Questions Asked on
November 17, 2007

Math  Trig  Double Angles
Prove: cos4x = 8cos^4x  8cos^2x + 1 My Attempt: RS: = 4cos^2x (2cos^2x  1) + 1 = 4 cos^2x (cos2x) + 1 LS: = cos2(2x) = 2cos^2(2x)  1 = (cos^2(2))  cos^2(2x))  1  Prove: 8cos^4x = cos4x + 4cos2x + 3 My Attempt: RS: = cos2(2x) + 4cos(2x) + 3 =
asked by Anonymous 
chem
A piece of solid carbon dioxide, with a mass of 6.2 g, is placed in a 4.0 L otherwise empty container at 21°C. ( a) What is the pressure in the container after all the carbon dioxide vaporizes? atm (.86 atm) (b) If 6.2 g solid carbon dioxide were placed
asked by mel 
Objective functon
An objective function and a system of linear inequalities representing constraints are given. Graph the system of inequalities representing the constraints. Find the value of the objective function at each corner of the graphed region. Use these values to
asked by Soly 
Business Communication
This is the assignment. What would you suggest your boss change in the following email message, and why? Would you consider this message to be audience centered? Why or why not? Revise the email so that it follows effective communication guidelines. This
asked by Cupcake 
physics
a coast guard ship is traveling at a constant velocity of 4.20m/s, due east, relative to the water. on his radar screen the navigator detects an object that is moving at a constant velocity. the object is located at a distance of 2310m with respect to the
asked by ajo 
Dr. Bob
Okay so I read your part on the discussion... and I added it to my discussion it just seems like I need more my professor said that the discussion part is supposed to repeat everything talked about in the previous sections like the intro,methods ect. It
asked by Suzy 
dr. bob
Use the data in Table 5.4 to calculate the partial pressure of He in dry air assuming that the total pressure is 1.0 atm. Assuming a temperature of 21°C, calculate the number of He atoms per cubic centimeter. atoms/cm3 .00000524  atmospheric composition
asked by mel 
chem
A 75.0 L stainless steel container was charged with 3.00 atm of hydrogen gas and 4.00 atm of oxygen gas. A spark ignited the mixture, producing water. What is the pressure in the tank at 25°C? in atm What is the pressure in the tank at 125°C? in atm
asked by mel 
Mike
N2 + 3H2 > 2NH3 At 25°C (delta)Ho = 92.22 kJ and (delta)So = 198.53 J/K. Using this information, calculate the equilibrium constant for the reaction at 2.43x10^2°C. (R = 8.314 J/K) Apparently the way I'm doing it is wrong: I divide 198.53 by 1000
asked by Chemistry 
English Grammar
1. TV gives us a lot of pleasure. 2. TV gives a lot of pleasure to us. Sentence 1 is a Sentence Pattern Four sentence. This sentence can be changed into a Sentence Pattern Three sentence as in Sentence 2. Change the direct object and the indirect object,
asked by John 
chem
A spherical glass container of unknown volume contains helium gas at 25°C and 1.950 atm. When a portion of the helium is withdrawn and adjusted to 1.00 atm at 23°C, it is found to have a volume of 1.55 cm3. The gas remaining in the first container shows
asked by mel 
Dan
N2 + 3H2 > 2NH3 At 25°C (delta)Ho = 92.22 kJ and (delta)So = 198.53 J/K. Using this information, calculate the equilibrium constant for the reaction at 2.43x10^2°C. (R = 8.314 J/K) Apparently the way I'm doing it is wrong: I divide 198.53 by 1000
asked by Chem 
Math  Trig  Double Angles
Prove: sin2x / 1  cos2x = cotx My Attempt: LS: = 2sinxcosx /  1  (1  2sin^2x) = 2sinxcosx /  1 + 2sin^2x = cosx / sinx  1 = cosx / sinx  1/1 = cosx / sinx  sinx / sinx  Prove: 2sin(x+y)sin(xy) = cos2y  cos2x My Attempt: RS: = 1  2sin^2y  1 
asked by Anonymous 
Physics
A certian radioactive isotope has a halflife of 1 hour. If you start with 1 gram of the material at noon, how much of the original isotope will the sample contain at 3 pm? At 6 pm? At 10 pm?
asked by Judy 
chem
a) Calculate the pressure exerted by 0.5160 mol N2 in a 1.0000 L container at 24.6°C using the ideal gas law. atm (b) Calculate the pressure exerted by 0.5160 mol N2 in a 1.0000 L container at 24.6°C using the van der Waals equation. atm (c) Compare the
asked by mel 
chem
A spherical glass container of unknown volume contains helium gas at 25°C and 1.950 atm. When a portion of the helium is withdrawn and adjusted to 1.00 atm at 23°C, it is found to have a volume of 1.55 cm3. The gas remaining in the first container shows
asked by mel 
chem
A spherical glass container of unknown volume contains helium gas at 25°C and 1.950 atm. When a portion of the helium is withdrawn and adjusted to 1.00 atm at 23°C, it is found to have a volume of 1.55 cm3. The gas remaining in the first container shows
asked by mel 
science
What is the ratio of sulfur atoms to oxygen atoms in SO2?
