# Questions Asked onJuly 13, 2009

1. ## Math

Stephanie can clean a pool in 1 hour , and Mark can clean the same pool in 1.5 hours. If the rate at which they work together is the sum of their rates working separately, how many minutes should they need to clean the pool if they work together? (1 hr=60

2. ## algebra

perform operatiion -2a²/ * 2a+2/ 3a² 15a³

3. ## Physics 20

A 2.50-kg Pendulum is attatched to a string 11.4m stringis pulled aside until it is.386m above its lowest position and released. The pendulum is designed to emit sound waves at a frequency of 440 Hz; However, as it swings toward and away from an observer,

4. ## Communication Theory

An objective theory is good in the eyes of an interpretive researcher if the explanation of communication behavior leads to further understanding of _________?

5. ## CHEMISTRY HELP!

(1) A beaker with 165 mL of an acetic acid buffer with a pH of 5.00 is sitting on a bench top. The total molarity of the acid and conjugate base in the buffer is 0.100M. A student adds 7.20mL of a 0.320M HCl solution to the beaker. How much will the pH

6. ## chemistry- some help plzz totally lost on this one

Imagine that you are in chemistry lab and need to make 1.00 L of a solution with a pH of 2.70. You have in front of you * 100 mL of 7.00×10−2 M HCl * 100 mL of 5.00×10−2 M NaOH, and * plenty of distilled water. You start to add HCl to a beaker of

7. ## Math

Lear, Inc., has \$800,000 in current assets, \$350,000 of which are considered permanent current assets. In addition, the firm has \$600,000 invested in fixed assets. a. Lear wishes to finance all fixed assets and half of its permanent current assets with

8. ## Grammar

Are these sentence's punctuated correctly? Differential diagnoses include: Diabetes, adult-onset Cholelithiasis, acute Endocarditis, subacute This year she'll have a breast augmentation, and next year she will have an abdominoplasty. It should snow in the

9. ## chemistry help!!

A beaker with 195 mL of an acetic acid buffer with a pH of 5.00 is sitting on a benchtop. The total molarity of acid and conjugate base in this buffer is 0.100 M. A student adds 8.20 mL of a 0.260 it M HCl solution to the beaker. How much will the pH

10. ## science

Which one of the following is a source of chemical weathering? A. The abrasion of running water B. Water freezing in the cracks of exposed rocks C. The effects of acid from decaying animals D. The growth of mosses in the cracks of rocks i think its b or c

11. ## Economics

I am having problems figuring out how to set this problem up. Gamma Corporation, one of the firms that retains you as a financial analyst, is considering buying out Beta Corporation, a small manufacturing firm that is now barely operating at a profit. You

12. ## Chemistry

What is the molecular formula of water?

13. ## writing

In what ways are purpose, audience,tone and content different for interpersonal and business communication

14. ## English

1. The balls under the desk are some. 2. There are some balls on the desk. (#2 is correct, right? What about #1? Is it OK?)

15. ## ARt

Different colors can give different feelings. Would you let me know good websites about that?

16. ## tenison

square root for 8

17. ## Communication Theory

Aristotle divided persuasion into three kinds of strategies called________.? These three where ___ ___ ____???

18. ## Communication Studies

An objective theory is good in the eyes of an interpretive researcher if the explanation of communication behavior leads to further understanding of ________________. ?

19. ## medical billing

Differentiate between the official coding guidelines for using V codes in an inpatient and outpatient setting.

20. ## billing and coding

Explain the importance of a fee schedule and the factors it's based on.

21. ## billing and coding

explain how evaluation and management codes are grouped

22. ## medical billing and coding

discuss coding for obstetrics, including items covered by the golbal fee for anterpartum and postpartum periods of normal pregnancy

23. ## English Comp.

