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A detailed outline is compiled from A. source material. B. works cited. C. note cards. D. the thesis statement.

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A detailed outline is compiled from A. source material. B. works cited. C. note cards. D. the thesis statement.

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The following graph shows the demand curve for a group of consumers in the U.S. market (blue line) for Blu-ray players. The market price of a Blu-ray player is shown by the black horizontal line at $150. Each rectangle you can place on the following graph corresponds to a particular buyer in this market: orange (square symbols) for Antonio, green (triangle symbols) for Caroline, purple (diamond symbols) for Dmitri, tan (dash symbols) for Frances, and blue (circle symbols) for Jake. Use the rectangles to shade the areas representing consumer surplus for each person who is willing and able to purchase a Blu-ray player at a market price of $150. (Note: If a person will not purchase a Blu-ray player at the market price, indicate this by leaving his or her rectangle in its original position on the palette.

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On December 15, 1791, the Bill of Rights (the first ten amendments to the United States Constitution) were ratified by the states.

The Bill of Rights were added to the Constitution to address fears raised by the Anti-Federalists during the ratification of the Constitution that the Constitution did not provide sufficient protection against abuses of power by the federal government. 

James Madison, the Father of the Constitution, originally did not think a Bill of Rights was necessary. He thought the Constitution gave no power to the federal government that would allow for a violation of the rights of the people.

Madison later changed his position, persuaded mainly by Thomas Jefferson, and, with the help of others, drafted twenty amendments that were proposed to the first United States Congress in 1789.

Twelve of the proposed amendments were accepted by Congress and were then sent to the states for ratification. Only ten were ratified.

These ten amendments list our basic rights and place limits on the federal government. They include the freedoms of speech and religion, the right to bear arms, the right to be free from unreasonable searches and seizures, and an assurance that the powers not delegated to the federal government in the Constitution are reserved to the states and the people. Many of these provisions were based upon similar protections provided by state constitutions that limited the power of state and local government authorities.

Of the remaining amendments that were not ratified in 1791, one was later adopted in 1992 as the twenty-seventh amendment to the Constitution. That amendment prevents changes in the compensation for senators and representatives until after a subsequent election of representatives. The other proposed amendment has never been adopted.

The Bill of Rights illustrates that our Founders understood that for personal freedoms to be broad, the power of the federal government must be limited.

Our nation, however, has moved away from its founding principles, especially during recent decades. Our ever-growing federal government is intervening into more and more aspects of our lives, especially through bureaucratic regulations, and is reducing our personal freedoms in the process.

Government at all levels is doing more and more things that were once left to private individuals and groups, and the federal government is doing more and more things that were once the province of state and local governments, where greater accountability to the public is often possible.

One need only look at the HHS mandate—forcing employers to violate their religious beliefs, under pain of penalty, by paying for and providing abortion pill insurance coverage—to see the harm caused by an overreaching government.

The preservation of our liberties is a daily battle, something our Founders understood. The process of scaling back the size and role of government and returning limits to it is a long one. But, since the federal government is supposed to be our servant and not our master, no one should doubt the importance of this endeavor.

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When the architects of our republic wrote the magnificent words of the Constitution and the Declaration of Independence, they were signing a promissory note to which every American was to fall heir. This note was a promise that all men, yes, black men as well as white men, would be guaranteed the "unalienable Rights of Life, Liberty, and the pursuit of Happiness." It is obvious today that America has defaulted on this promissory note insofar as her citizens of color are concerned. Instead of honoring this sacred obligation, America has given the Negro people a bad check, a check which has come back marked "insufficient funds." Which words in the passage support King’s purpose of making listeners believe that they deserve equality? Check all that apply. “architects” “magnificent” “heir” “promise” “guaranteed” “concerned”

