tatiana

Most popular questions and responses by tatiana
  1. Expected Value?

    A company estimates that 0.4% of their products will fail after the original warranty period but within 2 years of the purchase, with a replacement cost of $300. If they offer a 2 year extended warranty for $46, what is the company's expected value of each

    asked on September 25, 2016
  2. Expected Value? Help

    Kyd and North are playing a game. Kyd selects one card from a standard 52-card deck. If Kyd selects a face card (Jack, Queen, or King), North pays him $4. If Kyd selects any other type of card, he pays North $3. a) What is Kyd's expected value for this

    asked on September 25, 2016
  3. Expected Value

    A bag contains 2 gold marbles, 7 silver marbles, and 23 black marbles. Someone offers to play this game: You randomly select one marble from the bag. If it is gold, you win $4. If it is silver, you win $2. If it is black, you lose $1. What is your expected

    asked on October 6, 2016
  4. physics

    a cheetah can accelerate from rest to 24 m/s in 2.0 s . Assuming the acceleration is constant over the time interval, a)what is the magnitude of the acceleration of the cheetah? b) what is the distance traveled by the cheetah in these 2.0 s.? c) a runner

    asked on September 21, 2010
  5. pre-calculus

    find the area of the segment formed by a chord 24 cm long in a circle of radius 13 cm.

    asked on September 28, 2011
  6. Expected Value

    A bag contains 1 gold marbles, 10 silver marbles, and 29 black marbles. Someone offers to play this game: You randomly select one marble from the bag. If it is gold, you win $4. If it is silver, you win $2. If it is black, you lose $1. What is your

    asked on September 25, 2016
  7. pre-calculus

    a ship passes by buoy b which is known to be 3000 yd from peninsula p. the ship is steaming east along line be and angle pbe is measured as 28 degrees. after 10 min., the ship is at s and angle pse is measured as 63 degrees. how far from the peninsula is

    asked on October 5, 2011
  8. 7th grade

    what did the electrician say after fixing a light bulb at the top of the empire state building?

    asked on December 7, 2009
  9. Physics

    Three identical balls, with masses M, 2M, and 3M are fastened to a massless rod of length L as shown. The rotational inertia about the left end of the rod is: That's the layout below. Would calculus be needed in this problem (intergration) because then Im

    asked on December 9, 2006
  10. physics

    When you step on the accelerator to increase the speed of your car, the force that accelerates the car is eitheir the force of your foot on the accelerator, the force of friction of the road on the tires,the force of the engine on the drive shaft, or the

    asked on November 18, 2006
  11. pre-calculus

    in Triangle abc, tanA=3/4, tan B=1, and a=10. find b in simplest radical form.

    asked on October 3, 2011
  12. pre-calculus

    suppose a triangle has two sides of lengths a and b. if the angle between these sides varies, what is the maximum possible area that the triangle can attain? what can you say about the minimum possible area?

    asked on September 28, 2011
  13. chemistry

    The growth of Pseudomonas bacteria is modeled as a first-order process with K=0.035 min ^-1 at 37 degrees C. The initial Pseudomonas population density is 1.0 x 10^3 cells/L. Enter your answers in scientific notations. A) What is the population density

    asked on September 14, 2015
  14. English

    Fire can be either friendly or a foe, depending on the situation. is this a correct paralell sentence

    asked on March 12, 2013
  15. English

    My sister Aliah is both a comic and smart. Parallel Sentence?....

    asked on March 12, 2013
  16. pre-calculus

    How do I prove that sinx/sinx+cosx=tanx/1+tanx

    asked on October 3, 2011
  17. World History

    How was mao's vision of communism different from that of lenin?

    asked on March 21, 2010
  18. English

    Neither the searing pain in my toe nor the blinding rain in my face will keep me from finishing the race. Is this a correct parallel sentence?....

    asked on March 12, 2013
  19. please check over my work

    A 2.5 kg stone is released from rest and falls toward earth. After 4s, the magnitude of its momentum is: My work: J=F*t =(F *t)= 24.5N * 4s F= 2.5 *9.81= 24.5 J=P P= 98kg m/s A sphere X, of mass 2kg, is moving to the right at 10m/s. Sphere Y, of mass 4 kg

    asked on November 18, 2006
  20. physics

    Some hydrogen gas is enclosed within a chamber being held at 200 whose volume is 0.0250 . Initially, the pressure in the gas is (14.8 ). The chamber is removed from the heat source and allowed to cool until the pressure in the gas falls to . At what

    asked on September 9, 2012
  21. social studies

    What doctrine of rights did both the "no incorporation" justices and the "plus incorporation" justices use to expand the notion of legal rights?