Please check for errors. If there are any, please state them at the end of my essay. Please help me out because it is do at 3 today. Neat vs. Sloppy Many people will consider themselves a very neat person, but are they really neat or sloppy? Often, people

24. ## Grammar

Are these sentence's correctly punctuated? The motor vehicle accident, however, was not the patient's fault. Dr. Jones is an excellent surgeon, but does not have a good bedside manner. She was tried on various antibiotics, and an infectious disease

25. ## Grammar

Are these sentence's punctuated correctly? The new heart clinic is located at 555 NW First Street, Seattle Washington 98104. Transcription should be interesting, educational, always challenging, and, most of all, fun. Additionally, anesthesia was given by

26. ## Grammar

Are these sentence's punctuated correctly? Depression, often a genetic disorder, can be safely treated with medication. Infection, for example, can be a complication of surgery. Having been up late last night, I may not make our lunch date.

27. ## phyilosophy

happiness where spiritual traditions are in conflict with science and contemporary life.

28. ## Math

A worker tearing down a barn uses a crowbar 4feet long with the shorter end being 2 inches from the fulcrum. If the worker can exert a force of 150lbs at one end of the crowbar, how great a force can be exerted at the other end? (Note the differences in

29. ## geometry

Find the volume of a rectangular solid with the following dimensions: 2.3 cm x 4.6 cm x 7.8 cm

30. ## English

Can Someone comment on how well i did my my poem please. Drive No where to go Nothing to see, I just want to drive, Drive away, you and me. We don’t have to go fast we can go slow there is no first or last, as long as you go. My future with you I have

31. ## Health Care

is dazzlewhite a good thing to use to whiten your teeth?

32. ## Health Care

how do you use baking soda and salt to whiten your teeth. if you can then please do list some directions, thanks

33. ## Environmental Management

A. The 95% confidence interval is: (a) Larger than the 99% confidence interval (b) Smaller than the 99% confidence interval (c) The same as the 99% confidence interval

34. ## math/urgent

PLEASE tell me how you are supposed to come to the answer to this. and what is the answer: a number x is y more than a number y times x i'm a little confused, and i have to teach this to a student. thanks a lot

35. ## English

What is the final lesson in "The Lost Horse" ?

36. ## algebra

Reduce to simplest terms,rational expression -2x-8 ______ x^2+2x-8

37. ## algebra

Perform operation 3/ * 2a+2/ a²+a 6

38. ## MATH

chris buys a chocolate bar and a pack of gum for 1.75 if the chocolate bar costs .25 more than the pack of gum how much does the pack of gum costs?

39. ## Essay writing

what makes an authors argument compeling

40. ## AP Economics

Describe why every decision involves trade-off. Can you please explain it to me.I don't get it!!!

41. ## MATH

Three integers have a sum of 7 and a product of 0. If the difference of the greatest number and the least number is 11, then the least of these numbers is?

42. ## algebra

Build each rational expression into an equivalent rational expression with the indicated denominator (-7yt)/(3x) =(?)/(18xyt)

43. ## economics

explain how the principle of diminishing marginal utility is related to the downward sloping demand curve?

44. ## economics

describe the difference between the income effect and the substitution effect

45. ## algebra

Worker efficiency. In a study of worker efficiency at Wong Laboratories it was found that the number of components assembled per hour by the average worker t hours after starting work could be modeled by the formula N(t)=-3t+23t^2+8t

46. ## Man for All Seasons

Hi!!! Does anyone know a modern example of the common man. HE has to be ALIVE!!! Thanks

47. ## english

please help me analyze the tone of Another Writer's Beginnings by Sasaki. is it honest or sentimental? provide reasons.

48. ## Algebra II

Factor Completely: x^2-2x-99

49. ## MATH

Admission to a museum is \$10 for each adult and \$5 for each child. If a group oh 30 people pays a total of \$175 in admission how many adults are in the group?

50. ## science

What occurs in wind erosion? A. Wet soil is transported away. B. Dry soil is transported away. C. Small rocks are left behind. D. Large rocks are left behind. is it b or d

51. ## algebra

Perform the indicated operation (-2a²)/(3a²) X (20a)/(15a³)

52. ## English- Man for all Seasons

Heyy! well my question is in regards to man for all seasons a play by robert bolt. we are asked to identify a living person that resembles the "common man" character. the common man resembles the masses, he has a passive attitude of the world, and refuses

53. ## math

1 yard is how many feet

54. ## light

I know that when a light ray refracts towards the normal, it means that it's perpendicular. But what is it refracting towards the normal with respect to?