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When the architects of our republic wrote the magnificent words of the Constitution and the Declaration of Independence, they were signing a promissory note to which every American was to fall heir. This note was a promise that all men, yes, black men as well as white men, would be guaranteed the “unalienable Rights of Life, Liberty, and the pursuit of Happiness.” It is obvious today that America has defaulted on this promissory note insofar as her citizens of color are concerned. Instead of honoring this sacred obligation, America has given the Negro people a bad check, a check which has come back marked “insufficient funds.” Which words in the passage support King’s purpose of making listeners believe that they deserve equality? Check all that apply. “architects” “magnificent” “heir” “promise” “guaranteed” “concerned”

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Look at the graph of this system of equations: y = – x2 + 1 and y = x2. At which approximate points are the two equations equal? A) (-0.7, 0.5) B) (0.5, 0.7) C) (0.7, 0.5) D) (-0.5, 0.7) Note: There can be more than answer. Help me and I will give you brainliest. Thank you. In this picture, there’s the graph.

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Y=-x^2+1 and y=x^2

When the two curves intersect their coordinates will be equal, so we can say y=y whenever a solution exists, so:

x^2=-x^2+1  add x^2 to both sides

2x^2=1  divide both sides by 2

x^2=1/2  take the square root of both sides

x=±√(1/2), so there are two solutions, we can use x^2 to find the corresponding y values.

y=x^2, y=1/2 in each instance, so the two point where the curves intersect are:

(-√(1/2), 1/2) and (√(1/2), 1/2)  or if you want approximations….

(-0.7, 0.5) and (0.7, 0.5)

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For every two 20cm by 25cm notebooks ann orders, she orders on 12cm by 20cm notebooks the orders total 48items. How many of the larger note books did she order

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For every two 20cm by 25cm notebooks ann orders, she orders on 12cm by 20cm notebooks the orders total 48items. How many of the larger note books did she order

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Calculate the speed with which the moon orbits the earth given the distance from earth to moon as R = 3.84 · 108 m. (Astronomers note that the true orbital period of the moon, is 27.3 Earth days. Interestingly, this would mean that there are approximately 13 months in a year. Use the 27.3 days/month for T – the time required for one revolution in your calculation.)

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This sounds pretty easy, in fact. The orbital motion can be assumed to be circular and with constant speed. Then, the period is the time to do one revolution. The distance is the length of a revolution. That is 2*pi*R, where R is the distance between the Moon and the Earth (the respective centers to be precise). In summary, it’s like a simple motion with constant speed:

v = 2*pi*R/T,

you have R in m and T is days, which multiplied by 86,400 s/day gives T in seconds.

Then v = 2*pi*3.84*10^8/(27.3*86,400) = 1,022.9 m/s ~ 1 km/s (about 3 times the speed of sound 🙂

For the Earth around the Sun, it would be v = 2*pi*149.5*10^9/(365*86,400)~ 29.8 km/s!

I know it’s not in the problem, but it’s interesting to know how fast the Earth moves around the Sun! And yet we do not feel it (that’s one of the reasons some ancient people thought crazy the Earth not being at the center, there would be such strong winds!)

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Taylor bank lends guarantee company $150,000 on january 1. guarantee company signs a $150,000, 8%, 9-month note. the entry made by guarantee company on january 1 to record the proceeds and issuance of the note is

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Taylor bank lends guarantee company $150,000 on january 1. guarantee company signs a $150,000, 8%, 9-month note. the entry made by guarantee company on january 1 to record the proceeds and issuance of the note is

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A gas is located inside a closed container. if the gas is allowed to occupy more volume inside the container, what will happen to the pressure? (note: there is no gas added to the container.)

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A gas is located inside a closed container. if the gas is allowed to occupy more volume inside the container, what will happen to the pressure? (note: there is no gas added to the container.)

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A 0.89% (w/v) sodium chloride solution is referred to as physiological saline solution because it has the same concentration of salts as human blood. what is the molarity of a physiological saline solution? (note: w/v means mass to volume)

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This problem is to apply Roult’s Law.

Roult’s Law states that the vapor pressure, p, of a solution of a non-volatile solute is equal to the vapor pressure of the pure solvent, Po solv, times the mole fraction of the solvent, Xsolv

p = Xsolv * Po sol

X solv = number of moles of solvent / number of moles of solution

The solvent is water and the solute (not volatile) is glycerin.

