One pipe fills a storage pool in 15 hours. A second pipe fills the same pool in 5 hours. When a third pipe is added and all three are used to fill the​ pool, it takes only 3 hours. Find how long it takes the third pipe to do the job.

Answer:

x=nq+nr

Step-by-step explanation:

Let's solve for x.

x/n=q+r

Step 1: Multiply both sides by n.

x=nq+nr

Answer:

x=nq+nr

Feldman investigated how the rate of bar pressing by rats was affected by the type of injection they received, with two levels (saline and drug).

a. The dependent variable in this study is the rate of bar pressing by rats.

b. The independent variable in this study is the type of injection administered to the rats (saline-injection condition vs. drug-injection condition).

c. The independent variable has two levels: saline-injection condition and drug-injection condition.

d. A controlled extraneous variable in this study could be the environment in which the rats were tested. Since only one Skinner box was used and the same assistant handled all the animals, it suggests that the environment and handling conditions were kept constant to minimize their potential influence on the dependent variable.

a. Dependent variable: Rate of bar pressing by rats.

b. Independent variable: Type of injection administered.

c. Levels of the independent variable: Saline-injection condition and drug-injection condition.

d. Controlled extraneous variable: Environment and handling conditions.

Feldman investigated how the rate of bar pressing by rats was affected by the type of injection they received, with two levels (saline and drug). The study controlled for extraneous variables such as the environment and handling conditions.

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Answer:

13 square centimeters.

Step-by-step explanation:

There are 13 squares making up the shape

Answer:

Bottom(equation 3)=No solution

Middle(equation 2)= Infinite solutions

Top(equation 1)=1 solution

Step-by-step explanation:

Brainly pls I hope this helps

After 3 years, all's accounts will have approximately $1302.84.

The interest earned on All's investment after 3 years is $102.84.

We have,

(a)

The formula for the future value of a CD with monthly compounding.

FV = P(1 + r/12)^(12n)

where:

P = the principal amount (initial investment)

r = the annual interest rate (as a decimal)

n = the number of years

In this case,

All invest $1200, the interest rate is 1.27% compounded monthly, and the investment is for 3 years.

Plugging these values into the formula, we get:

FV = 1200(1 + 0.0127/12)^(12*3) ≈ $1302.84

(b)

To find the amount of interest earned, we subtract the initial investment from the future value:

Interest = FV - P

= $1302.84 - $1200

= $102.84

Thus,

After 3 years, all's accounts will have approximately $1302.84.

The interest earned on All's investment after 3 years is $102.84.

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Answer:

Step-by-step explanation:

Answer: The correct unit rate = 2 pound per quart.

Her error instead dividing of that she multiplied both fraction.

Step-by-step explanation:

Given: Jessie said the rate \(\dfrac12\) pound / \(\dfrac14\) quart can be written as the unit rate \(\dfrac18\) pound per quart.

The rate \(\dfrac12\) pound / \(\dfrac14\) quart = \(\dfrac{\dfrac{1}{2}}{\dfrac14} =\dfrac12\times\dfrac41=2\ \ \ \ \ \ [ \ \dfrac{\dfrac{a}{b}}{\dfrac{c}{d}}=\dfrac{a}{b}\times\dfrac{d}{c}\ ]\)

The correct unit rate = 2 pound per quart.

Her error instead dividing of that she multiplied both fraction.

Answer:

81 pencils is the answer

The value of 6! is 720.

The number of ways the two people can be chosen from the group of six is 30 ways.

The number of ways the group can be chosen is 20 ways.

The number of ways the six people can be placed in a line for a photo is calculated as;

\(= 6!\\\\= 6 \times 5 \times 4 \times 3 \times 2 \times 1\\\\= 720 \ ways\)

The number of ways the two people can be chosen from the group of six is calculated;

\(= 6P_2\\\\= \frac{6!}{(6-2)! } \\\\= \frac{6!}{4!} \\\\= \frac{6\times 5 \times 4!}{4!}\\\\= 6\times 5 \\\\= 30 \ ways\)

The number of ways the group can be chosen is calculated as;

\(= 6C_3\\\\= \frac{6!}{(6-3)! \times 3!} \\\\= \frac{6!}{3! \times 3!} \\\\=20 \ ways\)

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Answer:

The answer is 20

Step-by-step explanation:

In 609638400 ways eight men and five women can stand in a line so that no two women stand next to each other.

