Leyla needs to hire a plumber to fix a few things around her house. She will need plumbing service for a total of 3 hours. Which plumbing service should she go with to save money? How much will she save? Justify your answer.

Answer:

you have the answer correct actually

Step-by-step explanation:

Step-by-step explanation:

Area750 cm² = 750 × 10^-4 m²

pressure = F/A

= 61 /(750×10^-4)

= 61 × 10⁴/750

= 0.081 × 10⁴

= 810 N/ m²

Answer:

813N/m^2

Step-by-step explanation:

Pressure is defined as the amount of force applied to an area. There are 100cm in a single meter, therefore:

\(750cm^2=\sqrt{750} cm\frac{1}{100} \frac{m}{cm} =\frac{\sqrt{750} }{100} m=0.075m^2\)

Pressure formula is:

\(P=Force/Area=61N/0.075m^2=813N/m^2\)

Step-by-step explanation:

a) 6400

b) 4800

c) 32000

hope this answer helps you dear!

A researcher's results should be considered fraudulent if data were changed in order to support the hypothesis. This is a serious ethical violation and goes against the scientific method. Overall, it is important for researchers to adhere to ethical standards and maintain the integrity of their research.

Explanation:

A researcher's results should be considered fraudulent if data were changed in order to support the hypothesis. This is a serious ethical violation and goes against the scientific method. Additionally, if animals were used while conducting experiments, the researcher should have followed ethical guidelines and obtained proper approval and care for the animals. If a survey was used to collect data, the researcher should have ensured the survey was properly designed and administered to avoid any biases or errors. Finally, if participants were not debriefed after completion of the study, this could be seen as unethical and potentially harmful to their well-being. Overall, it is important for researchers to adhere to ethical standards and maintain the integrity of their research.

The scientific method requires researchers to conduct experiments in a transparent and objective manner. This means that the researcher should design experiments to test hypotheses, collect data systematically, and analyze data objectively. Any manipulation of data to support a hypothesis undermines the scientific method and is considered unethical. Researchers who intentionally manipulate data can be considered fraudulent and may face disciplinary action.

If animals were used in the experiment, the researcher should have followed ethical guidelines and obtained proper approval and care for the animals. Ethical guidelines ensure that animals are treated humanely, minimize their pain and discomfort, and maximize their welfare. Researchers who violate these guidelines can be considered fraudulent and may face disciplinary action.

If a survey was used to collect data, the researcher should have ensured that the survey was properly designed and administered to avoid any biases or errors. Surveys can be susceptible to various sources of error, including sampling errors, measurement errors, and non-response bias. Researchers who fail to address these sources of error can produce biased or invalid results, which can be considered fraudulent.

Finally, if participants were not debriefed after completion of the study, this could be seen as unethical and potentially harmful to their well-being. Debriefing allows participants to understand the purpose of the study, ask questions, and voice any concerns they may have. Participants who are not debriefed may feel deceived or harmed by the study, which can damage their trust in research and researchers.

In summary, researchers must adhere to ethical standards and maintain the integrity of their research. This includes avoiding data manipulation, following ethical guidelines for animal welfare, ensuring that surveys are properly designed and administered, and debriefing participants after completion of the study. Failure to do so can result in fraudulent research and harm to participants, animals, and the scientific community as a whole.

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Answer:

b x=3

Step-by-step explanation:

Answer:

a. y=x^2

Step-by-step explanation:

desmos graphing calculator

\(\sqrt{6}\cdot \sqrt{6}\cdot \sqrt{6}\implies \sqrt{(6)(6)(6)}\implies \sqrt{6^2(6)}\implies {\LARGE \begin{array}{llll} 6\sqrt{6} \end{array}}\)

Answer:

m=1/2 b =6

Step-by-step explanation:

m is the the gradient ( as in how much that line slant), so just use the formula

y2 - y1

------------

X2 - x1

For b, that the y-intercept,

Once u found m

Just choose any one of the coordinate they gave u (4,8) or(-6,3)

It will give u the same answers

Let's say u chose (4,8)

Theredore x = 4, y =8

y=mx + b

8= 1/2 x 4 + b

b= 6

The other one would give u the same answer

Answer: FALSE

Step-by-step explanation:

a rectangle does not have all equal parts

1. For the triple integral ∫∫∫ f(x, y, z) dV with f(x, y, z) = x and Σ being the part of the plane x + 4y + z = 10 in the first octant, the limits of integration are 0 ≤ x ≤ 10, 0 ≤ y ≤ (10 - x)/4, and 0 ≤ z ≤ 10 - x - 4y.

