-Algebra Writing Question (Image Below) Please Do Everything That It Says In The Image Most People

Answers

Answer 1

A. The width of the rectangle is 32 centimeters. and B. solving for the width, we get the answer of 32 cm.

What is rectangle?

A rectangle is a geometric shape that has four sides and four right angles (90 degrees) with opposite sides being parallel and equal in length.

A. Let's use the formula for the perimeter of a rectangle:

Perimeter = 2 × (Length + Width)

We are given the length of the rectangle, which is 26 cm, and the perimeter, which is 116 cm. We can substitute these values into the formula and solve for the width:

116 cm = 2 × (26 cm + Width)

Divide both sides by 2:

58 cm = 26 cm + Width

Subtract 26 cm from both sides:

32 cm = Width

Therefore, the width of the rectangle is 32 centimetres.

B. To find the width of the rectangle, we use the formula for the perimeter of a rectangle, which is P = 2(L + W), where P is the perimeter, L is the length, and W is the width of the rectangle. We substitute the given values into the formula and solve for the width. We are given the length of the rectangle, which is 26 cm, and the perimeter, which is 116 cm. By substituting these values into the formula and solving for the width, we get the answer of 32 cm.

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Related Questions

6.1 true or false: points that minimize a nonlinear function are inherently less accu- rately determined than points for which a non- linear function has a zero value.

Answers

The given statement, points that minimize a nonlinear function are inherently less accurately determined than points for which a nonlinear function has a zero value is FALSE.

What is a nonlinear function?

In mathematics, a nonlinear function is a function that is not linear, i.e. a function whose graph is not a straight line. Simplest non-linear functions are quadratic function, exponential function and logarithmic functions. Nonlinear functions do not follow the superposition principle, which is fundamental to linear systems, which states that if the input is scaled by any factor, then the output will also be scaled by that factor.

Points that minimize a nonlinear function are inherently less accurately determined than points for which a nonlinear function has a zero value. The above statement is false because the points that minimize a nonlinear function can be determined more accurately than the points where the nonlinear function has zero value.

Also, there is no such rule that the points that minimize a nonlinear function are less accurate than points for which a nonlinear function has a zero value.

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Which are correct representations of the inequality –3(2x – 5) < 5(2 – x)? Select two options. x < 5 –6x – 5 < 10 – x –6x + 15 < 10 – 5x A number line from negative 3 to 3 in increments of 1. An open circle is at 5 and a bold line starts at 5 and is pointing to the right. A number line from negative 3 to 3 in increments of 1. An open circle is at negative 5 and a bold line starts at negative 5 and is pointing to the left.

Answers

The correct representations of the inequality –3(2x – 5) < 5(2 – x) are:

-6x - 5 < 10 - x

-6x + 15 < 10 - 5x

Therefore, the first and second options are the correct representations.

For the number line, we first need to solve the inequality for x:

-3(2x - 5) < 5(2 - x)

-6x + 15 < 10 - 5x

-x < -5

x > 5

Using this solution, we can plot the open circle at 5 and the bold line pointing to the right on a number line from -3 to 3 in increments of 1. This matches the first option provided. The second option represents a number line with an open circle at -5 and a bold line pointing to the left, which does not correctly represent the solution to the inequality.

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Answers

Answer:

the total answer is 41.89 ft square

Step-by-step explanation:

i dont have it separately sorry

Janice would like to have $40,000 to help pay for college in 8 years. Currently, she has $1000. What interest rate, when compounded yearly, would help her reach her goal?

c. Janice's friend Sarah starts with $7800 and wants to have $18, 400 twenty years from now. What interest rate does she need (compounded yearly)?

b. If y represents the amount of money and x represents the number of years after today, find an equation that models Janice's financial situation. What interest rate does she need to earn?

a. What type of function would best model this situation? Explain how you know and write the general form of this function.

d. Is Janice's goal or Sarah's goal more realistic? Justify your response.