asked by Colin 
Law and Ethic in Med
Please check my answer thanks :) I am really not sure on this one What can a stillborn child's estate do with regqurds to lawsuits ? 1. Sue for wrongful death in most states? 2. Sue for wrongful death in only in a few states. 3. Can't sue for wrongful
asked by Anonymous 
Algebra
Please check my answers: Solve the problem. A steel company produces two types of machine dies, part A and part B. The company makes a $3.00 profit on each part A that it produces and a $5.00 profit on each part B that it produces. Let x= the number of
asked by Soly 
physics
an airplane has a mass of 3.1*10^4kg and takes off under the influence of a constant net force of 3.7*10^4N. what is the net force that acts on the plane's 78kg pilot? can anyone give me some hints to do this?THX A LOT!
asked by ajo 
Legal and Ethical
Compare and Contrast deontological and teleological ethical systems
asked by I am so confused 
English Grammar
e.g. The bar graph below shows the TV viewing habits of Koreans. In this sentence, what is the part of speech of 'below'? Can we write like this?: The bar graph which is below shows the TV viewing habits of Koreans.
asked by John 
Algebra
Can you please check my answer: Solve the problem. A person with no more than $4000 to invest plans to place the money in two investments, telecommunications and pharmaceuticals. The telecommunications investment is to be no more than 3 times the
asked by Soly 
Chemistry  Concentration and Time
1. How is the rate affected by doubling the concentratino? 2. Explain the effect of concentration on the rate of a reaction in terms of the "Collision Theory" of chemical reactions. 3. Considering that 1/Time is proportional to the rate of the reaction how
asked by Dick Rogers 
law and ethics in med
please check my answer thanks :) The state would most likley invoke what if a child is at risk for abuse or neglect. my answer is... Parens patriae
asked by Anonymous 
Ethics
What do you believe in the future of Asian diversity in America?
asked by Danny 
English Grammar
1. You should read problem books to pass the test. 2. I watch TV on the sofa leaning against the back of the sofa. 3.You should make your Father shoes shined.  Are the three sentences all grammatical?
asked by John 
Law and Ethics in Med
Please check my answer thanks :) Give an example of paternalism prevailing over autonomy? My answer is ... Requiring a Jehovah's Wittness to receive blood transfusions against her will.
asked by Anonymous 
Spanish
Hello. :] I've tried all the online translators, but they don't work... What is materias in English?
asked by Eve 
Dr. Bob
And here is the discussion part of the lab how would I put like a concluding sentence to this. DISCUSSION: This experiment was conducted to determine the iron content in a breakfast cereal. The results indicate 39% iron in a sample of Kix cereal. This
asked by Suzy 
Law and Ethics in Med
Please check my answer thanks :) Roe v Wade is based in part on... the fetus's right to be born after the first trimester True or False My answer is True
asked by Anonymous 
Economics
What is the value added and how is it related to GDP?
asked by Latrisha 
College Algebra
These are the points on the graph! O year = $41000 1 year = $43000 2 year = $46000 3 year = $48500 The following graph shows Bob’s salary from the year 2002 to the year 2005. He was hired in the year 2002; therefore t = 0 represents the year 2002. List
asked by Cupcake 
math
Find y' : y= (82x^2)/(root of (8x^2))
asked by mo 
Economics
In the event of Hurricanes in the Gulf Coast and the Market affected by event is Gulf Coast tourism is there a Shift in supply, demand, or both and the Change in equilibrium would be what?
asked by Anonymous 
English Grammar
The verb exercise is a regular verb. Exercise has a consonant and a silent e at the end, so you should edd just d to the end. And ed is pronounced [id] in this verb.  Is this explanation correct? If there are errors, correct
asked by John 
Critical Thinking
Can anyone tell me what the Contrapositive is for this sentence? Jane or Tom will wake up Tanner this evening. Compound: Yes Conditional: Yes Antecedent: Jane or Tom Consequent: Will wake up Tanner this evening. Contradictory: Neither Jane or Tom will wake
asked by Diane 
College Algebra
This is what I have came up with so far, but it says to plug in another value for x in number 2, what does this mean? So the equation to convert Fahrenheit to Celsius is simply to take the temp in F, subtract it by 32 and then divide that value by 1.8. So
asked by Alicia 
Michael can you help with this one
This sentence I think is slippery slope. There is no value at all in Heidegger's philosophy, especially his ethics,since he collaborated with the Nazis in running German universities in the 1930s and fired all the Jews.
