# Questions Asked onJune 3, 2011

1. ## Physics!

The two stars in a certain binary star system move in circular orbits. The first star, Alpha, has an orbital speed of 36 km/s. The second star, Beta, has an orbital speed of 12 km/s. The orbital period is 137 d. a) What is the mass of the star alpha? b)

2. ## statistics

It is claimed that an automobile is driven on the average more than 20,000 kilometers per year. Random sample of 10 automobile owners are asked to keep a record of the kilometers they travel. If the sample mean and standard deviation of automobile driven

3. ## TRIGO

Find the minimum value of 9Tan^2x + 4Cot^2x.

4. ## math

You receive an invoice for \$565.00 with terms 3/10, net 30. If you pay it immediately, how much will you pay? A. \$548.05 B. \$551.25 C. \$558.05 D. \$559.95

5. ## peresonal finance

how does education plays a critical role in financial success

6. ## Physics - pulley

A construction crew pulls up an 87.5-kg load using a rope thrown over a pulley and pulled by an electric motor. They lift the load 15.5 m and it arrives with a speed of 15.6 m/s having started from rest. Assume that acceleration was not constant. I have

7. ## maths

a trapezium with its parallel sides in the ratio16:5,is cut from a rectangle whose sides measure 63m &5m respectively. the area of the trapezium is 4/15 of the rectangle .find the lengths of the parallel sides of the trapezium.

8. ## Physics

In the radioactive formula, 235 U → 235 Np = X, what does X represent 92 93 A. An alpha Particle B. A positron C. An electron D. A gamma ray Please help ASAP!!! Thank you very much!!

9. ## Physics

Please help I've attempted this problem various ways and I can't seem to get the correct answer. A 69.0 kg person throws a 0.0410 kg snowball forward with a ground speed of 35.0 m/s. A second person, with a mass of 60.0 kg, catches the snowball. Both

10. ## Composition

Can you please check this for any grammatical errors? Thank you for your help. Having been out of school for 15 years, I seem to have forgotten the fundamentals of grammar. Taking Composition and Communication 155 has helped me gain a better understanding

11. ## Chemistry

Redox reaction of cl2 --> cl ion and clo2- I split it up into two half reactions cl2-->2cl- and cl2-->2clo2-

12. ## Math

What are the steps to getting the tan of 345degree, without the use of a calculator?

13. ## chemistry

a sample of a radioisotope had a mass of 100.0 grams. After exactly 24 days, 6.25 grams remained. The half life of the isotope is _________

14. ## Physics

Find the final velocity of the two balls if the ball with velocity v2i = -19.5 cm/s has a mass equal to half that of the ball with initial velocity v1i = +26.8 cm/s. PLEASE HELP IVE TRIED EVERYTHING!!!

15. ## statistics

A certain geneticist is interested in the proportion of males and females in the population that have a certain minor blood disorder. In a random sample of 1500 males, 75 are found to have disorder, whereas 80 of 2000 females appear to have disorder. Find

16. ## statistics

Among the 500 first year students of college, 270 students study computer science, 345 students study mathematics, and 175 students study both computer science and mathematics. If one student is selected at random, find the probability that he did not take

17. ## acc 121

Bob is investing in a partnership with Andy. Bob contributes as part of his initial investment, Accounts Receivable of \$80,000; an Allowance for Doubtful Accounts of \$12,000; and \$8,000 cash. The entry that the partnership makes to record Bob's initial

18. ## Psy

you see with your brain not with your eyes Defend this statement with reference to the Young-Helmholtz theory of color vision and the optic disc

19. ## Physics

Please help I've attempted this problem various ways and I can't seem to get the correct answer. A 69.0 kg person throws a 0.0410 kg snowball forward with a ground speed of 35.0 m/s. A second person, with a mass of 60.0 kg, catches the snowball. Both

20. ## Geometry

A 10-meter ladder, is resting against the top of a building. If the bottom of the ladder is 4 meters from the building, how many meters tall is the building

21. ## statistics

5. The table below shows Psychology exam scores, Statistics Exam scores, and IQ scores for a random sample of students. What can you observe in the relationship between IQ and psychology, psychology and statistics, and IQ and statistics? Using a

22. ## Algebra

The average of two test scores is 79. If one test score is eleven less than the other, what are the two test scores?

23. ## English

Can you please check these sentences for me, please? Thank you very much. 1) The word Victorian derives from Queen Victoria, who ruled constitutionally for more than half a century, from 1837 to 1901. 2) The Victoria Age was a complex area characterized,

24. ## Physics

What daughter isotopes are produced when a neutron combines with a nucleus of 235/92 U? Assume that three neutrons are also produced in the reaction. A. 140/56 Ba, 95/36 Kr B. 142/56 Ba, 93/36 Kr C. 140/56 Ba, 93/36 Kr D. 141/56 Ba, 94/36 Kr Please help.

25. ## Statistics

Under what circumstances does the sampling distribution of the proportion approximately follow the normal distribution?