Answers

a. The situation can be modeled using exponential growth function since the amount of money is increasing at a constant rate over time. The general form of the function is: A = P(1 + r)^t, where A is the future value, P is the present value, r is the interest rate, and t is the time in years.

b. Using the given information, we can write the equation as:

40,000 = 1,000(1 + r)^8

Dividing both sides by 1,000, we get:

40 = (1 + r)^8

Taking the eighth root of both sides, we get:

1.047 ≈ 1 + r

r ≈ 0.047 or 4.7%

Therefore, Janice needs an interest rate of approximately 4.7% compounded yearly to reach her goal.

c. Using the same formula as above, we can write:

18,400 = 7,800(1 + r)^20

Dividing both sides by 7,800, we get:

2.359 ≈ (1 + r)^20

Taking the twentieth root of both sides, we get:

1.044 ≈ 1 + r

r ≈ 0.044 or 4.4%

Therefore, Sarah needs an interest rate of approximately 4.4% compounded yearly to reach her goal.

d. Janice's goal is less realistic since she would need to earn a higher interest rate in order to reach her goal. Additionally, starting with only $1,000 and expecting to have $40,000 in 8 years is a very ambitious goal, whereas Sarah's goal seems more achievable as she has a longer time horizon and a larger initial investment.

i need help pleaseeeeeeeeee

Answers

According the given question the slοpe is 3/4.

What is slοpe?

Calculated using the slοpe οf a line fοrmula, the ratiο οf "vertical change" tο "hοrizοntal change" between twο different lοcatiοns οn a line is determined. The difference between the line's y and x cοοrdinate changes is knοwn as the slοpe οf the line.Any twο distinct places alοng the line can be used tο determine the slοpe οf any line.

Here the accοrding to the table , let us take any twο coordinates are,

[tex](x_1,y_1)=(4,6) , (x_2,y_2)=(8,3)[/tex]

Nοw using slope formula then,

=> Slοpe m = [tex]\frac{y_2-y_1}{x_2-x_1}[/tex]

=> Slοpe m = [tex]\frac{6-3}{8-4}=\frac{3}{4}[/tex]

Hence the slοpe οf the linear function is 3/4.

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Ellie uses 27 yards of fabric for 48 doll dresses she uses that same amount for one dress how many yards of fabric does use for one

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Ellie uses approximately 0.5625 yards or 9/16 of a yard of fabric for one doll dress, which can be useful in calculating the total cost of fabric required for a certain number of doll dresses.

Given that Ellie uses 27 lengths of fabric for 48 doll dresses, we can calculate the amount of fabric she uses for one dress by dividing the total yards of fabric by the number of dresses.

Dividing 27 by 48, we get 0.5625 yards, or approximately 9/16 of a yard, for one doll dress. This means that each dress requires a little more than half a yard of fabric.

This information can be useful in calculating the cost of fabric required to make a certain number of doll dresses. If we know the cost of fabric per yard, we can multiply it by the number of yards required to determine the total cost of fabric. In this case, if the cost of fabric is $5 per yard, the cost of fabric for one doll dress would be approximately $2.81.

In conclusion, Ellie uses approximately 0.5625 yards or 9/16 of a yard of fabric for one doll dress.

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the amount of distilled water dispensed by a machine is normally distributed with mean 64 oz and standard deviation 0.78 oz. what container size c will ensure that overflow occurs only 0.5% of the time?

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A container size of at least 66.03 ounces will ensure that overflow occurs only 0.5% of the time.

To make sure overflow occurs only 0.5% of the time, we would have to find the container of size "c" such that the amount of distilled water dispensed by the machine does not exceed c with a probability of 0.995 (or 1-0.005).

Let X be the amount of distilled water dispensed by the machine. Then X ~ N(64, 0.78^2).

We want to find c such that P(X ≤ c) = 0.995.

We can standardize X to a standard normal distribution:

Z = (X - μ) / σ

Z = (c - 64) / 0.78

Then we can find the value of Z such that P(Z ≤ z) = 0.995, where z is the z-score associated with the 0.995 percentile of the standard normal distribution.