2. For the triple integral ∫∫∫ f(x, y, z) dV with f(x, y, z) = y² and Σ being the part of the plane z = x for 0 ≤ x ≤ 2 and 0 ≤ y ≤ 4, the limits of integration are 0 ≤ x ≤ 2, 0 ≤ y ≤ 4, and 0 ≤ z ≤ x.

1. To evaluate ∫∫∫ f(x, y, z) dV, where f(x, y, z) = x and Σ is the part of the plane x + 4y + z = 10 in the first octant:

We need to find the limits of integration for x, y, and z within the given region Σ. In the first octant, the region is bounded by the planes x = 0, y = 0, and z = 0. Additionally, the plane x + 4y + z = 10 intersects the first octant, giving us the limits: 0 ≤ x ≤ 10, 0 ≤ y ≤ (10 - x)/4, and 0 ≤ z ≤ 10 - x - 4y. Integrating f(x, y, z) = x over these limits will yield the desired result.

2. For ∫∫∫ f(x, y, z) dV, where f(x, y, z) = y² and Σ is the part of the plane z = x for 0 ≤ x ≤ 2 and 0 ≤ y ≤ 4:

The given region Σ lies between the planes z = 0 and z = x. To evaluate the triple integral, we need to determine the limits of integration for x, y, and z. In this case, the limits are: 0 ≤ x ≤ 2, 0 ≤ y ≤ 4, and 0 ≤ z ≤ x. Integrating f(x, y, z) = y² over these limits will give us the final result.

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We have proved that Angle BCD is equal to angle BAD plus angle ABC plus angle ADC, as required.

To prove that angle BCD is equal to angle BAD plus angle ABC plus angle ADC, we can use the following steps:

Step 1: Join points A and C with a line segment. Let's label the point where AC intersects with line segment BD as point E.

Step 2: Since line segment AC is drawn, we can consider triangle ABC and triangle ADC separately.

Step 3: In triangle ABC, we have angle B + angle ABC + angle BCA = 180 degrees (due to the sum of angles in a triangle).

Step 4: In triangle ADC, we have angle D + angle ADC + angle CDA = 180 degrees.

Step 5: From steps 3 and 4, we can deduce that angle B + angle ABC + angle BCA + angle D + angle ADC + angle CDA = 360 degrees (by adding the equations from steps 3 and 4).

Step 6: Consider quadrilateral ABED. The sum of angles in a quadrilateral is 360 degrees.

Step 7: In quadrilateral ABED, we have angle BAD + angle ABC + angle BCD + angle CDA = 360 degrees.

Step 8: Comparing steps 5 and 7, we can conclude that angle B + angle BCD + angle D = angle BAD + angle ABC + angle ADC.

Step 9: Rearranging step 8, we get angle BCD = angle BAD + angle ABC + angle ADC.

Therefore, we have proved that angle BCD is equal to angle BAD plus angle ABC plus angle ADC, as required.

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Given: Quadrilateral \(\displaystyle\sf ABCD\)

To prove: \(\displaystyle\sf \angle BCD = \angle BAD + \angle ABC + \angle ADC\)

Proof:

1. Draw segment \(\displaystyle\sf AC\) and extend it to point \(\displaystyle\sf E\).

2. Consider triangle \(\displaystyle\sf ACD\) and triangle \(\displaystyle\sf BCE\).

3. In triangle \(\displaystyle\sf ACD\):

4. In triangle \(\displaystyle\sf BCE\):

5. Since \(\displaystyle\sf \angle BCE\) and \(\displaystyle\sf \angle BCD\) are corresponding angles formed by transversal \(\displaystyle\sf BE\):

6. Combining the equations from steps 3 and 4:

Therefore, we have proven that in quadrilateral \(\displaystyle\sf ABCD\), \(\displaystyle\sf \angle BCD = \angle BAD + \angle ABC + \angle ADC\).

