# Questions Asked onOctober 14, 2006

1. ## Linear Approximation

Use linear approximation, i.e. the tangent line, to approximate 1/0.104 as follows: Let f(x)=1/x and find the equation of the tangent line to f(x) at a "nice" point near 0.104 . Then use this to approximate 1/0.104 . L(x)=f(a)+f'(a)(x-a)...i think. You're

2. ## Rf values

Question: Consider a sample that is a mixture composed of biphenyl, benzoic acid and benzyl alcohol. The sample is spotted on a TLC plate and developed in a dichloromethane-cyclobutane solvent mixture. Predict the relative Rf values for the three

3. ## math - probability

Albino rats used to study the hormonal regulation of metabolic pathway are injected with a drug that inhibits body synthesis of protein. Usually, 4 out of 20 rats die from the drug before the experiment is over. a) If 10 animals are treated with the drug,

4. ## Algebra111111!!!

Choose the ordered pair that is a solution to the system of equations. -x + y = 12 x + 2y = 3 a. (7, 5) b. (5, -7) c. (-7, 5) d. (-7, -5) e. none of the above This question wants you to find the point of intersection of the two lines, provided they're not

5. ## Calculus

Suppose that you can calculate the derivative of a function using the formula f(x) = 2f(x) + 4x. If the output value of the function at x=4 is 3 estimate the value of the function at 4.012. Linear Approximation right? I'm not seeing an f'(x) anywhere. Can

6. ## Accounting

What would the journal entry be for this transaction? sent a reminder to Gomez Co to pay the fee for services recorded on November 8 There would be no entry since a transaction did not take place.

7. ## Slopes

Given y = 2x – 4, choose the statement that accurately describes this line. The slope is 2 and the y intercept is 4. The slope is 2 and the y intercept is -4. The slope is 4 and the y intercept is 2. The slope is -4 and they y intercept is 2. The

8. ## History-Armenian Genocide

why is the Armenian genocide significant? can the international community prevent future genocide from happening? This site gives some excellent information. http://www.armenian-genocide.org/genocidefaq.html To consider the second part of the question, you

9. ## Solvents

Question: Each of the solvents given should effectively separate one of following mixtures by TLC. Match the appropriate solvent with the mixture that you would expect to separate well with that solvent. Select your solvent from the following: hexane,

10. ## Difference?

What is the difference between these two questions? They look the same to me, like they're asking the same thing. Not likely. Question: A student spots an unknown sample on a TLC plate and develops it in dichloromethane solvent. Only one spot, for which

11. ## TLC error correction

Question: Consider the following errors that could be made when running TLC. Indicate what should be done to correct the error. A. A two-component mixture containing 1-octene and 1,4-dimethylbenzene gave only one spot with an Rf value of 0.95. The solvent

12. ## Algebra22222!!!

Choose the ordered pair that is a solution to the system of equations. 3x - y = 10 -x + y = -4 (3, -7) (-1, 3) (3, -1) (3, 1) Follow the example I gave in your previous question. I'm not going to do all of them. You want to eliminate one of the variable

13. ## Algebra333333!!!

Choose the ordered pair that is a solution to the system of equations. 3x - y = 9 2x + y = 6 (3,0) (3,-18) (3,-1) (3,1) Once again add the two equations to get 5x = 15 Solve for x and substitute into either equation to find y.

14. ## Poetry, part 2

Hopkin's use of "seared", "bleared", and "smearded" is an example of You are probably looking for a grammatical term....to which my mind is blank. But in poetry, rhythm usually sets the poem style, the use of seared, bleared, and smeared is the poetic

15. ## microeconomics

John purchases 12 CDs and 15 cheese pizzas in a typical year. If cheese pizzas are inferior goods, would Mike be indifferent between receiving a \$30 gift certificate at a local music store and \$30 in cash? Please explain. Thanks

16. ## Physical Chemistry HELP!!!!!

A solution of the sugar mannitol ( molar mass 182.2 g/mol ) is prepared by adding 54.66 g of mannitol to 1.000 kg of water. The vapor pressure of pure liquid water is 17.54 torr at 20o C. Mannitol is nonvolatile and does not ionize in aqueous solution. a.)

17. ## Algebra1

Complete this sentence with the correct choice: y = 4 is a horizontal line with ________. undefined slope. a slope of 4. a slope of 0. None of the above will make a true statement. Draw a line through y = 4 and parallel to the x axis. Now, what slope is

18. ## HELP!!!!!! ENGLISH

We thought it was__________ should go. he whom him whom he who him who The supply of tablets (is, are) low. he who... (he should go, not him should go) The supply is low

19. ## Japanese

I am studying Japanese and I needed to know how to say these terms: 1.hello 2.bye 3.My name is.. 4.Lier 5.Shut Up!! Sorry it's just that today is my first day in Japanese class. Thank you for using the Jiskha Homework Help Forum. Here are the expressions

20. ## spanish

how do you say pool in spanish? piscina = pool charca is pool If you are talking about "pool" as the game... it is billar If you are talking about swimming pool, it is piscina piscina Thank you for using the Jiskha Homework Help Forum. First of all, it's

21. ## Algebra3!!!!