Number of moles = mass in grams / molar mass

mass of water = 132 ml * 1 g/ml = 132 g

molar mass of water = 18 g/mol

=> number of moles of water = 132 g / 18 g/mol = 7.33333 mol

mass of glycerin = 27.2 g

molar mass of glycerin:, C3H8O3: 3 * 12 g/mol + 8 * 1 g/mol + 3*16 g/mol = 92 g/mol

number of moles of glycerin = 27.2g / 92 g/mol = 0.29565

total number of moles = 7.33333 moles + 0.29565 moles = 7.62898 moles

=> X solv = 7.33333 / 7.62898 = 0.96125

=> p = 0.96125 * 31.8 torr ≈ 30.57 torr ≈ 30.6 torr.

Answer: 30.6 torr

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Review the excerpt from The Code Book. Cryptanalysts realize that their real goal is to find a way of cracking the RSA cipher, the cornerstone of modern encryption . . . Use the meaning of the underlined words above to understand the sentence. David’s family was puzzled by the short and cryptic note he left on the table. What does cryptic mean? clear plain believable mysterious

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Review the excerpt from The Code Book. Cryptanalysts realize that their real goal is to find a way of cracking the RSA cipher, the cornerstone of modern encryption . . . Use the meaning of the underlined words above to understand the sentence. David’s family was puzzled by the short and cryptic note he left on the table. What does cryptic mean? clear plain believable mysterious

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A weightlifter lifts a 250-kg mass 0.5 meters above his head, how much PEg does the mass have (Note: g=9.8 m/s2)?

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A weightlifter lifts a 250-kg mass 0.5 meters above his head, how much PEg does the mass have (Note: g=9.8 m/s2)?

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The brave men, living and dead, who struggled here, have consecrated it far above our poor power to add or detract. The world will little note, nor long remember, what we say here, but it can never forget what they did here.Abraham Lincoln, Gettysburg Address, 1863In this passage, what action does Lincoln want the audience to take?A.Think about Lincoln’s speech and study it for years to come B.Give the government the power to end the Civil War C.Honor Gettysburg and turn it into a national monument D.Remember the people who sacrificed their lives at Gettysburg

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Here are a few pointers; hope this is useful)

Ovation-by definition- is show of appreciation from an audience, for a person’s accomplishments or flaw.

“Everyone deserves a standing ovation because we all overcometh the world.”

A person’s accomplishment could be how they made a positive change in this world, strong leadership- that makes them a effective leader or simply helping others. A person’s flaw- mistakes in life, sin or even guilt should also be considered an appreciation- an ovation for representing mankind’s flaw and that humanity makes mistakes, fulfilling at least one deadly sin such as greed, lust, selfishness etc.

Thus, regardless of a person’s achievement or flaw- a person deserves an applause for, not the least, living in this society and this world that we are all living together and dying together.

That was just the introduction.. the best part is yet to come.. now it’s your turn!!

Here are other pointers to talk about in your essay:

Shakespeare’s famous line “All the World’s a stage. That agrees with your line: “Everybody deserves a standing ovation…”

Shakespeare explains that men and women are like players: they live, and die, some being celebrated and some forever living in solitude till their death. Shakespeare states the world is a “stage” which symbolizes that mankind is in its peak. The world is changing everyday: little by little and humanity is falling behind.
Due to our world turning into machinery: factories, an automotive future: where humans only job to live (entrance) and to die (exit) the famous humans remembered and the flawed not recalled.

This is according to Shakespeare’s imagery.

I don’t know what grade your in, but I think simplifying Shakespeare’s word of mouth in your essay would be handy and useful as it has strong references of your quote, and agrees strongly in your essay.

Hope this helps 🙂

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TOPIC: Distracted Drivers 1. Why is this topic a problem, especially for teen drivers? A. Find two statistics that prove your topic is a problem for teen drivers. B. List the websites where these statistics were found. 2. What groups are currently working to solve this problem? A. Name one group and explain what it is doing. B. Name a second group and explain what it is doing. C. List the websites where this information was found. 3. What is something else that can be done to help solve or alleviate this problem? (Note: This may not be something that is currently being done by another group.) 4. Using your idea about how to solve this problem, list two actions you can take that will make more people aware of this issue. A. One thing I can do is: B. Another thing I can do is:

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Here are the following effects of loose money and tight
money policies on the actions being listed.

