Questions and responses by susan, page 3
  1. Microeconomics

    What keeps oligopolies from becoming a monopoly? Why don't the firms join to dominate the market? I know what oligopolies means: There are three conditions in a oligolopolistic market place. There has only a few large dominant firms. Market has high

    asked on May 31, 2009
  2. Chemistry

    The Label on a one pint bottle of water lists the following components. If the density is the same as pure water and you drink 3 bottles of water in one day, how many milligrams of each component will you obtain? 1) calcium 29 ppm 2)fluoride .09 ppm

    asked on September 7, 2008
  3. Physics

    The hydrogen atom contains a proton, mass 1.67 10-27 kg, and an electron, mass 9.11 10-31 kg. The average distance between them is 5.3 10-11 m. The charge of the proton is the same size, opposite sign of the electron. a)What is the magnitude of the average

    asked on January 13, 2008
  4. Multivariable calculus

    Hello, I have the next exercise about chain rule in multivariable calculus: I have to show that the differential equation: y(dz/dx)-x(dz/dy) = (y-x)z can be change to the equation: (dw/dv) = 0 using the new variables: u= (x^2)+(y^2) v = (1/x)+(1/y) w =

    asked on June 11, 2017
  5. math

    A true-false test consists of 15 items. (a) If Chris does not study at all and guesses each and every item in the test, describe the probability model for the number of correct guesses. (b) What is the probability that Chris gets 80% or more for the test?

    asked on August 24, 2016
  6. Technology in the classroom

    What is the ideal computer arrangement to use when you want to integrate computers directly into the classroom curriculum? A. One computer located in each classroom B. One computer that's shared among several classes C. A central computer lab, with one

    asked on April 7, 2016
  7. Math

    A 6 m ladder is leaning against the wall of a house. The angle between the ladder and the ground is 68 degrees. How far away is the ladder from the wall.? How high up the house does the ladder reach ? Give your answers accurate to two decimal places.

    asked on April 11, 2015
  8. Chemistry

    What volume of .225 M aluminum chloride solution contains 5.0 g solute?

    asked on March 12, 2015
  9. Chemistry

    Calculate the number of millilitres of NH3(aq) solution (d = 0.986 g/ mL) contain 2.5 % by weight NH3 which will be required to precipitate iron as Fe(OH)3 in a 0.8 g sample that contains 50 % Fe2O3.

    asked on July 26, 2014
  10. business math

    Joyce took out a loan for $ 21,900 at 12 percent on March 18, 2007. Which will be due on Jan 9, 2008. Use ordinary interest, Joyce will pay back on Jan 9 a total amount.

    asked on March 12, 2013
  11. physics

    A semi-trailer is coasting downhill along a mountain highway when its brakes fail. The driver pulls onto a runaway truck ramp that is inclined at an angle of 17.0° above the horizontal. The semi-trailer coasts to a stop after traveling 110 m along the

    asked on October 18, 2012
  12. chemistry

    human body is 255 square inches what is the total weight of the atmosphere on a human body expressesd in pounds

    asked on November 16, 2011
  13. physics

    Two satellites are in orbit around Mars with the same orbital radius. Satellite 2 has twice the mass of satellite 1. What is the centripetal acceleration of satellite?

    asked on November 10, 2011
  14. college chemistry

    I need to understand how to make a net ionic equation using the following elements: Sr++, Hg2, NaCl Or these: NH4, Ca++, K2SO4 I was not given the products of the reactions.

    asked on November 20, 2010
  15. physics

    which is more work pushing with 115N over 15 m or lifting 20N 10meters

    asked on March 4, 2010
  16. math

    Terri, Corey and Chris together made 20 baskets in a basketball game. Terry made 5 more than Corey. Chris made 3 times more baskets then Corey. How many baskets did they each have?

    asked on January 28, 2010
  17. word problem!!! algebra

    at noon, a cargo van crosses an intersection at 30 mph. At 12:30 pm, a car crosses the same intersection traveling in the opposite direction. At 1 pm, the van and car are 54 miles apart. How fast is the car traveling? I know the answer is 48 mph, but can

    asked on March 11, 2007
  18. Social Studies

    How did the location of Constantinople help it grow wealthy and prosperous?

    asked on May 4, 2018
  19. Accounting

    Based on the current economic situation, what economic factors should the company analyse to improve its sustainability in the marketplace?

    asked on January 11, 2018
  20. math - factoring

    I'm having some trouble factoring a problem. It's 75x^2 - 27 I know I can first factor out a GCF of 3 which leaves me with 3(25x^2 - 9) This seems to me to be a differences of squares but I cannot figure out what to do next. Thank you.

    asked on December 14, 2017
  21. math

    Write 523,582,900,000 in scientific form Is it 5.235829 x 10^-11? Thank you.