An arrangement of items in a specific order is referred to as a permutation. Here, the components of sets are organized in a linear or sequential manner. The permutation of the set A=1,6 is 2, for instance, 1,6, and 6,1. There is no alternative way to organize the components of set A, as you can see.

In contrast to combination, where the order of the parts is irrelevant, permutation calls for a specific arrangement of the elements in many ways.

We genuinely wonder how the timetables of trains, buses, and airlines are set up in accordance with the convenience of the general population. Of course, the permutation is quite useful in planning the departure and arrival timetables for these.

How to solve?

For 8 men in a line: 8! = 40320  

In order to separate 2 women, we have to choose 5 out of 9

C(9,5) = 9! / 5!4! = 126

Random place 5 women in the 5 chosen places: 5! = 120

Total ways= 40320 * 126 * 120 = 609638400

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I have 2 answers in mind

Answer #1:

\(\frac{y}{z}\)

Step-by-step explanation:

quotient means the answer to 2 things being divided so the quotient of y and z would be \(\frac{y}{z}\) because there is no numerical value.

Answer #2:

1

Step-by-step explanation:

Usually, when a letter is left by itself in an equation it usually has an invisible one in front of it. so when dividing y by z it would equal 1/1 which is equal to one.

Hope this helps :)

The sample distribution is a collection of the parameters of all possible samples of a particular size taken from a particular population. The correct answer is option E.

A sampling distribution refers to a probability distribution of a statistic which comes from selecting random samples of a given population. Also known as a finite-sample distribution, it represents the distribution of frequencies on how spread apart various outcomes will be for a specific population.

As sample sizes increase, the sampling distributions approach a normal distribution. With infinite numbers of successive random samples, the mean of the sampling distribution is equal to the population mean (µ). The mean of the sampling distribution of a sample proportion is np, the sample size times the probability of success for each trial (or observation).

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95% confidence interval : 30713 persons to 32433 persons.

The confidence interval is the mean of your estimate plus and minus the change in that estimate. This is the range of values ​​within which, with a certain level of confidence, you would expect your estimate to fall if you retest. In statistics, confidence levels are another way of describing probabilities.

According to the Question:

n = 100

x = 31,578

σ = 4413

class interval = 95% = 0.95

To construct a 95% confidence interval, we use the formula:

                          x ± z(σ/ √n)

α = 1 - CL = 1 - 0.95 =0.05

From the z score, Z(0.05) = Z (0.05/2) = Z 0.0025

Confidence Interval = X± 8 = X - 8= X+8

= (31578-865.34, 31578+ 865.34)

= (php 30713, php 32443)

Therefore, At 95% confidence interval There are 30713 person 32443 person.

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The coordinates of the middle point M is found as  (-7,0) of the line segment AB.

For the given question;

The two coordinates of the points are given ;

A( -4,4) = (x₁, y₁)

B (-10,-4) = (x₂, y₂)

The middle point M of this line segment is found as;

M(x, y) = (x₁ + x₂)/2 , (y₁ + y₂)/2

Put the values in the formula;

M(x, y) = (-4 - 10)/2 , (4 - 4)/2

M(x, y) = (-14)/2 , 0

M(x, y) = (-7,0)

Thus, the coordinates of the middle point M is found as  (-7,0).

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Answer:

For 3x + 2y = 6 , the x-intercept is 2 and the y-intercept is 3.

Answer: b

Step-by-step explanation:b

The value of x to the nearest hundredth is 9.04.

The correct option is C.

One of the six fundamental functions in trigonometry is the tangent function. As stated, Tan A = Opposite Side/Adjacent Side is the Tangent Formula. Tangent may be modeled using sine and cosine as follows: Tan A = Sin A / Cos A.