Using a standard normal distribution table or a calculator, we can find that z ≈ 2.576.

Therefore, 2.576 = (c - 64) / 0.78. Solving for c, we get:

c = 64 + 2.576 * 0.78 ≈ 66.03

So a container size of at least 66.03 ounces will ensure that overflow occurs only 0.5% of the time.

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on a roadway with eight 11 ft lanes (four in each direction), a horizontal curve is designed with a radius of 1176 ft, and a concrete wall is built at 70 ft from the center line, what is the sight distance for the driver?

Answers

The sight distance for the driver on the given road with the mentioned conditions is calculated to be approximately 860.8 ft.

To calculate the sight distance for the driver, we need to use the horizontal curve sight distance formula. The formula is:

SD = 2/3 × ((h + R)² / (2 × R - f))

Where:

SD = sight distance

h = height of driver's eye above the roadway surface (in feet)

R = radius of the curve (in feet)

f = distance from the driver's eye to the object or obstacle (in feet)

First, we need to determine the height of the driver's eye. A typical height for a driver's eye above the roadway surface is 3.5 feet. Therefore, we will assume that h = 3.5 ft.

Next, we need to determine f, which is the distance from the driver's eye to the concrete wall. Since the wall is located 70 feet from the center line of the roadway, we can determine f as follows:

f = (W / 2) + S

Where:

W = width of the roadway (in feet)

S = distance from the center line to the wall (in feet)

Substituting the given values, we get:

f = (8 × 11 / 2) + 70 = 114 ft

Now, we can plug in the values for h, R, and f into the sight distance formula:

SD = 2/3 × ((3.5 + 1176)² / (2 × 1176 - 114))

Simplifying the formula, we get:

SD ≈ 860.8 ft

Therefore, the sight distance for the driver on this roadway with a horizontal curve of radius 1176 ft and a concrete wall built at 70 ft from the center line is approximately 860.8 ft.

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Puppy fencing comes in sizes thatal 12 feet, 24 feet, and 30 feet in length. Which length would be the best fort pen? How much, if any, will have to B cut off to fit the pen?

Answers

If you want a square pen with each side measuring 6 feet:
- Perimeter = 6 feet x 4 = 24 feet
- The best length would be 24 feet, as it exactly matches the perimeter.
- No fencing needs to be cut off in this case, as the chosen fencing length fits the pen perfectly.

To determine the best length for the puppy pen, you will first need to know the dimensions of the desired pen. Assuming the pen is a square, follow these steps:
1. Measure the length and width of the area you want to fence.
2. Calculate the perimeter of the pen by adding the lengths of all four sides (since it's a square, the length and width are equal, so just multiply one side by 4).
3. Compare the perimeter to the available fencing lengths (12 feet, 24 feet, and 30 feet).
4. Choose the fencing length that is closest to, but not less than, the calculated perimeter.
5. Calculate the excess length by subtracting the perimeter from the chosen fencing length. This is the amount that needs to be cut off.

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Can a non-complex equation have 2 horizontal asymptotes? Excluding piecewise equations, o course. Also, what about 2 vertical asymptotes? And using a complex number as x could an equation pass the vertical asymptote? What about the horizontal one?

Answers

No, a non-complex equation cannot have two horizontal asymptotes. A horizontal asymptote is a line that a function approaches as the input variable increases or decreases without bounds.

Since a non-complex equation represents a single function, it cannot have more than one horizontal asymptote. A non-complex equation cannot have two vertical asymptotes. A vertical asymptote is a vertical line that a function approaches as the input variable approaches a certain value. Again, since a non-complex equation represents a single function, it cannot have more than one vertical asymptote. If a complex number is used as the input variable in an equation, the equation can pass through a vertical asymptote since the notion of "approaching" a point does not apply to complex numbers. However, the concept of a horizontal asymptote does not apply to complex numbers since there is no notion of "increasing" or "decreasing" in the complex plane.