26. ## chemistry

When performing a titration, 23.65 mL of 1.25 M calcium carbonste was used to neutralize 9.68 mL of HCl. What is the concentration of the HCl solution? (Create a balanced equation first)

27. ## busness math

two vendors are competing for your busness.vendor A is offering you a 6/8/12 discount and vendor B is offering a discount of 7/9/10.what is the single equivalent discount being offered by each vendor(round to the nearest hundredth percent)

28. ## bio 151

Describe where EPSP is produced, and explain how it is produced. What is its significance?

You can't qualify for a Home Beautiful credit card until you are 18 years old." Indicate the alternative that both correctly evaluates the sentence and correctly explains the reason for the evaluation. (Points: 5) Good you-attitude because it begins with

30. ## Math

The segment that bisects an angle of the triangle and has one endpoint at a vertex of the triangle and the other endpoint at another point on the triangle is called the _________. The segment that has one endpoint at one of the vertices of a triangle and

31. ## accounting

Required a. Determine the gross profit margin for each product produced based on the ABC data [(selling price 2 ABC cost per foot) 3 feet produced]. b. Determine the gross profit margin for each product produced based on the traditional costing data

32. ## Trigonometry

Find all solutions on the interval (0,2pi): 2-2cos^2=sinx+1

33. ## arithmetic

If a:b:c=2:1:3 and 2a-3b+c=8 then a+b+c is

34. ## statistics

A population of scores forms a normal distribution with a mean of µ = 40 and a standard deviation of SD = 12. a. What is the probability of randomly selecting a score less than X = 34?

35. ## English

Can you check this sentence, it's really urgent. Before sending you details of my credit card, I would like you to confirm the offer made to me by Mr Smith, your Reservation Executive.

36. ## first aid

Two thin rectangular sheets (0.09 m 0.54 m) are identical. In the first sheet the axis of rotation lies along the 0.09-m side, and in the second it lies along the 0.54-m side. The same torque is applied to each sheet. The first sheet, starting from rest,

37. ## Algebra

Can someone check my answers? 1. 3/c - 4/3c = 5/3c 2. -3t/t-4 - 2t+4/4-t = -2t-4/t-4 3. z/3z^2 + 4/7z = 19/21z 4. 5x/2x-6 + x+2/3-x = 4x-2/2x-6 or 2(2x-1)/2(x-3)

38. ## college algebra

How would you factor th trinomial 42h^2-29hj-5j^2

39. ## English

In the book To Kill A Mockingbird, What is the most important life lesson that Jem and/or Scout learn?

40. ## Physics

In the radioactive formula 235 U → 235 Np + X, what does X represent 92 93 A. An Alpha Particle B. A positron C. An electron D. A gamma ray Please help ASAP!!! Thank you :D

41. ## math

what % of \$720.00 equals \$157.00

42. ## maths

what does 4.8828125 round to?

43. ## math

a 31'' diameter circle has an area of _ sq ft. ???

44. ## math

a 31'' diameter circle has an are of _ sq ft.????

45. ## algebra

express as an equivalant expression that is a single logarithmic and simplfy if poissible loga(2x+10)-loga(x^2-25)

46. ## Algebra

The speed of a passenger train is 20 mph faster than the speed of a freight train. The passenger train travels 250 miles in the same time it takes the freight train to travel 150 miles. find the speed of each train.

47. ## maths year 7

can u give me some help on recipicol fractions?

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48. ## Math - Domain of Composite function

Find the domain of the composite function f ₒ g . Please show all of your work. f(x) = √x; g(x) = 2x + 12

49. ## Chemistry

The ksp of aluminum hydroxide is 5.6e-17. What is the concentration of hydroxide in a saturated solution?

What are three examples of bias in business writing? Identify two methods you consider important to follow in reducing bias in business writing

As the new finacial controller of a meduim-sized manufacturing company, you quickly need to assess the company's finanical position. Explain the process you would work through and the documents you would review. also state which of you new colleagues you

52. ## Chemistry

2 L(g) + An(aq) + 3 Gw(s) + 2 I(g) 2 Gd(aq) + 3 A(g) + Y(s) What direction would the reaction shift if the volume of the container was increased? left or right? What direction would the direction shift if some additional water was added? left or right? and

53. ## algebra

prove (a^2-b^2)^3+(b^2-c^2)^3+(c^2-a^2)^3=3(a^2-b^2)(b^2-c^2)(c^2-a^2)

54. ## Physics

A construction crew pulls up an 87.5 kg load using a rope thrown over a pulley and pulled by an electric motor. They lift the load 15.5 m and it arrives with a speed of 15.6 m.s having started from rest. Assume that acceleration was not constant. How much

55. ## runways

IF THE LENGTH OF THE RUNWAY IS 6 INCHES, WHAT IS THE PERIMETER?

56. ## Physics

A mass is hanging on the end of a spring and oscillating up and down. There are three forces acting on the mass, the force of the spring, the force of gravity, and the force of air resistance. Which of these forces can be associated with potential energy

57. ## geometry B

x square root of 2= 36 round to the nearest tenth or whole number

58. ## statistics

A sample of 25 men has a mean weight of 65kg with standard deviation of 8kg. Suppose that the weight of men follows normal distribution with a standard deviation of 10kg. Find a 95% confidence interval for the population mean μ.