\(\huge{\mathfrak{\colorbox{black}{\textcolor{lime}{I\:hope\:this\:helps\:!\:\:}}}}\)

♥️ \(\large{\underline{\textcolor{red}{\mathcal{SUMIT\:\:ROY\:\:(:\:\:}}}}\)

The number of hands that contain exactly 3 kings when 6 cards are randomly chosen are :

69,184

In a standard deck of playing cards, there are 52 cards, including 4 kings. To determine how many hands contain exactly 3 kings when 6 cards are randomly chosen, we'll use combinations.

First, we need to choose 3 kings from the 4 available kings:
C(4,3) = 4! / (3! * (4-3)!) = 4

Next, we need to choose the remaining 3 cards from the 48 cards that are not kings:
C(48,3) = 48! / (3! * (48-3)!) = 17,296

Now, multiply these two combinations together to find the total number of hands with exactly 3 kings:
4 * 17,296 = 69,184

So, there are 69,184 hands that contain exactly 3 kings when 6 cards are randomly chosen from a standard deck of playing cards.

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The required monthly payment for the student loan is $316.70.

To calculate the required monthly payments for a student loan, we can use the formula for monthly loan payments:

M = P * (r * (1 + r)^n) / ((1 + r)^n - 1),

where M is the monthly payment, P is the principal loan amount, r is the monthly interest rate, and n is the total number of monthly payments.

(a) Let's calculate the required monthly payments for a student loan of $50,000 with an annual percentage rate (APR) of 6% for 40 years.

First, we need to convert the annual interest rate to a monthly interest rate. The monthly interest rate can be found by dividing the annual interest rate by 12 months and converting it to a decimal:

r = 6% / 12 / 100 = 0.005.

Next, we need to determine the total number of monthly payments. Since there are 40 years in total, the number of monthly payments is:

n = 40 years * 12 months/year = 480 months.

Now, substituting the given values into the formula, we get:

M = 50000 * (0.005 * (1 + 0.005)^480) / ((1 + 0.005)^480 - 1).

Using a calculator to evaluate the expression, we find that the required monthly payment is approximately $316.70.

Therefore, the required monthly payment for the student loan is $316.70.

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Answer:

1

Step-by-step explanation:

Answer:

\(n = 65m\)

Number of minutes is 80 minutes

Step-by-step explanation:

Given

The attached table

Calculating the number of copies the machine can make in a minute

Represent number of minutes with m and number of copies with n

First, we need to calculate the ratio of m to n

\(Ratio = \frac{n}{m}\)

When m = 5; n = 325

\(Ratio = \frac{325}{5}\)

\(Ratio = 65\)

When m = 10; n = 650

\(Ratio = \frac{650}{10}\)

\(Ratio = 65\)

When m = 15; n = 975

\(Ratio = \frac{975}{15}\)

\(Ratio = 65\)

When we continue for other values of m and n, the ratio remains the same;

So; we make use of \(Ratio = \frac{n}{m}\) to determine the relationship between m and n

Substitute 65 for Ratio

\(65 = \frac{n}{m}\)

Multiply both sides by m

\(m * 65 = \frac{n}{m} * m\)

\(65m = n\)

\(n = 65m\)

This implies that, you have to multiply the number of minutes by 65 to get the number of copies

Calculating the number of minutes to print 5200 copies;

In this case;

Ratio = 65 and n = 5200

So;

\(Ratio = \frac{n}{m}\) becomes

\(65 = \frac{5200}{m}\)

Multiply both sides by m

\(65 * m = \frac{5200}{m} * m\)

\(65 * m = 5200\)

Divide both sides by 65

\(\frac{65 * m}{65} = \frac{5200}{65}\)

\(m = \frac{5200}{65}\)

\(m = 80\)

Hence; number of minutes is 80 minutes

Answer:

(7a2b+1)^2

Step-by-step explanation:

Please find attached photograph for your answer. The answer is (7a^2b+1)^2

The area under the standard normal curve to the left of z = 2.06 is approximately 0.9803.

The normal distribution function, also known as the Gaussian distribution or bell curve, is a probability distribution that is symmetric, bell-shaped, and continuous. It is defined by two parameters: the mean (μ) and the standard deviation (σ).

The normal distribution is widely used in statistics and probability theory due to its many desirable properties and its applicability to various natural phenomena. It serves as a fundamental distribution for many statistical methods, hypothesis testing, confidence intervals, and modeling real-world phenomena.