55. ## algebra

correction to previous problem should read: (w^2-1)/(w-1) x (w-1)/(w^2+2w+1)

56. ## algebra

Find the LCD for the given rational expressions, and convert each rational expression into an equivalent rational expression with the LCD as the denominator. 4/x-y , 5/2y-2x

57. ## algebra

Perform the indicated operation (w^2-1)/(w-1) x (w^2+2w+1)

58. ## global

What is carthage?

59. ## algebra

Solve each equation. Watch for extraneous solutions 5/y-3 = y+7/2y-6 +1

While Mr And Mrs Lowell was on a cruiseship vactioning their cabin was broken into and valueables were stolen they were looked in the bathroom while this was happening Mr Lowell sufferd a heart at?

61. ## algebra

Solve the equation -3/x = x/-3

62. ## algebra

what is the negative reciprocal of -7/3

63. ## sociology

what are the advantages and disadvantages of explicitly grounding a legal system in a particular religious tradition? Should the united states attempt t integrate christianity into its criminal justice system, as some conservatives recommend?

64. ## chemistry

What is the pH of the solution created by combining 0.80 mL of the 0.10 M NaOH(aq)with 8.00 mL of the 0.10 M HC2H3O2(aq)?

65. ## Algebra

solve the equation x/3 = 4/x+1

66. ## sociology

The iranian legal system is more focused on protecting the rights of crime victims ( and their relatives) than is the law in the united states. Should our courts move in this direction?

67. ## SCI 275

The Population Size explain the four factors that produce changes in population size. Which factors are affecting the population size in the video? What do you predict will happen to the nutria population ater all the land is depleted of the nutrias' food

68. ## algebra

Reduce each rational expression to lowest terms. Assume that the variables represent only numbers for which the denominators are nonzero. a^2-b^2/a-b

69. ## algebra

Simplify each complex fraction. Reduce each answer to lowest terms. ab+b^2/4ab^ 5 _______________ a+b/6a^2b^2

70. ## algebra

Reduce each rational expression to lowest terms. Assume that the variables represent only numbers for which the denominators are nonzero. 4x^2/2x^9

71. ## Math

Solve: (3-2) - (2-3)

72. ## math

Estimate the drop in the Dow Jones Industrial Average if it falls 5% from its value of 10,637

73. ## math

How much interest is earned from a \$3,000 investment at an annual rate of 4% compounded quarterly for 2 years?

74. ## math

juana threw five darts at a dartboard. the possible scores on a target were 2,4,6,8 and 10. each dart hit the target. which of these total score can be identified as "not possible": 38,23,58,30,42,31,26,6,14, or 15?

75. ## math

Solve : 9x^2 over 144 - 4 over 25

76. ## chemistry

your experiment yielded 50kg of NaCl (D= 4.5g/ml. What volume of your yield is this in liters?

77. ## sociology

why is the united states is the only remaining postmodern nation that retains the death penalty?

78. ## English

Does anyone know a site where, I can get a summary for The Magus by John Fowles? I need help in describing 3 settings, inciting moment, 3 conflicts/crises, climax, falling action, 5 themes, and the ending.

79. ## english

I need to find a good quote from Act 4 in the novel The Crucible that is very important.

80. ## sociology

if united states support capital punishment would be willing t abandon it if convicted murderers could be sentenced to life imprisonment with absolutely no chance of parole? similarly if united states oppose the death penalty would they change their

81. ## economics

distinguish between the individual supply curve and the market supply curve

83. ## history

How did the U.S. economy change after WWII ended compared to what it had been like during the war? Use specific examples of what people were able to have and to do, and what it must have felt like after the scarcity of their wartime experience.