A. A loose money policy
is usually implemented as an effort to encourage economic growth.
This can lead to inflation when uncontrolled. The effects are:

1. Borrowing becomes easy

2. Consumer buys more

3. Since more people are willing to buy,
businesses expand

4. Employment rate increases due to
expansion of businesses

5. Since more people are employed, thus
production also increases

 

B. A tight money policy is a course of action to restrict spending
in an economy that is growing too quickly or to hold back inflation when it is
rising too fast. This can lead to recession when uncontrolled. The
effects are:

1. Borrowing becomes difficult

2. Consumer buys less

3. Since people don’t have a lot of
money, business don’t expand

4. Unemployment rate increases due to businesses
slowing down

5. Production decreases

 

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You suspect your patient is in shock. you note the patient’s skin is pale. this is likely due to ___________.

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The EMT should suspect abdominal aortic aneurism. It is a condition where the lower part of the aorta is enlarged. The aorta is the main blood vessel that is supplying blood to the whole body. It runs from the heart to the abdomen. The cause for developing this is not certain, however, it is associated with tabacco use, high blood pressure, atherosclerosis, infection and genetic factors.

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A gasoline engine operates at a temperature of 270°c and exhausts at 180°c. calculate the maximum efficiency of this engine. (note that the celsius scale is used.)

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The equation for how temperature changes the resistance R is: 

R=R₀(1+α(T-T₀)), where R₀ is the resistance at T₀=20°C, T is the temperature for which we want to calculate the resistance and α is the temperature coefficient for resistance. 

The resistance of the copper wire increases by 18% or by 0.18, so the new value for the resistance is R=1.18*R₀.

T₀=20°C
=0.0068
R=1.18*R₀

Now we need to input that into the equation for resistance change and solve for temperature T.  

1.18R₀=R₀(1+α(T-20)), R₀ cancels out,

1.18=1+α(T-20),

1.18-1=α(T-20), we divide by α,

0.18/α=T-20, we put 20 on the left side,

26.47+20=T

T=46.47°C

So the temperature on which the resistance of copper wire will increase by 18% is T=46.47°C. 

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Look at the five words you selected to study during this lesson. Use the third one in an original sentence. In a second sentence, explain how you have used this word in your daily life. In a third sentence, explain where you have heard or read this word. Use proper grammar and spelling. Note: You must write your own original sentence to receive points for this question. My word Exhaust

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Hey there!

Correct answer is D. Comma or Period Inside Rule

A. Question mark or exclamation point inside: those are not really necessary.

B. Colon or semicolon: not, a semicolon would divide the whole sentence and it would be shorten; a colon would work but after requested, when there is already a comma.

C. Question mark or Exclamation Point Outside Rule: would not work, becase it is an very polite and affirmative sentence.

D: A comma or period inside rule: actually, just a comma would work. Please, Cooper’s dad requested, go… Cooper’s dad requested must be in between commas as it is a vocative.

Hope this helps

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A 59-year-old female with history of non-insulin-dependent diabetes mellitus (niddm), hypertension, and chronic kidney disease (ckd) returns for follow-up of her labs. you note that she her gfr has decreased from 40 to 36 ml/min/1.73m 2 . what stage of chronic kidney disease is she currently

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Charlie had a waist circumference of 47 inches and a BMI of 29 this shows that she is overweight. BMI test level is high from normal ranges shows that she is at higher risk of disease. She should lose weight and concern to the doctor.

Further Explanation:

Body mass index (BMI) is a measured value derived from the height of a person and mass.

{text{BMI}}=dfrac{{{text{mass (kg)}}}}{{{{left( {{text{height}}}right)}^2}{{left({text{m}}right)}^2}}}

BMI indicates whether the person is healthy or overweight mainly used by physicians.