To find the area under the standard normal curve to the left of z = 2.06, you can use a standard normal distribution table or a calculator with a normal distribution function. The standard normal distribution is a normal distribution with a mean of 0 and a standard deviation of 1.

Using a standard normal distribution table, the area to the left of z = 2.06 can be found by looking up the corresponding value in the table. However, since the standard normal distribution table typically provides values for z-scores up to 3.49, we can approximate the area using the available values.

The closest value in the standard normal distribution table to 2.06 is 2.05. The corresponding area to the left of z = 2.05 is 0.9798. This means that approximately 97.98% of the area under the standard normal curve lies to the left of z = 2.05.

Since z = 2.06 is slightly larger than 2.05, the area to the left of z = 2.06 will be slightly larger than 0.9798.

Therefore, rounding the answer to four decimal places, the area under the standard normal curve to the left of z = 2.06 is approximately 0.9803.

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Answer:

Hence the positive numbers are 246, and 41

(246, 41)

Step-by-step explanation:

From the question,

Let the first positve number be \(x\)

and the other number be \(y\)

Hence,

\(x = 6y\) ....... (1)

Also,

That is,

\(x - y =205\) ........(2).

To solve for the two unknowns, substitute the value of \(x\) in equation (1) into equation (2).

Since,

\(x = 6y\)

Then

\(x - y =205\) becomes

\((6y) - y =205\\\)

Then,

\(6y - y = 205\\5y = 205\\\)

Divide both sides by 5

\(\frac{5y}{5} = \frac{205}{5} \\ y = 41\\\)

∴ the value of \(y\) is 41

Now, substitute the value of y into equation (1) to find \(x\)

Then,

\(x = 6y\) becomes

\(x = 6(41)\\x = 246\\\)

∴ the value of \(x\) is 246

Hence the positive numbers are 246, and 41

(246, 41)

Answer:

C. HOPE THIS HELPED

Step-by-step explanation:

Answer:

All of them form a right triangle.

Step-by-step explanation:

Khan

Solution :

Here, we are interested to study if the treatments have any effect on going tumor or not. Actually, this is model is an ANOVA one way layout with a treatment 'drug'.

In this kind of model or ANOVA model, we take the negative statement as our null hypothesis i.e.,

\($H_0:$\) There is no difference in the distribution of tumors states across the three  statements.

Therefore, alternative hypothesis would be :

\($H_a:$\) There is a difference in the distribution of tumor states across the three treatments.

So the correct option is (B).

Since there are no lines in one point geometry, none of the incidence axioms are satisfied because all of them need multiple points and lines.

Along with addition, subtraction, and division, multiplication is one of the four arithmetic operations. Multiplication in math refers to regularly adding groups of the same size. The formula for multiplication is multiplicand multiplier Equals product. Specifically, multiplicand: First number (factor). divider: Second number (factor). After multiplying the multiplicand and the multiplier, the result is known as the product. Multiple additions are made while adding numerals. as in 5 times 4 Equals 5 + 5 + 5 + 5 = 20. I multiplied 5 by 4 times. Multiplication is frequently referred to as "doubling" because of this.

Choosing two out of four is a combination issue since the order is irrelevant (no indication concerning order is given in the problem). A sample of A, B is equivalent to a sample of B, A if the population of 4 is A, B, C, and D.

There are 4C2 = 6 potential samples.

For such a tiny population, you may also list all potential samples as "A, B," "A, C," "A, D," "B, C," "B, D," and "C, D."

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the range in this set of data is 25 inches. To find the range of snowfall amounts, we need to look at the line plot and identify the highest and lowest amounts of snowfall that were recorded.

The range in a set of data is the difference between the maximum and minimum values in the set.

To find the range of snowfall amounts, we need to look at the line plot and identify the highest and lowest amounts of snowfall that were recorded.

Let's say that the highest amount recorded was 30 inches and the lowest amount recorded was 5 inches. Then the range would be:

range = highest amount - lowest amount

range = 30 - 5

range = 25

Therefore, the range in this set of data is 25 inches.