asked by Diane 
For DrBob
Hey DrBob, I posted an answer to you question on my lab report just to let you know what the y= and r^2 is
asked by Suzy 
Biology  photosynthesis
1. In measuring the amount of ATP and NADPH consumed by the Calvin cycle, you find 30,000 molecules of ATP consumed but only 20,000 molecules of NADPH. WHere did the extra ATP molecules come from? A) Chlorophyll B) photosystem II C) cyclic electron flow D)
asked by J 
Algebra 1
is this a linear equation 4xy + 2y = 9
asked by Kayla 
Algebra
Plot the following points on the given rectangular coordinate system by clicking on the given dots and dragging them. Points to plot: (3, 2 ) (1, 0) (1, 2) If you were to connect these points with a line, where would the yintercept be located? Give
asked by Cupcake 
Partial Decompostion Fractions
Can you please help me with the following questions please, I don't understand them. I know the general rule about them. Write the partial fraction decomposition of the rational expression. (x^2+4x1)/(x^2+3)^2 (4x^3+4x^2)/(x^2+5)^2
asked by Soly 
Law and Ethics in Med
Please check my answer thanks :) Breach of confidentiality could have which of the following consequences ? 1. Ethical only 2. Legal only 3. Ethical or legal 4. Licensure revocation only I think # 3
asked by Anonymous 
greatest events after 1987
List five events which have occurred after 1987 that you feel have most markedly altered your economic/technical future. i have to come up with five things but i'm stuck. i'm researching on the internet but i can't find anything. telephones and electricity
asked by julie 
English expression
Who are teenagers? They are young people who are from thirteen to nineteen. Look at the words such as thirteen, fourteen....nineteen. They all have teen, so people who are from thirteen to nineteen are called teenagers.
asked by John 
Math
What is the real value of x in the equation log(subscript 2)24log(subscript 2)3=log(subscript 5)x? I really cannot remember at all how logs work. I know the answer is 125 but have no idea how to get there. Thanks in advance.
asked by Natalie 
Critical Thinking( Urgent)
I need someone to help refute this sentence . If Zoe and !@#$%^& don't quarrel for a whole week, they'll go on vacation to the mountains. But they did quarrel. So they won't go on vacation. Is this one right? Because Zoe and !@#$%^& did quarrel for a
asked by Diane 
Poster stuff
I'm doing a project in my geometry on a career that involves geometry. I'm doing mine on a cabinet maker. My teacher says that we must be prepared to answer a couple of questions, since it is required of the class to turn in with their project. What might
asked by Emily 
Dr.Bob
I had to take cereal crush it up and place it in a crucible and cook it tell it was black ash. Then I took that burnt ceral and placed it into a beaker with HCL and water and boiled it tell the cereal was like a liquid cause coming out of the crucible it
asked by Suzy 
Chemistry
How many milliliters of NH3 (at STP) are needed to react with 45.0 mL of NO2 (at STP) according to the equation: 8NO2 (g) + 6NH3 )g) yield 7N2O (g) + 9 H2O. How to set this up????? Thanks.
asked by Lucy 
Dr. Bob
I need to know what else would I put into my discussion part of my lab report
asked by Suzy 
Business
A friend of mine is planning on becoming an insurance agent, he is trying to decide whether he should represent just one insurance company, or several companies. Can you help me think of some of the pros and cons for each option.
asked by Justin 
Economics
Are large and powerful firms easier targets for union organization than small firms?
asked by Sharp 
math
x y 4 18 3 15 2 0 5 9 10 24 it's an input and output table. find the rate of change for this relationship.
asked by Anonymous 
Law and Ethics in Med
please check my answer thanks :) Dr Bob is sued for malpractice. when called to give testimony at trial. he will .... 1. be barred from revealing medical information about the patient. 2. be allowed to testify about the pt's care 3. allowed to testify, but
asked by Anonymous 
Critical Thinking
Please give me some examples of sentences this,What is a universal claim? Is this correct? Mary is the town clerk.
asked by Diane 
Law and Ethics in Med
please check my answer thanks :) Confidentiality of medical information is protected by...... 1. the US Constitution 2. no laws at all only by custom 3. none of the above My answer... I said #2
asked by Anonymous 
ACCOUNTING
THE NET INCOME OF SIMON AND HOBBS, A DEPT.STORE,DECREASED SHARPLY DURING 2000.CAROL SIMON, OWNER OF THE STORE, ANTICIPATES THE NEED FOR A BANK LOAN IN 2001. lATE IN 2000, SIMON INSTRUCTS THE STORE'S ACCOUNTANT TO RECORD A 410,000 SALE OF FURNITURE TO THE
asked by ROSE 
College Algebra
How would I find two points on a graph?