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Find the surface area of a square pyramid with side length 6 ft and slant height 7 ft.

Answers

Answer:  42

Step-by-step explanation:

  6x7=42 ft

Please help me with this i cant figur out how to do it and it is due in 30 minutes CAN ONE OF YALL HELP ME WITH THIS IT IS EASY
What is the surface area of the triangular prism?


144 mm2

100 mm2

38 mm2

152 mm2


Answer___________

Answers

The calculated surface area of the figure is 152 square feet

Calculating the surface area of the figure

From the question, we have the following parameters that can be used in our computation:

The triangular prism

The surface  area is calculated as

SA = hp + 2B

Where

h = height

p = perimeter of base

B = base area


From the figure, we have

B = 1/2 * 6 * 4 = 12

p = 5 + 5 + 6 = 16

h = 8

So, we have

SA = 8 * 16 + 2 * 12

Evaluate

SA = 152

Hence, the surface area is 152 square feet

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which of the following statements are true? the resample can contain serial numbers that are not in the original sample. the original sample can contain serial numbers that are not in the resample. because the sample size is small, the histogram of the resample might look very different from the histogram of the original sample. the resample has either zero, one, or more than one copy of each serial number. the original sample has exactly one copy of each serial number for every german plane. the resample has exactly the same sample size as the original sample.

Answers

The true statements about the sample are a, c, d and e.

Serial codes in the resample may differ from those in the initial sample. The histogram of the resample may vary significantly from the histogram of the initial sample due to the small sample size. The number of copies of each serial number in the resample can be zero, one, or more. Furthermore, each serial number for every German aircraft is present in the initial sample precisely once.

Using resampling methods like bootstrapping or permutation tests, a new resample is created by arbitrarily selecting some of the initial sample. Therefore, depending on the precise resampling technique employed, the sample amount of the resample may be the same as the initial sample or it may be smaller or bigger.

Complete Question:

which of the following statements are true?

a. the resample can contain serial numbers that are not in the original sample.

b. the original sample can contain serial numbers that are not in the resample.

c. because the sample size is small, the histogram of the resample might look very different from the histogram of the original sample.

d. the resample has either zero, one, or more than one copy of each serial number.

e. the original sample has exactly one copy of each serial number for every German plane.

f. the resample has exactly the same sample size as the original sample.

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Using the substitution method, find the solution to this system of equations.
-2x+y=4
-2x+2y=7

Answers

Answer:

The solution to the system of equations is (-1/2, 3).

Step-by-step explanation:

To solve this system of equations using substitution method, we first need to solve one of the equations for one of the variables in terms of the other variable. Let's solve the first equation for y:

-2x + y = 4

y = 2x + 4

Now we can substitute 2x + 4 for y in the second equation:

-2x + 2y = 7

-2x + 2(2x + 4) = 7

Simplifying the equation:

-2x + 4x + 8 = 7

2x = -1

x = -1/2

Now we can use this value of x to find the value of y:

y = 2x + 4

y = 2(-1/2) + 4

y = 3

which statements are reasons why survey results might not help accurately predict actual results from the population?

Answers

Even if the sample is representative and the survey questions are well-crafted, there is a possibility that the findings will differ from those of the actual population due to sampling error.

Which are the statement why survey results might not help accurately predict actual results?

Sampling bias: The survey sample may not be representative of the community, resulting in an imbalance between the representation of some groups in the sample. As a result, there may be inaccuracies in the findings because the sample may not fairly represent the population's diversity. There are a number of factors why survey results might not be a reliable indicator of what the population will actually do. The following claims may help to clarify this:

Non-response bias: A biassed sample may result if some members of the sample decide not to take part in the poll. If the non-response rate is high among specific groups, such as minority groups or low-income households, this may be a particular issue.

Social preference bias: Respondents may be influenced to provide answers that make them appear more desirable.Instead of being fully honest, I'll be polite. As a result, socially acceptable behaviour may be overreported while socially unacceptable behaviour may be underreported.

topic wording: How a topic is worded can have an impact on the responses it receives. It's possible that ambiguous or deceptive questions don't accurately represent the respondent's true viewpoint.