• Range of BMI in a normal person is 18.5-25mathbf{kg/m}^{2}

• Range of BMI in skinfold person is 25-30mathbf{kg/m}^{2}

• Range of BMI in underweight person is 15-18.5mathbf{kg/m}^{2}

The skinfold measurement test is used to determine a person’s body fat percentage and body composition.

In this test, we are the proportion of body fat by determining skinfold thickness at pinches specific part of the body. The estimate of these folds is determined the fat beneath the skin, also called subcutaneous adipose tissue.  

The tester pinches the skin at the site and drags the fold of skin away from the muscle so only the fat tissue and skin are being held. The skinfold thickness is measured by skinfold calipers in millimeters.

Skin test includes the seven locations of the body:

1. Triceps

2. Quadriceps

3. Suprailiac

4. Pectoral

5. Subscapular

6. Midaxilla

7. Abdomen

Charlie had a waist circumference of 47 inches and a BMI of 29 this shows that she is overweight. Females with waist size 47 inches have higher risk of having disease. BMI test level is high from normal ranges shows that she is at higher risk of disease.She should lose weight and concern to the doctor.

Learn more:  

1. Learn more about carbohydrate monomer brainly.com/question/6947177

2. Learn more about core muscle stabilization brainly.com/question/1231927

3. Learn more about energy storagehttps://brainly.com/question/523624

Answer Details:

Grade: High School

Subject: Health

Chapter: Physical Fitness

Keywords:

Body index mass, weight, doctor, triceps, abdomen, midaxilla, Quadriceps, skinfold, mass, height, pectoral.

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In order to prevent discrimination against applicants of protected classes, your colleague decides to note the protected class characteristic of the applicants on their applications. what would be your advice to her

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In order to prevent discrimination against applicants of protected classes, your colleague decides to note the protected class characteristic of the applicants on their applications. what would be your advice to her

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The stages of mitosis were originally defined by cellular features observable through a light microscope. the six micrographs below show animal cells (lung cells from a newt) during the five stages of mitosis, plus cytokinesis. (note that interphase is not represented in these micrographs.) in these images, the chromosomes have been stained blue, microtubules green, and microfilaments red.

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From left to right.

1) Cytokinesis is almost
finishesd, so it’s the end of Telophase

2) The chromatids have just
split up and are migrating to each pole, so it’s Anaphase

3) All chromosomes are in the
equatorial plane, so it’s the end of Metaphase

4) The chromosomes are in the
poles and cytokinesis has just started, so it’s the beginning of Telophase

5) The spindle apparatus is
complete and the chromosomes are moving to the equatorial plate, so it’s the
beginning of Metaphase

6) The spindle apparatus is forming,
so it’s Prophase

 

If you want to put them in
chronological order, it’s like this:

6-5-3-2-4-1

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On november 1, gentle company received a $3,000, 6%, three-month note receivable. the cash to be received by gentle company when the note becomes due is:

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To calculate the maturity of this note,

we use a simple formula first to get the interest which is:

I = Principal (amount owed) X Interest Rate (%) X Time (length of loan)

The days is only divided by only 360 days instead of 365 days. This is because commercial loans often use 360-day calendar years instead of 365-day calendar years. But not all banks used this as their calendar year,

 

I = Prt

= ($80000) (0.05) (120/360)

= ($80000) (0.01666666666)

I = $ 1,333.33

 

To get the maturity value, the formula is: M = Interest + Principal

M = I + P

= $1,333.33 + $80,000

= $81,333.33 or $81,333, letter C

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Alexandra is scuba diving. Every 5 minutes an alarm goes off, and she checks her instruments and makes note of her depth. The depth readings from her first 20 minutes of diving are shown in the table below. Elapsed time (in minutes) Depth (in meters) 0 0 5 –12.45 10 –9.7 15 –22.98 20 –6.6 Which best represents the greatest amount of change in her depth over a single 5-minute period?