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the probability of transitioning from state 1 to state 2 after the first transition is:

P(X(t) enters state 2 after the first transition | X(0) = 1) = 1 / 3

To write the system of ordinary differential equations (ODEs) for the transition probabilities Pᵢⱼ(t) of the given continuous-time Markov chain, we need to consider the rate at which the system transitions between different states.

Let Pᵢⱼ(t) represent the probability that the Markov chain is in state j at time t, given that it started in state i at time 0.

The ODEs for the transition probabilities can be written as follows:

dP₁₂(t)/dt = q₁₂ * P₁(t) - q₂₁ * P₂(t)

dP₁₃(t)/dt = q₁₃ * P₁(t) - q₃₁ * P₃(t)

dP₂₁(t)/dt = q₂₁ * P₂(t) - q₁₂ * P₁(t)

dP₂₃(t)/dt = q₂₃ * P₂(t) - q₃₂ * P₃(t)

dP₃₁(t)/dt = q₃₁ * P₃(t) - q₁₃ * P₁(t)

dP₃₂(t)/dt = q₃₂ * P₃(t) - q₂₃ * P₂(t)

where P₁(t), P₂(t), and P₃(t) represent the probabilities of being in states 1, 2, and 3 at time t, respectively.

Now, let's consider the second part of the question: Suppose that the initial state is 1. We want to find the probability that after the first transition, the process X(t) enters state 2.

To calculate this probability, we need to find the transition rate from state 1 to state 2 (q₁₂) and normalize it by the total rate of leaving state 1.

The total rate of leaving state 1 can be calculated as the sum of the rates to transition from state 1 to other states:

total_rate = q₁₂ + q₁₃

Therefore, the probability of transitioning from state 1 to state 2 after the first transition can be calculated as:

P(X(t) enters state 2 after the first transition | X(0) = 1) = q₁₂ / total_rate

In this case, the transition rate q₁₂ is 1, and the total rate q₁₂ + q₁₃ is 1 + 2 = 3.

Therefore, the probability of transitioning from state 1 to state 2 after the first transition is:

P(X(t) enters state 2 after the first transition | X(0) = 1) = 1 / 3

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The sample standard deviation is approximately 0.83.

Sample size \(($n$)\) = 36

Population mean \(($\mu$)\) = 50

Population standard deviation \(($\sigma$)\) = 5

The sample standard deviation, denoted as \($s$\) can be estimated using the formula:

\(\[ s = \sqrt{\frac{\sum_{i=1}^{n}(x_i - \bar{x})^2}{n-1}} \]\)

where:

\($x_i$\) represents the individual data points in the sample

\($\bar{x}$\) is the sample mean

In this case, since we don't have individual data points, we can use the population standard deviation as an estimate for the sample standard deviation when the sample size is relatively large (as in this case \($n = 36$\)). This approximation is known as the standard error of the mean.

Therefore, the sample standard deviation can be approximated as:

\(\[ s \approx \frac{\sigma}{\sqrt{n}} \]\)

Substituting the given values:

\(\[ s \approx \frac{5}{\sqrt{36}} = \frac{5}{6} \] = 0.83\)

Hence, the sample standard deviation is approximately 0.83.

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Answer: $10

Step-by-step explanation:

Sue has $10 more than Paul which means she has $20. Who is speaking has $16 more than Sue ($16 more than $20) which means they has $36.

Adding all of their money, $10, $20, and $36, equals $66

The number of hours taken by the other pump to fill it by itself will be 9.13 hours.

Algebra is the study of abstract symbols, while logic is the manipulation of all those ideas.

The acronym PEMDAS stands for Parenthesis, Exponent, Multiplication, Division, Addition, and Subtraction. This approach is used to answer the problem correctly and completely.

The pool is being filled by two pumps. If one person can complete it in 30 hours by themselves, and two people can fill it in 7 hours.

Then the number of hours taken by the other pump to fill it by itself will be given as,

1 / x + 1 / 30 = 1 / 7

1 / x = 1 / 7 - 1 / 30

1 / x = 23/210

x = 9.13 hours

The number of hours taken by the other pump to fill it by itself will be 9.13 hours.

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Answer:

length of each section is 15/6 = 2 1/2

Step-by-step explanation:

Answer:

2.5 feet

Step-by-step explanation:

All you have to do is take 15 and divide it by 6 and you will get 2.5

hope that helps.