    asked on February 12, 2014
  22. pre-algebra

    how long will it take to earn $568.75 in interest if $2500 is invested at a 6.5% annual interest rate

    asked on March 23, 2012
  23. science

    Which of the following is an example of an environment pressure

    asked on December 1, 2016
  24. experimental psychology

    Given that on one section of the SAT the mean is 500 and the standard deviation is 100, what is the approximate probability of a student scoring 600 or higher on the test? Round as appropriate.

    asked on March 16, 2016
  25. Biology

    In humans, the allele for brown eyes is dominant to the allele for blue eyes. If a man with blue eyes and a woman with brown eyes who is homozygous for eye color have children, what is the probability of having a child with blue eyes? Here are the choices:

    asked on November 26, 2014
  26. English

    According to some economists, neither high unemployment nor large deficits will keep the economy from rebounding. How to make this a parallel sentence?

    asked on March 12, 2013
  27. Economics

    What were the drawbacks of central planning in the former Soviet Union...Plz help ASAP LUV tatiana It was political, as opposed to practical. It relied on false data, provided politically correct. It failed to allow for market forces, producing much that

    asked on April 19, 2007
  28. chemistry

    A 2.000g sample of magnesium was burned in air to form an oxide. After the product was purified it was found to have a mass of 3.317g. What is the empirical formula for the product? I know how to find a empirical formula, I just don't understand what

    asked on October 29, 2009
  29. physics

    A baseball leaves a pitcher's hand horizontally at a speed of 115 km/h. The distance to the batter is 18.3 m. (Ignore the effect of air resistance.) (a) How long does the ball take to travel the first half of that distance? (b) The second half? (c) How far

    asked on October 7, 2012
  30. physics

    A cart is propelled over an xy plane with acceleration components ax = 5.1 m/s2 and ay = -2.9 m/s2. Its initial velocity has components v0x = 8.2 m/s and v0y = 11.2 m/s. In unit-vector notation, what is the velocity of the cart when it reaches its greatest

    asked on October 7, 2012
  31. math

    what did the donut say to the filling?

    asked on December 6, 2009
  32. Economics

    How did the Four Modernizations make the Chinese economy more like the U.S. free enterprise system? Check this site for some information. http://en.wikipedia.org/wiki/Four_Modernizations

    asked on April 19, 2007
  33. physics concepts (please check over my work)

    A uniform cyclinder made of lead has the same mass and the same length as a uniform solid cylinder made of wood. The rotatonal inertia of the lead cylinder compared to the wooden one is: I thought at first that the rotational inertia cannot be known or

    asked on December 9, 2006
  34. pre-calculus

    suppose a triangle has two sides of lengths a and b. if the angle between these sides varies, what is the maximum possible area that the triangle can attain? what can you say about the minimum possible area? could you explain by detail

    asked on September 29, 2011
  35. Energy (physics)

    The wound spring of a clock would possess the same potential as kinetic energy. I am I correct in that statement. No. The wound spring has PE. Now what is this writing of KE? What is moving? how is it connected or related to the wound spring?

    asked on November 5, 2006
  36. Check my math please

    Total Rainfall = rainfall mm x area covered In order to ensure that our values are correct we will need to convert the area covered (the total area of the two tanks) from metres into millimetres. We will also need to convert the total rainfall (KL) into

    asked on April 23, 2011
  37. physics

    I had wrote that was because I was told that in the beginning of the spring being wound the PE=KE. Can I check a concept question, The amount of work required to stop a moving object would be equal to the mass of the object times it intial speed due to

    asked on November 5, 2006
  38. history maps

    1 5/8 inches represents about how many miles on the scale bar on the political map legend? 3.8 centimeters represents about how many kilometers?

    asked on November 19, 2010
  39. Home Economics

    Q: How did conflict over the First and Second Banks of the United Sates reflect Federalist and Antifederalist views of government? Federalist view http://en.wikipedia.org/wiki/Federalist_Party_(United_States)

    asked on April 16, 2007
  40. English

    The space shuttle was both a marvel and huge. Parallel Sentencce?....

    asked on March 12, 2013
  41. Math

    Demonstrate the if f and g are one-to-one functions then f°g is also one-to-one

    asked on September 21, 2018
  42. math

    put in order from least to greatest; 3/3, 3/5, 3/6, 3/8

    asked on September 14, 2011
  43. Maths

    So if I'm using the area 8558.25 in that math I need to have it as 8558.25squared and then sqaure root it?