Given:

A triangle JHP is given in the diagram.

To find the value of x:

Applying tangent identity,

tan(37°) = 12/x

Apply cross multiplication,

we get,

x = 12tan(37°)

x = 9.042

x = 9.04 to the nearest hundredth.

Therefore, the value of x is 9.04.

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Answer:

about 23% decrease

Step-by-step explanation:

26-20=6

6 divided by 26 = 0.230

0.230 x 100 = 23

Answer:

24

Step-by-step explanation:

first work out the difference (decrease) between the two numbers you are comparing. Next, divide the decrease by the original number and multiply the answer by 100 to get the answer

Answer:

18

Step-by-step explanation:

The median of a set of data is the value that separates the lower and upper halves of the data. To find the median, the data must be arranged in numerical order.

The data, arranged in numerical order, is:

5, 5, 6, 7, 8, 9, 10, 10, 12, 14, 15, 17, 18, 18, 18, 20

Since the number of data points is an odd number (17), the median is simply the middle value, which is:

18

So the correct answer is A) 18.

Answer: C

Step-by-step explanation:

To find the median, arrange the numbers in sequential order.

5, 5, 6, 7, 8, 9, 10, 10, 12, 14, 15, 17, 18, 18, 18, 20

When there are an odd number of data in the set, choose the middle number in the set. For example, see the following data set.

2, 4, 6, 8, 9

The middle number in the data set is 6, so it is the median.

When there is an even number of data in the set, choose the middle two numbers, add them together, and then divide them by 2.

There are 16 numbers in this data set. We need to find the two middle numbers in the set.

5, 5, 6, 7, 8, 9, 10, 10, 12, 14, 15, 17, 18, 18, 18, 20

10 and 12 are the two middle numbers in the set.

10 + 12 = 22

22/2 = 11

Median = 11

A nurse should empty a Hemovac wound suction device when it is half full to ensure proper functioning and prevent discomfort or injury to the patient due to the device becoming too heavy.

The rationale for a nurse to empty a Hemovac wound suction device when it is half full is to ensure the device is functioning correctly and to prevent it from becoming too heavy and potentially causing discomfort or injury to the patient.

When a Hemovac wound suction device is half full, it may start to lose suction, which can result in less efficient drainage of fluid from the wound site. By emptying the device, the nurse can ensure that the device is functioning correctly and that the suction pressure is maintained.

Additionally, allowing the device to become too full can make it heavy and uncomfortable for the patient, potentially causing discomfort or injury to the wound site. Therefore, emptying the device when it is half full can help prevent these complications and ensure that the patient remains comfortable throughout the healing process.

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The cost of the dinner without tax or tip is  $22.              

Given,

The sales tax on meals = 10%

Tip she leaved before sales tax is added = 15%

The total amount for dinner = $27.50

We have to find the cost of dinner without adding tax or tip;

Let cost of meals be x.

Then,

She pays 10% of x as a sales tax

So that brings the total up to 100% + 10% = 110%

Before paying, she pays 15% on x as her tip. The tax does not touch the tip.

So that brings the total up to 100% + 10% + 15% = 125% of this is based on x, the cost of the meal.

So 125% of x = 27.50                        

125/100 * x = 27.50                          

125/100 * 100/125x = 100/125 * 27.50

x = 100/125 * 27.50                    

x = 2750 / 125 = 22

That is, the cost of the dinner without tax or tip is  $22.              

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Answer:

length =  4 width = 4 height = 10

Step-by-step explanation:

8x4x5 = 160

4x4x10 = 160

Organizational culture is defined as the common beliefs, values, attitudes, customs, behaviors, and traditions that characterize a specific organization and determine the manner in which it functions. Organizational culture is set by the manager.