Response options: How respondents react to a survey can also be influenced by the response options that are offered. Respondents might feel under pressure to select a response that doesn't accurately represent their opinions, for instance, if the choices are few or don't include a "neutral" option.

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std study: a 2008 cdc study estimated that 26% of young women between the ages of 14 and 19 in the u.s. were infected with at least one of the most common sexually transmitted diseases (human papillomavirus [hpv]), chlamydia, herpes simplex virus, and trichomoniasis). is the percentage higher in your community? suppose that we plan to select a random sample of 100 young women in your community. if we use the national figure of 26%, we estimate that the standard error is about 0.04 for results from random samples of 100 young women. when we select a random sample of 100 young women in your community, we find that 20% are infected with at least one of the most common stds. which gives the best interpretation of the 95% confidence interval to estimate the percentage of young women in your community who are infected with at least one of the most common stds?

Answers

Be 95% confident that the true percentage of young women infected with at least one STDs in your community is between 12% and 28% based on the random sample of 100 young women in your community.

The national estimate for the proportion of young women in the United States who are infected with at least one of the most prevalent sexually transmitted diseases is 26% based on the information provided. The study also predicts that the standard error for findings from 100 young women's random sample will be 0.04 percent.

It is discovered that 20% of 100 young women in your community who were chosen at random are infected with at least one of the most prevalent STDs. A 95% confidence interval can be used to calculate the proportion of young women in your community who have at least one of the most frequent STDs.

If the same sample is obtained multiple times, the true value will, in 95% of cases, fall within the computed interval, according to a 95% confidence interval. The range of 12% to 28% is the predicted 95% confidence interval for the proportion of young women in your town who have at least one of the most prevalent STDs.

We therefore have a 95% confidence level that the true percentage of young women infected with at least one of the most prevalent STDs in your community is between 12% and 28% based on the sample of 100 young women in your community. This indicates that there is a chance that the proportion could be either higher or lower than the 26% national estimate.

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davis & theo hang pictures using their nails. Davis has a 3/4-inch nail. Theo has a 3/8-inch nail. How much longer is Davis's nail than Theo

Answers

What's an example of a common denominator?

The denominators of fractions that are the same are known as common denominators. Think about the following instances: 1/2 + 1/2 = 1 and 3/4 + 1/4 = 1 Since the fractions' denominators are the same in both instances, it is simple to calculate the solution.

According to the given information :

Davi's nail is 3/4 inch long, and Theo's nail is 3/8 inch long. To find how much longer Davis's nail is than Theo's, we need to subtract the length of Theo's nail from the length of Davis's nail:

3/4 inch - 3/8 inch

To subtract these fractions, we need to find a common denominator. The smallest common denominator for 4 and 8 is 8, so we need to convert the fractions:

3/4 inch = 6/8 inch

3/8 inch = 3/8 inch

Now we can subtract:

6/8 inch - 3/8 inch = 3/8 inch

Therefore, Davis's nail is 3/8 inch longer than Theo's nail.

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DeAndre’s older sister saved the same amount of money each month for `4` months.



If she has saved `\$536` altogether, how much money did she save each month?

Answers

Answer:

$134 per month

Step-by- step explanation:

Simply divide 536 by 4, and you get 134.

$8.40 is what percent of $28?

Percent Proportion-
Percent Equation-

Answers

Answer:

10%

Step-by-step explanation:

Percent proportion:

$28 - 100%

$8,40 - x%

Cross-multiply to find x:

[tex]x = \frac{8.40 \times 100\%}{28} = \frac{840}{84} = 10 \: \%[/tex]

Answer  30%

Step-by-step explanation:

To find what percentage $8.40 is of $28, we can use the following proportion:

part/whole = percent/100

Let x be the percentage we are trying to find, then we can write:

8.40/28 = x/100

To solve for x, we can cross-multiply:

28x = 8.40 * 100

Dividing both sides by 28, we get:

x = (8.40 * 100) / 28 = 30

Therefore, $8.40 is 30% of $28.