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Answer:

y =frac{7}{8}x + 12 andy = -frac{8}{7}x - 8

Step-by-step explanation:

The product of the slopes of the perpendicular lines is -1

Option 1) y =frac{7}{8}x + 12 andy = -frac{8}{7}x - 8

General equation of line : y=mx+c

Comparing with general equation

Slope of line 1 = frac{7}{8}

Slope of line 2=  -frac{8}{7}

Now product of slopes = frac{7}{8} times frac{-8}{7}

                                      = -1

Since The product of the slopes of the perpendicular lines is -1

So, y =frac{7}{8}x + 12 andy = -frac{8}{7}x - 8 represent perpendicular lines

Option 2) y = 5x + 15 and  y = -5x + 15

General equation of line : y=mx+c

Comparing with general equation

Slope of line 1 = 5

Slope of line 2= -5

Now product of slopes = 5 times -5

                                      = -25

Since The product of the slopes of the perpendicular lines is not -1

So, y = 5x + 15 and  y = -5x + 15 does not represents the  perpendicular lines.

Option 3) y = 4x + 9 and y = 4x -9

General equation of line : y=mx+c

Comparing with general equation

Slope of line 1 = 4

Slope of line 2= 4

Now product of slopes = 4 times 4

                                      = 16

Since The product of the slopes of the perpendicular lines is not -1

So, y = 4x + 9 and y = 4x -9does not represents the  perpendicular lines.

Option 4)y = 9 and y = 18

General equation of line : y=mx+c

Comparing with general equation

Slope of line 1 = 0

Slope of line 2=0

Now product of slopes = 0 times 0

                                      = 0

Since The product of the slopes of the perpendicular lines is not -1

So,y = 9 and y = 18 does not represents the  perpendicular lines.

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While counting the apical pulse on a 16-year-old patient, you note an irregular rhythm. his rate speeds up on inspiration and slows on expiration. what would be your response?

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1. This type of immunity would be passive artificial immunity. Passive artificial immunity is the injection of serum that makes human body invulnerable to specific diseases. But the effect of this serum is temporary. To refresh its effect you should to make the injection again. Sure, you can do it only in advice of your doctor.

2. 

 According to the information given above, I think that the nurse is aware that the most serious toxic effect of acute acetaminophen overdose is hepatic necrosis. Hepatic necrosis is a serious liver failure that can be caused by toxic injuries of acute acetaminophen (or others medicines) overdose.

3. In my opinion, nurse should respond like this: “

It is normal for children this age to regress during a stressful event like a hospitalization. Try to calm down your child and say her that everything is going to be okay.”

4. The most appropriate response by the nurse is: 

“Tattoos are invasive and there is the potential for disease with their application.” Girl should find tattoo parlor with appropriate conditions to make tattoo without a risk getting infected.

5. Referring to Women’s Health Initiative study, hormone replacement therapy has a potential risk of breast cancer

 and myocardial infarction and stroke may outweigh the potential benefit of alleviating symptoms associated with menopause. 

6. I am completely sure that the most likely cause is 

fibrocystic disease, which results from hormonal changes during the menstrual cycle. Sure it’s necessary to undergo medical examination to prevent the possible breast cancer.

7. I think that the cause of her vaginitis is antibiotics. Long antibiotic therapy eliminate bacilli that create healthy vaginal environment. This can lead to growth of microorganisms which can lead to vaginitis.

8. According to the information given above, the nurse should say that girl needs to avoid prolonged sun exposure to prevent a common side effect of this medication. Prolonged sun exposure can cause scorches.

9. The nurse should recommend him to recheck his blood pressure within two months. Hypertension is more prevalent in black communities and blood pressure 150/90 mm Hg is not normal. So it would be necessary to check his pressure at least every 2 months.

10. As far as I remember “

A spinal cord injury patient has no awareness of the need to void” is considered as a reflex (neurogenic) incontinence. Reflex incontinence is caused by a dysfunction in the detrusor muscle.

11. I am definitely sure that the nurse should encourage the patient to see her gynecologist as soon as possible. In 

perimenopausal period all women should make annual checkups that include vaginal examination.