59. ## u.s history

in what movement does participate james weldon johnson and zora neale

60. ## Social Studies KKK

How did the federal government help to reduce the klans's influence in the south?

61. ## Physics

Imagine that your car is powered by a fusion engine in which the following reaction occurs. 3*deuterium--->helium + hydrogen + neutron The masses are (2.0141 u), (4.0026 u), (1.0078 u) and (1.0087 u). The engine uses 8.1 10-6 kg of deuterium fuel. If one

62. ## biography

Hi, im susan. I am currently in english honors and have to do a biography on someone i admire. The person i admire most right now is jeffree star. I have never really wrote a biography on someone. And could use some help. I don't know what to include about

63. ## school fee Question

on my school fee sheet it says i must pay 90.00.. but i don't know what the student activity fee is for, it's 10.00. Can you pleese tell me what the student activity fee is for?

can you explain pie to me i'm in y7 and want to get ahead!

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65. ## algebra

rewrite as an equivalent loganthmic e-^2=0.1353

66. ## Community Nursing

I need helpl in determining how to complete this paper Neighborhood hospital ED sees critical capacities by By: G. Johnson

67. ## us history

I need to do a thesis on a late-present American history about anything. I can't think of something that will be easy and easily researched. Any ideas?

68. ## Algebra

Use the five steps for problem solving to answer the following question. Please show all of your work. Marissa has budgeted \$65 for her monthly cell phone expense. If her plan with her wireless provider is \$15 plus \$0.25 for each minute, how many minutes

69. ## physics

A bubble of gas, diameter 2 mm, is trapped in a container of liquid at normal atmospheric pressure (1 × 10^5 Pa) and a temperature of 25 °C. The container is opened on board an aircraft where the temperature is 22 °C and the surrounding pressure is

70. ## life orientation

in 10-15 line critically discuse 5 ways in which the human or environmental problem impact on the community.provide relevant sources to support claims

71. ## science

can you live off of 10.5 ml of water

72. ## Chemistry

What happens to the rate of a reaction if the temperature is decreased and why?

73. ## chemistry

222g of oxygen contains how many moles?

74. ## science

what problems are acid precipition associated with

75. ## BIO

what structures of the inner ear are activated by a somersault? A cartwheel? By fast acceleration in a race car?

76. ## algebra

A home's backyard drops 9 ft over a horizontal distance of 124 feet. Find the slope of this back yard. Round your answer to two demical places

77. ## English

Can you please check these few sentences, please? Thank you. 1) I just wanted to know why two meals are not included in your rate and how much your hotel charges for a dinner. 2) Would you please be so kind and send me the details of your offer again?

78. ## logic

Catherine goes to her local movie theater only to see romantic comedies. Since Catherine did not go to the movies yesterday, there is not a romantic comedy playing at her local theater.

79. ## algebra 1

which expression is equal to 6(9+2)?

80. ## statistics

A certain defect (D) is present in about 1 out of 1000 cars during production [P(D)=0.001], and a program of testing is to be carried out using a detection device which gives a positive reading with probability 0.99 for a defective car [P(+/D)=0.99] and

81. ## Media & american culture

I need help with a thesis sentence about music stating how & why it is more than an important piece of entertainment

82. ## statistics

If 50% of the automobiles sold by an agency for a certain car are equipped with diesel engines, let X represent the number of diesel models among the next 5 cars sold by this agency, write the probability distribution of X.

83. ## Physics

An object of mass m travels halfway around a circle at a constant speed v. The magnitude of the total work done on the object by the net force acting on it (not counting starting and stopping at the beginning and end of the path) is a. equal to mv b. equal

84. ## Physics HELP!!

What daughter isotopes are produced when a neutron combines with a nucleus of 235/92 U? Assume that three neutrons are also produced in the reaction. A. 140/56 Ba, 95/36 Kr B. 142/56 Ba, 93/36 Kr C. 140/56 Ba, 93/36 Kr D. 141/56 Ba, 94/36 Kr Please help.

85. ## busiess communication

. In which of the following situations would using the word "you" typically NOT be appropriate? (Points: 5) When you must inform a subordinate that she has inadvertently made a costly error When you must inform a subordinate that you have passed her idea

86. ## math

is 395 divisible by 3 and 5

87. ## science

if i push a marble with 1 whatever you measure force with! How fast will it go and how far? year 7 correction of last Q

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88. ## medical terminology

define midsagittal

89. ## maths

1/2 of 156.25g!

90. ## maths

how much of a Newton would u flick a marble with?!

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91. ## science but not really!?

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92. ## math

the volume of a container that is 8'' long , 4 '' deep, and 3'' high is _ cu in. ???

how much of a Newton would you flick a marble with?!

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94. ## science/maths?

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95. ## pope john paul 2

can you tell me the background information on the pope jogn paul 2 of inspiration's life. And how this person has influenced our faith or inspired us to be a better person pleaseeee helppppp