    asked on April 24, 2011
  44. Math

    Okay so I'm trying to work out how many mm of rain fell in a certain area. I've got the total volume/capacity that fell (3.51125KL) and the total area that it fell in (8558.25m). My formula is Total Rainfall = rainfall mm x area covered How would I make

    asked on April 23, 2011
  45. Math

    Hey I'm working on a math assignment and I'm trying to work out the total amount of rainfall that fell in a certain area. Would this formula be correct? Total rainfall = rainfall mm x duration of storm minutes x area covered And with my rainfall mm I

    asked on April 23, 2011
  46. Physics

    The space shuttle releases a satellite into a circular orbit 440 km above the Earth. How fast must the shuttle be moving (relative to Earth) when the release occurs?

    asked on October 11, 2010
  47. Chemistry (please help)

    How would you make a serial dilution if you have a starting value 100mM of X The are the values of X show different dilutions. I think she wants to know starting from 100mM of X how you would get the X values through a serial dilution. X 0 1 3 1 10 30 100

    asked on January 28, 2007
  48. physics

    The homework question asks: which work woulf be required to stop a moving object: the intial speed, the intial kinetic energy of the object, the mass of the object times it acceleration, the mass of the object times its intials speed, or the square of the

    asked on November 5, 2006
  49. Math

    Show that f is a function one-to-one, if and only if f(x) = 0 for x=0. I cannot solve this demonstration, I know that if both elements are the same and their functions are the same, then is one to one, but in this case they only show me one element. Please

    asked on September 19, 2018
  50. conics

    given A(6,8) and B(-6,-8) write an equation in terms of x and y for all points P(x,y) such that segment PA is perpendicular to segment PB. simplify the equation and interpret your answer.

    asked on March 23, 2012
  51. pre-calculus

    solve cos 2x=secx for 0(

    asked on October 27, 2011
  52. world history

    What single event set in motion the start of WW1?

    asked on March 21, 2010
  53. Algebra

    How come log5 25^4 reduces to 4 log5 25 then 4 times 2 then finally eight?

    asked on January 17, 2009
  54. chemistry (please check/help)

    How would you make a serial dilution if you have a starting value 100mM of X The are the values of X show different dilutions. Volume variables (x) mL 0 1 3 1 10 30 100 We starting out with 100mM of X which would be considered its concentration. In order

    asked on January 28, 2007
  55. chemistry (work shown)

    How would you make a serial dilution if you have a starting value 100mM of X The are the values of X show different dilutions. Volume variables (x) mL 0 1 3 1 10 30 100 We starting out with 100mM of X which would be considered its concentration. In order

    asked on January 28, 2007
  56. Social Studies

    Why were Whig Congressman angry about the war? What did they accuse Polk of? Plz help

    asked on February 22, 2017
  57. physics

    A train at a constant 68.0 km/h moves east for 41 min, then in a direction 65.0° east of due north for 22.0 min, and then west for 60.0 min. What are the (a) magnitude (in km/h) and (b) angle (relative to north, with east of north positive and west of

    asked on October 7, 2012
  58. physics

    A train at a constant 68.0 km/h moves east for 41 min, then in a direction 65.0° east of due north for 22.0 min, and then west for 60.0 min. What are the (a) magnitude (in km/h) and (b) angle (relative to north, with east of north positive and west of

    asked on October 7, 2012
  59. math

    given O(0,0) and N(12,0) write an equation in terms of x and y for all points P(x,y) such that segment PO is perpendicular to segment PN. simplify this equation and show that P is on a circle.

    asked on March 22, 2012
  60. Physics

    A cannon ball is shot from a cannon with a horizontal velocity of 200m/s. What is the time until impact on a target 50m downrange? What is the objects horizontal velocity at impact (ignoring air resistance)?

    asked on October 7, 2011
  61. chemistry

    I have a lot of trouble doing this chemistry exercise It says: The altitude of the lake affects the solubility of oxygen in lakes high in the alps. if the solubility of O2 from the air is 7.89 mg/L M at sea level and 25C, what is the solubility of O2 in

    asked on February 11, 2011
  62. science

    Why was the discovery of microspheres and coacervates an important contribution to the understanding of how life might have originated on Earth?

    asked on February 22, 2010
  63. living enviroment

    how do yuh break the the spermatogenesis and get the meaning for example biology bio=life ; logy = study of

    asked on November 3, 2009
  64. english

    NEED TO DO SENTENCES WITH THESE WORDS] USING,WAVE,MOAN,CLOSE,DREAM,TRADING,SKATE,LOOK,SKATING,TRADE,CLEAN,WRITING.

    asked on March 4, 2009
  65. Algebra

    z^5-28z^3+27z=0 How do you use variable substitution and factoring to find all of the roots of this equation? I know how to do it if the z would have only been to the fourth power, but how do you do it with an odd numbered power like this? Thanks!!