12. In my view, when planning this patient’s care, the nurse should prioritize the r

isk for infection related to suppressed bone marrow function. There is a risk of leukopenia and subsequent infection because doxorubicin suppresses bone marrow function.

13. I think that the most appropriate explanation of the disease sounds like this: “

Tissue similar to the lining of the uterus has implanted in areas outside the uterus.” A benign lesion grows aberrantly anywhere in the pelvic cavity outside the uterus.

14. I am pretty sure that w

hen the needle is inserted and the mass is no longer palpable, this mass may become cystic and was ruptured when the needle was inserted. 

15. 

The nurse recognizes in this situation the boy’s attempt to master the primary developmental step of school age, which is called industry. Industry is a sense of learning how to master your skills. In this situation, boy wants to show the nurse his skills and then to master them because he wants to become a doctor. 

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A 39-year-old male sustained a stab wound to the groin during an altercation at a bar. as you approach the patient, you note that he is conscious, is screaming in pain, and is attempting to control the bleeding, which is bright red and spurting from his groin area. you should: a. apply direct pressure to the wound. b. elevate his legs and keep him warm. c. ensure that his airway is patent. d. administer 100% supplemental oxygen.

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Answer : i) Drinking alcohol and smoking cigarettes – It will have direct harm on individual’s body and the health will deteriorate.

ii) Vegetable Hater – The major chunk of proteins, fibers, vitamins comes from veggies. If they are skipped it will cause a health issue in a person.

iii) Hate socializing – Mental health is also important. One needs to socialize and make new friends to release stress and anxiety.

iv) Avoiding Traveling – Being a homebound has its own side effects. There will be lot of respiratory issues if one cannot breathe in the fresh air of the surrounding nature.

v) Not playing sports – A physical activity keeps an individual’s body fit. Lacking of this may give invitation to many diseases.

vi) Not drinking enough water – Health is largely influenced by the water that we drink, as our bodies are composed of 70% water. It is essential to take the correct amount of water in our body.

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Iron has a density of 7.86 g/cm3. Calculate the volume (in dL) of a piece of iron having a mass of 4.26 kg . Note that the density is provided in different units of volume and mass than the desired units of volume (dL) and the given units of mass (kg). You will need to express the density in kg/dL (1 cm3 = 1 mL) before calculating the volume for the piece of iron

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The molality of a 25.4 % (by mass) aqueous solution of phosphoric acid left({{{text{H}}_{text{3}}}{text{P}}{{text{O}}_{text{4}}}}right)  is boxed{{text{3}}{text{.47 m}}} .

Further Explanation:

The proportion of substance in the mixture is called concentration. The most commonly used concentration terms are as follows:

1. Molarity (M)

2. Molality (m)

3. Mole fraction (X)

4. Parts per million (ppm)

5. Mass percent ((w/w) %)

6. Volume percent ((v/v) %)

Molality is equal to the amount of solute that is dissolved in one kilogram of the solvent. It is denoted by m and its unit is moles per kilograms (mol/kg). The component present in smaller quantity is solute while that in larger quantity is known as a solvent. The solute gets itself dissolved in the solvent.

The formula to calculate the molality of {{text{H}}_{text{3}}}{text{P}}{{text{O}}_{text{4}}}  solution is as follows:

{text{Molality of }}{{text{H}}_3}{text{P}}{{text{O}}_4};{text{solution}}=frac{{{text{Amount}};left({{text{mol}}} right);{text{of}};{{text{H}}_3}{text{P}}{{text{O}}_4}}}{{{text{Mass}};left({{text{kg}}}right);{text{of}};{{text{H}}_2}{text{O}}}}                              …… (1)

Consider 100 g to be the mass of the sample. Phosphoric acid left({{{text{H}}_3}{text{P}}{{text{O}}_4}}right)  is 25.4 % by mass. So the mass of {{text{H}}_{text{3}}}{text{P}}{{text{O}}_{text{4}}}  is 25.4 g.