For problems 8 and 9, find the length of the missing side of each right triangle. Round your
answers to the nearest tenth, if necessary. (2 points each)

Answers

Answer:

8. c ≈ 7,2 cm

9. b ≈ 6,7 in

Step-by-step explanation:

Use the Pythagorean theorem for each of these problems:

8.

[tex] {c}^{2} = {6}^{2} + {4}^{2} = 36 + 16 = 52[/tex]

[tex]c > 0[/tex]

[tex]c = \sqrt{52} ≈7.2[/tex]

.

9.

[tex] {b}^{2} = {7}^{2} - {2}^{2} = 49 - 4 = 45[/tex]

[tex]b > 0[/tex]

[tex]b = \sqrt{45} ≈6.7[/tex]

Given â–³rst ~ â–³rqp. triangle p q r. side p q is 8 centimeters and side p r is 12 centimeters. triangle s r t. side s t is x centimeters and side r t is 18 centimeters. what is the value of x?

Answers

The required simplified value of x in the △RQP (triangle RQP) is given as x = 12 centimeters.

Similar triangles:

Two triangles are similar if their corresponding sides have the same ratio and if the corresponding pairs of angles are equal. Two or more figures having the same shape but different sizes are called similar figures. Consider a hula hoop and a bicycle wheel, both objects are similar in shape because they have the same shape. Similar triangles are those triangles that have similar properties, i.e. angles and proportionality of sides.

Here,

△RST ~ △RQP

So, the Property of similar triangle states that the ratio of the corresponding side of the triangle is equal.

PQ/ST = PR/RT

From the given data n the question,

8/x = 12 / 18

⇒ x = 8 × 18 / 12

⇒ x = 12

Thus, the required simplified value of x in the △RQP is given as x = 12.

Complete Question:

Given △RST ~ △QRP. Triangle P Q R. Side P Q is 8 centimeters and side P R is 12 centimeters. Triangle S R T. Side S T is x centimeters and side R T is 18 centimeters. What is the value of x?

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A sportscaster predicted that the local high school baseball team has a 75% chance of winning tonight. Select all of the values that represent the probability of the team not winning.

Answers

the values that represent the probability of the team not winning.

b) 0.25

d) 25%

e) 3/4

f) 1/4

These values represent the probability of the team not winning, which is the complement of the probability of winning (75%).

b) 0.25 is the decimal representation of the probability of not winning, which is 1-0.75.      

d) 25% is the percentage representation of the probability of not winning, which is also 100%-75%.

e) 3/4 is the fraction representation of the probability of winning, so 1-3/4 gives the probability of not winning.

f) 1/4 is the fraction representation of the probability of not winning, which is the complement of the probability of winning (3/4).

These are the options that represent the probability of the team not winning.

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A sportscaster predicted that the local high school baseball team has a 75% chance of winning tonight. Select all of the values that represent the probability of the team not winning.

a)0.75 b)25% c)0.25d) 75%e)3/4f)1/4

the city of raleigh has 10600 registered voters. there are two candidates for city council in an upcoming election: brown and feliz. the day before the election, a telephone poll of 350 randomly selected registered voters was conducted. 135 said they'd vote for brown, 191 said they'd vote for feliz, and 24 were undecided. the target population for this survey is:

Answers

The target population for this survey is the registered voters in the city of Raleigh who are eligible to vote in the upcoming city council election.

The target population for a survey refers to the specific group of people that the survey is intended to represent or provide information about. In this case, the survey was conducted to gather information about the voting preferences of registered voters in the city of Raleigh for the upcoming city council election. Therefore, the target population for this survey would be the registered voters in the city of Raleigh who are eligible to vote in this election.

It's important to note that the target population is not the same as the sample population. The sample population refers to the group of people who actually participated in the survey, while the target population refers to the larger group of people that the sample population is intended to represent. In this case, the sample population was the 350 randomly selected registered voters who participated in the telephone poll.