How would you would graph the linear equation y = -2x + 6? First plot the point (6,0) and then count up two and to the right 1. First plot the point (6,0) and then count down two and to the right 1 First plot the point (0,6) and then count up two and to

22. ## Algebra 2345678!!

Solve the system of equations using the Addition method. 2a + 3b = -1 3a + 5b = -2 The addition method tells you to find common multiples of a coefficient, then add the equations together to eliminate a variable. If you multiply the first equation by 3 and

23. ## History

Hi, I'm doing a History Project on the First Emperor of China, Qin Shihuangdi, and wondered if anyone could tell me when he was born and when he died? I have been on lots of websites but the dates are all in the wrong order, making it look like he died

24. ## english -I NEED HELP AGAIN

Almost _________ work would be better than ___________. anyone's hers anyone's her's anyones hers anyones' hers' When a possessive noun is used, (mother's, sister's, anyone's) use an apostrophe. When a possessive pronoun is used, (hers, his, its) an

25. ## math

If you swim 2 miles in 40 minutes, what is the unit rate? If you use distance=rate*time, then rate =distance/time So 2mi/40min or simplifying to 1 mi per 20min Can you convert this to mile per hour?

Which of the following sentences DOES NOT illustrate subject- verb agreement. 1.Each of the players need a locker. 2.He said that the computer is broken. 3.There go the members of the cast. 4.We knew that rivers flow south. 1.Each of the players need a

27. ## To regular teachers

In trying to help Margie with algebra, it required intensive, step-by-step process. It would certainly be alot more efficient if there were a way to provide instant messaging in a situation like this. Is there a way via your site to communicate with

The measured osmotic pressure of seawater is 25 atm at 273K. a.) What is the activity of water in seawater at 273 K? Take the partial molar volume of water in seawater to be 0.018 M-1. b.) The vapor pressure of pure water at 273 K is 4.6 torr. What is the

29. ## MATH - probability #2

A rescue squad spokesperson claims that the squad receives an average of 3 calls per hour. If at most 6 calls were received over a 5-hour period, would you suspect that the spokesperson was overestimating the average number of calls received per hour?

30. ## Calculus

A plane flying with a constant speed of 14 km/min passes over a ground radar station at an altitude of 7 km and climbs at an angle of 45 degrees. At what rate, in km/min is the distance from the plane to the radar station increasing 2 minutes later? I know

31. ## Calculus

How do I graph sin and cosin example: graph y=-4sin(x + 3.14) Your function is the sin function shifted by pi units to the left. You need to study the sin function and know how to graph it. There should be a picture of it in your text, it's a very commonly

33. ## PLz!!!My teacher gave me 10 more min.so plz help!!

I really need help!! My advice is to spend some time reading our answers and less time pleading for more help. The time you take to type a plea for more help can be used for following our suggestions. DrBob222 is right. Graphing is very important, and we

34. ## English subect/verb agreement

Which of the following sentences does illustrate subject-verb agreement? 1. Tricia,as well as all her colleagues, are being trained on new equipment. 2. Here comes your teachers. 3. That box of two dozen eggs need to be put in the refrigerator. 4. The

35. ## Algebra

What would be the missing piece of information given the following information: Find the slope of the line that passes through the points (2, 6) and (4, 10). m = ? a. 2 b.6 c. 1 d. 9 I think it is c. Remeber the definition of a slope. It is the change in y

36. ## Related Rates

Water is leaking out of an inverted conical tank at a rate of 500 cubic centimeters per min at the same time that water is being pumped into the tank at a constant rate. The tank has height 10 meters and the diameter at the top is 4.5 meters. If the water

37. ## math

i need to find facts on the number 4 What kind of facts? The number 4 immediately precedes the number 5 and is the first whole number after 3. Then you can make up a bunch of stuff using 4; i.e, 96 + 4 = 100 etc. If this is not the right direction, please

38. ## MSDS sheet

Does anyone know where I can get a free MSDS sheet WITHOUT giving my complete biography? I don't mind an email address and even a name but land mail address, phone number, number of adults in household, cars in household, fax number, and other garbage is

39. ## Algebra

What would be the missing piece of information given the following information: Find the slope of the line that passes through the points (2, 6) and (4, 10). m = ? a. 2 b.6 c. 1 d. 9 I think it is c. m = change in y over change in x m= (10 - 6)/(4 - 2)

40. ## pigskin geography

Here is the question, The Wonders of American stamp series informs us the American bullfrog is the largest frog,and perhaps the loudest. Their bodies grow to what size?___inches. Their calls can be heard how far away ____miles. I got the answer to the

41. ## economics

Thank you so much economyst but i do'nt understand the ans for part (b) The demand function for a well known economics textbook is: P = 100 - .005Q The publisher must pay \$20 per book in printing and distribution costs and, in addition, it must pay the

42. ## Algebra ??