    asked on January 18, 2009
  66. math

    how do you find the plot the slope and y-intercept 2y=4x-4

    asked on July 25, 2008
  67. math

    How do you soleve radicals

    asked on March 4, 2008
  68. English

    Which of the following sentences contains an error in subject-verb agreement? a) Either Dennis or Susan is going to pick you up. B)Each of the 14 groups are going to contribute an item to the auction. C) Krisy, Molly, and Kate attend the same university

    asked on August 24, 2015
  69. Math

    Express the following in term of sum (or difference)of logarithms: log (10A)/(7B^2)

    asked on August 2, 2014
  70. college calculus

    I don't know how to solve this indefinite integral with both limits as variables: ^x^3 ç (z^4+1)dz ⌄ln(x) If you could explain I'd appreciate it.

    asked on November 30, 2013
  71. physics

    A plane flies 475 km east from city A to city B in 50.0 min and then 986 km south from city B to city C in 1.00 h. For the total trip, what are the (a) magnitude (in km) and (b) direction of the plane's displacement, the (c) magnitude (in km/h) and (d)

    asked on October 7, 2012
  72. conics

    given O(0,0) and N(12,0) write an equation in terms of x and y for all points P(x,y) such that segment PO is perpendicular to segment PN. simplify this equation and show that P is on a circle.

    asked on March 22, 2012
  73. science

    Where can I get any good scientific journals which might have info on dingoes

    asked on April 19, 2011
  74. math

    can someone plzz tell me whichone is true. just but down the number when u answer back plzz & thank you 1. 14+(-25)> -50= 2. 20*10^3 3. 3/4 + 3/4> 1 4. 6^2=2^6 5. -21-(-39)=60 6. 19 7. 11*11*11 = 33^3 8. 38

    asked on February 24, 2011
  75. World History

    What started the civil war in china?

    asked on March 21, 2010
  76. US History

    In what ways did the progressive belief in using experts played a role in shaping roosvelts reforms?

    asked on March 2, 2010
  77. Algebra

    What do you do in synthetic division when there's a two digit number? For example, this is what I'm synthetically dividing 3 2 5 7 3 3 1 8 8 times three is 24, so what should I do? Thanks for your help Tatie

    asked on January 18, 2009
  78. Algebra

    We are learning using the log button in algebra. I have a TI-83 calculator. My book says that log10 85 (there is no space between thet 10 and the 85, that's just to show the different numbers) is equal to 1.93 approximately. But I got 85. How do you

    asked on January 17, 2009
  79. social studies

    how did events in the west help the Patriots' cause?

    asked on May 19, 2008
  80. englise

    i need help with home work and i don't know what some of the stuff means i can Help tatiana i got an A in english Please ask specific questions and include what you think the answers might be. Someone here will be happy to help you. =)

    asked on May 31, 2007
  81. economics

    What were the original causes of the u.s. trade deficit? Help please ASAP Check this site. (Broken Link Removed)

    asked on April 24, 2007
  82. Chemistry (please help)

    How would you make a serial dilution if you have 100mM of X These are the values of X that she gave. X 0 1 3 1 10 30 100 These are the values of X in the serial dilution. If you could help me out by start me off because I am kind of confused with the

    asked on January 27, 2007
  1. Math

    Ok so you guys good

    posted on November 19, 2018
  2. math

    What the answer

    posted on July 13, 2018
  3. Science

    The answer is postion #4

    posted on June 18, 2018
  4. MatH HELP

    How did you get .29629

    posted on November 21, 2017
  5. english plz plz help

    Ms.Sue , I just took the quiz. The right answers were: 1) D 2) C 3) B 4) C 5) A 6) B So stop calling people names and saying that they're lying. I just got a 100% on the quiz. Why do you even put answers here if you're just going to insult the other people

    posted on September 20, 2017
  6. english

    d

    posted on March 28, 2017
  7. Math

    If two trapezoids have the same area do they always have the same perimeter

    posted on January 24, 2017
  8. math

    I just need help hoes

    posted on January 19, 2017
  9. Math

    add it up

    posted on December 1, 2016
  10. Government

    4) effective government cannot be run by politicians that base their public opinions on poll results.

    posted on November 14, 2016
  11. Expected Value

    Thanks

    posted on October 6, 2016
  12. Expected Value? Help

    For (a) I have 11.55 is this correct

    posted on September 25, 2016
  13. Expected Value? Help

    what?

    posted on September 25, 2016
  14. Expected Value?

    iS IT 44.616

    posted on September 25, 2016
  15. math

    Is 16.6 a rational or irrational# ????

    posted on August 21, 2016
  16. math

    40

    posted on November 3, 2015
  17. science

    observing

    posted on September 28, 2015
  18. subtraction (math)

    Your butt plus my bütt ID thesse nuts

    posted on September 1, 2015