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Dorothy bought an energy drink for $2.34 and a bag of chips for $1.82
She paid with a $50 bill. How much change should Dorothy have
received?

Answers

Dorothy should have received $45.84 in change.

What is the equivalent expression?

Equivalent expressions are expressions that perform the same function despite their appearance. If two algebraic expressions are equivalent, they have the same value when we use the same variable value.

To find out how much change Dorothy should have received, we need to first calculate the total cost of the energy drink and the bag of chips:

Total cost = Cost of energy drink + Cost of the bag of chips

Total cost = $2.34 + $1.82

Total cost = $4.16

Next, we need to subtract the total cost from the amount paid by Dorothy to get the change:

Change = Amount paid - Total cost

Change = $50 - $4.16

Change = $45.84

Therefore, Dorothy should have received $45.84 in change.

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a hospital receives 1/5 of its flu vaccine shipments from company x and the remainder of its shipments from other companies. each shipment contains a very large number of vaccine vials. for company x's shipments, 8% of the vials are ineffective. for every other company, 3% of the vials are ineffective. the hospital tests 30 randomly selected vials from a shipment and finds that one vial is ineffective. what is the probability the shipment came from company x?

Answers

The probability that the shipment came from company X, given one ineffective vial was found, is 0.4 or 40%.

To find the probability ,we will use the Bayes' theorem.

Determine the prior probabilities.

P(X) = Probability that the shipment is from company X = 1/5

P(Y) = Probability that the shipment is from other companies = 1 - 1/5 = 4/5

Determine the likelihood probabilities.

P(I|X) = Probability of finding an ineffective vial given the shipment is from company X = 8%

P(I|Y) = Probability of finding an ineffective vial given the shipment is from other companies = 3%

Determine the probability of finding an ineffective vial.

P(I) = P(I|X) × P(X) + P(I|Y) × P(Y) = (8% × 1/5) + (3% × 4/5)

     = 0.08 × 0.2 + 0.03 × 0.8 = 0.016 + 0.024

     = 0.04

Use Bayes' theorem to find the probability that the shipment is from company X given an ineffective vial.

P(X|I) = (P(I|X) × P(X)) / P(I)

        = (0.08 × 0.2) / 0.04 = 0.016 / 0.04

        = 0.4

The probability that the shipment came from company X, given one ineffective vial was found, is 0.4 or 40%.

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If the coefficient of x4 in the expansion of (2-3px) (4x4+ 5x³-x) is 38, find the value of p.​

Answers

The answer of the given question based on expression is  the value of p that satisfies the given condition is -2.

What is Binomial theorem?

The binomial theorem is a fundamental concept in algebra that provides a formula for expanding expressions of the form (a + b)ⁿ, where n is a non-negative integer and a and b are real numbers. The formula is as follows:

(a + b)ⁿ = C(n, 0)aⁿ b⁰ + C(n, 1)a⁽ⁿ⁻¹⁾ b¹ + ... + C(n, r)a⁽ⁿ⁻r⁾ b^r + ... + C(n, n)a⁰bⁿ

The binomial theorem states that the nth power of a binomial can be expanded as the sum of the products of each term in the binomial raised to a power and the corresponding binomial coefficient. The binomial coefficient represents the number of ways of choosing r objects from a set of n objects, and is often denoted by "n choose r" or written as a combination symbol, (nCr).

We can use the binomial theorem to expand the given expression as:

(2-3px) (4x⁴ + 5x₃ - x) = 8x⁴ + 10x³ - 2x - 12px⁵ - 15px⁴ + 3px²

To find the coefficient of x⁴ in this expansion, we need to look at the terms that contain x⁴. There are two such terms: 8x⁴ and -15px⁴. Therefore, the coefficient of x⁴ is 8 - 15p.

We are given that this coefficient is 38, so we can set up the equation:

8 - 15p = 38

Solving for p, we get:

-15p = 30

p = -2

Therefore, the value of p that satisfies the given condition is -2.