What would be the missing piece of information given the following information: Find the equation of the line that passes through the points (2, 6) and (4, 10). y = 2x + ? a. 4 b. 2 c. 7 d. 5 OK. let's take this step by step. y = 2x + ? Remember the

43. ## ENGLISH HELP

Half the apples_________ on the floor, but some of them ________ on the table. are, are is is is are, are is We could neet the man who _________ all loans if the manager _________ here. approves, was approve, were approve, was approves, were Half the

44. ## economics

Q: The market demand and supply curves for an agricultural product are as follows: Qd = 4500-250P and Qs = 200p where quantities are in thousands of bushels per annum and price is in dollars per bushel. the government wishes to acheive a higher point on

45. ## Graphs

x + 2y = -4 How do I graph this?can you please help? Assign values to x and solve for y or assign values to y and solve for x. Makre a table. X........Y 0........-2 2........-3 etc. I almost always assign a value of zero to Y, too, and calculate X. Y = 0;

46. ## Research Paper

I writing a paper on teenage driving should the age be 18? I need help on my methodology page What is a methodology page? I don't know if this helps but check on google The methodology is the method you will you to solve the problem. In this case, how you

47. ## social studies

I need names of twenty famous people in world history, who are not americans. Here is web site that will not get 20 but will get close. The disadvantage is that all of them are from or lived in a small town AND it was years ago. You may want newer faces.

48. ## Calculus

How do you find Altitude and slope slope is the derivative of a function: for ex. if you have f(x)=x^2 + x, at point (1,2) f'(x)=2x+1 your slope is 2(1) + 1 = 3 =m to find the equation is y-y1=m(x-x1) so you have: y-2=3(x-1) gives you: 3x-1 is your

49. ## english -I NEED HELP AGAIN

Almost _________ work would be better than ___________. anyone's hers anyone's her's anyones hers anyones' hers' Anyone is singular and needs to show possession -- so anyone's work. . . The next pronoun is also singular and possessive. But, hers shows

50. ## DanH-Algebra 1

Solve the system of equations using the Addition method. 2a + 3b = -1 3a + 5b = -2 Margie: Roger's answer below is correct. If you don't understand it, please try and tell us what you don't understand. He makes it sound so strange can you ask him to

51. ## English

Hi, I was wondering if somebody could help me understand this writing prompt. I'm not sure If I'm supposed to talk about the characters' different points of view in some goals toward achieving sucess or if I'm supposed to tell what each characters' goals

52. ## science

what product is left when dilute sulphuric acid and zinc go together? (Broken Link Removed) dissolved in water, of course, the water that was carrying the H2SO4.

53. ## Slope

The slope of the line that passes through (2, -4) and (-6, 2) is: -4/3 3/2 1/4 -3/4 Remember, the slope is change in y divided by change in x, so, a slope of 3/2 for example, means that the line goes "up 3 and over 2"

54. ## Algebra2?????

What would be the missing piece of information given the following information: Find the equation of the line that passes through the points (3, -1) and (2, 5). y = -6x + ? 17 15 20 11 Good. Try this one just like we did the last one...let me know how you

55. ## science

what is the volume of 10 galons???? That's easy. It has a volume of 10 gallons. Do you want it converted to another unit?

56. ## Graphs 2

x = -3 y = 2 how about this?how do i graph it? Is this a single point? no it says that Graph numbers 4 and 5 on the same square of graph paper. Make sure you label each line. x = -3 y = 2 Others may be able to answer this better than I; however, x = -3

57. ## DanH-- I NEED ENGLISH HELP

Almost_________ work would be better than___________. anyone's hers anyone's her's anyones hers anyones' hers' Please check my previous answer.

58. ## graphs

x = -3 y = 2 how about this?how do i graph it? x = -3. This means, no matter what y is, x is -3. So, it's a vertical line at x = -3.

59. ## graphs2

x + 2y = -4 How do I graph this?can you please help? I answered this below. If you are having trouble you must tell us exactly what the problem is. What don't you understand about taking the next step? that is the problem.I got the other one but how do i

60. ## Government (Jury)

I was wondering why we have a jury system for courts? Please respond. http://www.19thcircuitcourt.state.il.us/bkshelf/resource/origin.htm =) Thanks.

61. ## physics

what site can i find physics formulas? http://muweb.millersville.edu/~jdooley/formulas/TOPLIST/TOPLIST.HTM

62. ## science

I have to have three alternative ways to maximize food production in a developing country I am going to try and do Haiti They have had some major environment problem like soil erosion and deforestation I feel the food production can be helped if they had a