The formula to calculate the mass of {{text{H}}_{text{3}}}{text{P}}{{text{O}}_{text{4}}}  solution is as follows:

{text{Mass of }}{{text{H}}_{text{3}}}{text{P}}{{text{O}}_{text{4}}}{text{ solution}}={text{Mass of }}{{text{H}}_{text{3}}}{text{P}}{{text{O}}_{text{4}}}+{text{Mass of }}{{text{H}}_{text{2}}}{text{O}}                     …… (2)

Rearrange equation (2) to calculate the mass of {{text{H}}_2}{text{O}} .

{text{Mass of }}{{text{H}}_{text{2}}}{text{O}}={text{Mass of }}{{text{H}}_{text{3}}}{text{P}}{{text{O}}_{text{4}}}{text{ solution}}-{text{Mass of }}{{text{H}}_{text{3}}}{text{P}}{{text{O}}_{text{4}}}               …… (3)

The mass of {{text{H}}_{text{3}}}{text{P}}{{text{O}}_{text{4}}}  solution is 100 g.

The mass of {{text{H}}_{text{3}}}{text{P}}{{text{O}}_{text{4}}}  is 25.4 g.

Substitute these values in equation (3).

begin{aligned}{text{Mass of }}{{text{H}}_{text{2}}}{text{O}}&={text{100 g}}-{text{25}}{text{.4 g}}\&={text{74}}{text{.6 g}}\end{aligned}

Mass of  {{text{H}}_2}{text{O}} is to be converted into kg. The conversion factor for this is,

{text{1 g}}={10^{ - 3}};{text{kg}}

So the mass of {{text{H}}_2}{text{O}}  is calculated as follows:

begin{aligned}{text{Mass of }}{{text{H}}_{text{2}}}{text{O}}&=left({{text{74}}{text{.6 g}}}right)left({frac{{{{10}^{ - 3}};{text{kg}}}}{{{text{1 g}}}}}right)\&=0.074{text{6 kg}}\end{aligned}

The formula to calculate the moles of {{text{H}}_{text{3}}}{text{P}}{{text{O}}_{text{4}}}  is as follows:

{text{Moles of }}{{text{H}}_{text{3}}}{text{P}}{{text{O}}_{text{4}}}=frac{{{text{Given mass of }}{{text{H}}_{text{3}}}{text{P}}{{text{O}}_{text{4}}}}}{{{text{Molar mass of }}{{text{H}}_{text{3}}}{text{P}}{{text{O}}_{text{4}}}}}                                             …… (4)

Substitute 25.4 g for the given mass and 97.99 g/mol for the molar mass of   {{text{H}}_{text{3}}}{text{P}}{{text{O}}_{text{4}}} in equation (4).

begin{aligned}{text{Moles of }}{{text{H}}_{text{3}}}{text{P}}{{text{O}}_{text{4}}}&=left( {{text{25}}{text{.4 g}}}right)left({frac{{{text{1 mol}}}}{{{text{97}}{text{.99 g}}}}}right)\&=0.259{text{2 mol}}\end{aligned}

Substitute 0.2592 mol for the amount of {{text{H}}_{text{3}}}{text{P}}{{text{O}}_{text{4}}}  and 0.0746 kg for the mass of {{text{H}}_2}{text{O}}  in equation (1).

begin{aligned}{text{Molality of }}{{text{H}}_3}{text{P}}{{text{O}}_4};{text{solution}}&=frac{{{text{0}}{text{.2592 mol}}}}{{{text{0}}{text{.0746 kg}}}}\&=3.4746{text{6 m}}\&approx 3.4{text{7 m}}\end{aligned}

Therefore the molality of {{text{H}}_{text{3}}}{text{P}}{{text{O}}_{text{4}}}  solution is 3.47 m.

Learn more:

1. What is the concentration of alcohol in terms of molarity? brainly.com/question/9013318

2. What is the molarity of the stock solution?: brainly.com/question/2814870

Answer details:

Grade: Senior School

Subject: Chemistry

Chapter: Solutions

Keywords: concentration terms, molality, m, mol/kg, H3PO4, moles of H3PO4, mass of H2O, H2O, 25.4 %, 25.4 g, 100 g, 74.6 g, 0.2592 mol, 3.47 m.

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