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csc u cot u divided by sec u

Answers

cos² u / sin² u = cos² u / (1 - cos² u) is the simplified expression for (csc u cot u) / sec u in terms of cos u. We can calculate it in the following manner.

We can simplify the expression (csc u cot u) / sec u using trigonometric identities.

Recall that:

csc u = 1 / sin u

cot u = cos u / sin u

sec u = 1 / cos u

Therefore, we have:

(csc u cot u) / sec u

= (1/sin u * cos u / sin u) / (1 / cos u) (substituting the identities)

= (cos u / (sin u)²) * cos u (simplifying the fractions)

= cos² u / sin² u (simplifying further)

Recall that:

sin² u + cos² u = 1

Therefore, we can substitute sin² u by 1 - cos² u:

cos² u / sin² u = cos² u / (1 - cos² u)

This is the simplified expression for (csc u cot u) / sec u in terms of cos u.

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Help on this question

Answers

The missing entries are (a) $686, (b) $635, (c) $1035, (d) $1010, (e) $938.88 and (f) $447.37.

What is Debit Card?

A debit card is one that a person owns, and when they use it to make a purchase, the money is instantly withdrawn from or added to their account.

A table listing Gino's debit card purchases is provided.

He has made a $778.19 starting deposit.

The disparity between the old balance and the payment will be the new balance in the account.

He spent $92.19 on the bat.

a = $778.19 - 92.19 = $686

He bought gas for $51.00.

b = $686 - $51 = $635

He deposited $400.

c = $635 + $400 = $1035

He paid $25 for gas.

d = $1035 - $25 = $1010

Dinner at Spooner's on the shore cost him $71.12.

e = $1010 - $71.12 = $938.88

He spent $491.51 on books for the entire term.

f = $938.88 - $491.51 = $447.37

The missing records are thus discovered.

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2x10x10x10x10x+4x10x10x10x+8x10x10

Answers

I think there might be a typo in the expression you provided. However, assuming you meant to write:

2x10x10x10x10 + 4x10x10x10x + 8x10x10

We can simplify this expression by performing the multiplications and additions in the correct order. Using the order of operations (PEMDAS), we first perform the multiplications from left to right, and then add the resulting terms.

Multiplying the terms in the first expression, we get:

2 x 10 x 10 x 10 x 10 = 200,000

Multiplying the terms in the second expression, we get:

4 x 10 x 10 x 10 = 40,000

Multiplying the terms in the third expression, we get:

8 x 10 x 10 = 800

Adding the three resulting terms, we get:

200,000 + 40,000 + 800 = 240,800

Therefore, the simplified value of the expression 2x10x10x10x10x+4x10x10x10x+8x10x10 is 240,800.

living at home: according to a 2011 report from the u.s. census, 59% of young men (age 18-24) are living at home with their parents. suppose that we plan to select a random sample of 100 young men from your community. if we use the national figure of 59%, we estimate that the standard error is about 0.05 for results from random samples of 100 young men from your community. when we select a random sample of 100 young men from your community, we find that 50% are living at home. which gives the best interpretation of the 95% confidence interval to estimate the percentage of young men in your community who are living at home?

Answers

The best interpretation of the 95% confidence interval to estimate the percentage of young men in your community who are living at home is 0.40 and 0.60.What is confidence interval?

A confidence interval is a range of values in which an estimated population parameter lies. The value of this parameter is inferred from sample data with a certain level of confidence. To calculate the confidence interval, the margin of error and the sample mean are combined.

A confidence interval expresses the uncertainty around the estimated parameter of a population. Confidence intervals are useful for determining the reliability of an estimate. In statistical inference, confidence intervals can be used to quantify the level of certainty regarding an estimated population parameter.

What is a 95% confidence interval?A 95% confidence interval implies that if we run the same survey many times, calculating the 95% confidence interval for each survey, 95% of those intervals will contain the true value of the population parameter. It is the most common confidence level used in surveys and statistical studies.

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