asked by Cupcake 
Algebra 2
Write an equation for the nth term of the geometric sequence: 12,4,4/3 I had a_n=12(3)^(n1) but that is not a choice on the multiple answers they have = 12(1/3)^(n1) = 12(1/3)^(n1) = 12(1/3)^(n+1) = 12 (1/3)^(n1)
asked by Chelsey 
accounting
calculate taxable income for 2005: this is related informaton given for 2005: income statement: sales 41,100 cogs (23,725) GP 17375 SG&a (15,492) EBIT 1883 TAXES 25% Net income 1412 tax issues: all 2005 assets purchases were made on 9/27/05 no estimated
asked by tiaa 
SCI 275
i need info.on benefits and challenges of urbanization and how the U.N. Conference gave awards for urban development projects that improved human settlements. I also need to include descriptions of two award winners,isscussing how they overcame 1 of the
asked by dawn 
Economics
What is the value added and how is it related to GDP?
asked by Latrisha 
HUM 130
i need to find 2 URL web sites dealing with indigenous culturals and/or religions. Then I need to discuss how modern civilization has impacted the spiritual lives of the indigenous peoples you explore. Are indigenous religions still practiced today? If
asked by dawn 
Law and Ethics in Med
Please check my answer thanks :) Breach of confidentiality could have which of the following consequences ? 1. Ethical only 2. Legal only 3. Ethical or legal 4. Licensure revocation only I think # 3
asked by Anonymous 
commercial law
hey there just wondering if any one could help me with ANY of the following questions pleeease??? i am so confused, am about ready to destroy my law book!! AND its due within 24 hours :( any help at all would be GREATLY appreciated! Thanks heaps in
asked by lj 
Is this an argument? if so, what is the premise?
TVC is opposed to any research that involves the deliberate killing of one human to benefit another human. "An unborn human is not of less value than a Parkinson's victim who needs treatment
asked by Lisa 
law and ethics in med
please check my answer thanks :) Which of the following is MOST pertinent in a legal or court room context? 1. confidentiality 2. privileged communication 3 etiquette 4.pt's expectaion of privacy I think it might be #2 I am not really sure
asked by Anonymous 
Law and ethics in med
please check my answer thanks :) Sally sues for malpractice, claiming she didn't know that the operation could have ( and in this case did have)negative consequnces. Your office has a copy of an informed consent signed by Sally. How will this affect her
asked by Anonymous 
College Algebra
The following graph shows Bob’s salary from the year 2002 to the year 2005. He was hired in the year 2002; therefore t = 0 represents the year 2002. These are the points on the graph! O year = $41000 1 year = $43000 2 year = $46000 3 year = $48500 List
asked by Cupcake 
Law
In theory, the law should treat everyone equally. However, in practice, this is not the case for many reasons. Young offenders belong to one group who are, in fact, treated differently by the criminal justice system in Australia (An around other countries
asked by xxCeLoL 
trick question
John, Jack, Joan and Jane are Art Critic, Aviator, Acrobat and Architect, though not necessarily in that order. The aviator, who is happily married, earns more than his sister, the art critic. Joan has never heard of “perspective”, John is a
asked by julie 
Math
Parents may help to save for their children’s university education using Registered Education Savings Plans (RESPs). Under the Canada Education Savings Grant Program, the government matches 20% of the parent’s contributions to an RESP (to an
asked by A 
Science
Is everyone having fun?
asked by MO 
acids and alkali
Is baking powder an acid or an alkali?
asked by MO 
SCHOOL FUNDING ISSUES
review the educational funding issues for New Jersey. Try to find information about the affect of school choice options on educational funding. Do you feel that there is a positive affect or a negative affect? What were some opposing viewpoints of your
asked by MONICA 
Ethics
Are fetalprotection policies discriminatory? Why?
asked by Bruce 
History
Can someone help me find some information that supports the idea that the Irish Potato Famine was really genocide?
asked by maggie r 
Algebra
For x such that 0
asked by Annie 
AP US History
What is a theocratic society?
asked by Jennifer 
College Algebra
This is what I have came up with so far, but it says to plug in another value for x in number 2, what does this mean? 1. So the equation to convert Fahrenheit to Celsius is simply to take the temp in F, subtract it by 32 and then divide that value by 1.8.
asked by Alicia 
Critical Thinking( Urgent)
How would I refute this sentence please? Mike Smith should not be a presidential candidate.After all, he has never held office.
asked by Diane 
Statistics
How do you tell if the null hypothesis rejects or fails?
asked by LT 
Statistics
What if my p value is below 0.05 does it reject or fail the null hypothesis
asked by LT 
Math
Parents may help to save for their children’s university education using Registered Education Savings Plans (RESPs). Under the Canada Education Savings Grant Program, the government matches 20% of the parent’s contributions to an RESP (to an annual
asked by A 
Social Studies
If I have birth rate, death rate, rate of increase in percent, how can I calculate the population doubling time?
asked by Karen