In a corporate or business environment, organizational culture can influence the daily operations of employees. It is the responsibility of managers to create a positive culture that emphasizes teamwork, respect, integrity, and accountability. The manager is an essential individual responsible for establishing and maintaining the organization's culture, which will ultimately define the employee's attitudes, behaviors, and productivity levels. He or she sets the tone for the workplace by creating an environment that fosters collaboration, innovation, and success. Employees need to feel connected to their workplace and colleagues to be motivated to do their best work. If a manager promotes a culture of fear, competition, or dishonesty, employees may become unmotivated or unproductive. An effective manager understands the importance of creating a positive workplace culture and works hard to establish and maintain it. Managers can establish a positive culture by encouraging open communication, providing regular feedback and recognition, fostering a sense of teamwork, creating opportunities for professional development, and setting high standards for performance. Managers must lead by example and demonstrate the behaviors and attitudes that they expect from their employees. They must hold themselves and others accountable for their actions, communicate expectations clearly, and provide support when needed. A positive organizational culture will enable an organization to attract and retain top talent, increase employee engagement, and promote collaboration and innovation.

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Step-by-step explanation:

Distance= ✓(-2-0)²+(8+1)²

=✓(4+81)

=✓85

Let's consider an example with hypothetical data for two crops, Wheat and Rice, obtained from five farmers:

| Farmer | Rabi Crop (tons/ha) | Kharif Crop (tons/ha) |

|--------|--------------------|----------------------|

|   F1   |        4.5         |         6.2          |

|   F2   |        3.8         |         5.5          |

|   F3   |        4.2         |         6.0          |

|   F4   |        5.1         |         7.3          |

|   F5   |        4.9         |         6.5          |

```

To calculate the selling price and profit, you would need additional information such as the selling price per ton for each crop and the cost of production. Let's assume the selling price for Wheat is $200 per ton and for Rice is $250 per ton. We will also assume a production cost of $150 per ton for both crops.

To calculate the profit for each farmer, you can use the following formula:

Profit = (Selling Price - Production Cost) * Production

For example, let's calculate the profit for Farmer F1 with the given data:

Profit for Wheat = (200 - 150) * 4.5 = $225

Profit for Rice = (250 - 150) * 6.2 = $620

Repeat this calculation for each farmer and crop combination to obtain the profits for all.

Once you have the data for production, selling price, and profit, you can create a double bar graph to compare the production of Wheat and Rice in the farmers' fields. The x-axis will represent the farmers, and the y-axis will represent the production (tons/ha). Each farmer will have two bars, one for Wheat and one for Rice, showing the respective production amounts.

Please note that the actual selling price, production costs, and profits may vary based on various factors, and you would need specific data and current market information to calculate accurate values.

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Step-by-step explanation:

125+680w>2,500+450w

Answer:

117°

Step-by-step explanation:

The total is 180° and the two are not congruent so

180°- 63° = 117°

Hope this Helps, Have a Wonderful Day :D

Answer:

The art gallery is 2 city blocks from the car wash

Step-by-step explanation:

Let us solve the question

∵ The art gallery is located at the point (13, -3)

∴ x1 = 13 and y1 = -3

∵ A car wash is located at (13, -5)

∴ x2 = 13 and y2 = -5

∵ x1 = x2 = 13

→ That means the gallery and the car wash located vertically over each other

∴ The distance between them = Iy2 - y1I

∵ y1 = -3 and y2 = -5

∴ The distance between them = I-5 - (-3)I

∴ The distance between them = I-5 + 3I

∴ The distance between them = I-2I

→ Remember the absolute value cancel the negative sign

∴ The distance between them = 2 units

∵ Each unit on the map is a city​ block

∵ The distance between them is 2 units

→ That means the vertical distance between them is 2 city blocks

∴ The art gallery is 2 city blocks from the car wash

Answer:

Step-by-step explanation:

two circles: 2(πr²)

1 rectangle:Lw

3.14(7)(7)

3.14(49)

2(153.86)=307.72

307.72(14)

4308.08

The figure consists of a rectangle and 2 right triangles, as shown in the diagram below

The areas of a rectangle and a triangle are given by the following formulas

In our case,

Thus,

The total area is 150mm^2