    asked on December 5, 2017
  22. Grammar

    What part of speech is love in this sentence " I love playing in the rain"

    asked on September 22, 2017
  23. Math

    For what whole number values of length and width will the rectangle have an area of 60 square yards and I'm perimeter of 38 yards?

    asked on April 29, 2015
  24. Math

    A 6 m ladder is leaning against the wall of a house The angle between the ladder and the ground Is 60 degrees . How far away is the ladder from the wall? How high up the house does the ladder reach? Give your answers accurate to two decimal places

    asked on April 10, 2015
  25. Statistics

    The time to fly between New York City and Chicago is normally distributed with a mean of 180 minutes and a standard deviation of 17 minutes. What is the probability that a flight is more than 200 minutes?

    asked on February 10, 2015
  26. Geometry

    The surface of a cube is painted red and blue, 3 sides of each. The cube is cut into 27 equal sized smaller cubes. Find both answers to the question, "How many cubes have at least 2 sides painted blue?" and "How many cubes have at least 1 side painted

    asked on January 24, 2015
  27. Chemistry

    1. calculate the volume of concentrated HNO3 (68%)that is needed to prepare stock solution 0.25M in 1000mL volumetric flask. (density HNO3 = 1.513 g/cm^3) 2. from above stock solution, determine volume needed to dilute to 500mL volumetric flask that

    asked on July 10, 2013
  28. business math

    Janet Home went to Citizens Bank. She borrowed $7,000 at a rate of 8 percent. The date of the loan was Sept 20. Janet hoped to repay the loan on Jan.20. Assuming the loan is based on ordinary interest, Janet will pay back interest on Jan.20 is?

    asked on March 12, 2013
  29. pysics

    A home run just clears a fence 105m from home plate. The fence is 4.00m higher than the height at which the batter struck the ball, and the ball left the bat at a 31.0 degree angle above the horizontal. At what speed did the ball leave the bat?

    asked on February 26, 2013
  30. child day care mangement

    developmentally appropriate practices are based upon knowledge of

    asked on October 21, 2012
  31. Algebra 1A Word Problem

    Can someone please help me with this Algebra problem. The equation y= -1777x + 27,153 can be used to predict the number of y of gun deaths in the U.S. x years after 2000, that is, x=0 corresponds to 2000, x=2 corresponds to 2002, x-6 corresponds to 2006,

    asked on May 27, 2010
  32. organic chemistry

    i'm having trouble figuring out my unknown compound. The elemental analysis is 87.28%carbon and 12.72% hydrogen for my unknown liquid, and for my solid unknown the elemental analysis is 79.22% carbon and 5.7% hydrogen and 15.98% oxygen. I'm not able to

    asked on August 19, 2009
  33. Finance

    Open-end Fund A has 100 shares of ATT valued at $100 each and 50 shares of Toro valued at $50 each. Closed-end Fund B has 75 shares of ATT and 100 shares of Toro. Both funds have 100 shares outstanding a. What is the NAV of each fund using these prices? b.

    asked on January 16, 2009
  34. literature

    can someone please help me to give me summary and study material for the poem Silver by Walter de la mare?

    asked on April 25, 2008
  35. Physics

    A convex mirror has a focal length of -18 cm. How far behind the mirror does the image of a person 3.0 m away appear? The answer must be in cm. The equation to use woulde be: 1/f = 1/do + 1/di do = 300 cm f = would it be -18 cm or 18 cm???

    asked on March 19, 2008
  36. English

    Sound Words. The___ of broken glass followed the ____ of the bullet as the rifle____ .The soldiers were awakened by the _____ of the bugle.

    asked on February 28, 2008
  37. Science

    if one cup has a larger volume of water in it than a second cup, which would you expect to have a larger amount of dissolved oxygen (or would it be equal for both)? I would expect more water to dissolve more oxygen. More water dissolves more salt, more

    asked on July 19, 2007
  38. Math

    24tenths - 1one 3 tenths

    asked on September 1, 2016
  39. math

    You roll a die. If an odd number comes up, you lose. If you get a 6, you win $54. If it is an even number other than 6, you get to roll again. If you get a 6 the second time, you win $18. If not, you lose. (a) Construct a probability model for the amount

    asked on August 24, 2016
  40. Math

    Write an expression for this statement: Double 5, then add 63. I don't understand double 5. Does it mean 5 to the 2nd power or 5 +5?

    asked on April 2, 2016
  41. History

    I need a campaign poster for populist party

    asked on November 29, 2015
  42. Math

    An airplane is at an altitude of 10 km. You spot the airplane at an angle of 55 degrees . How far away Is the airplane directly from you? Give your answer to the nearest kilometre.

    asked on April 11, 2015
  43. sociology

    what are subtopics for education

    asked on March 19, 2015
  44. Maths

    Bag A contains 2 white, 1 black and 3 red balls, Bag B contains 3 white, 2 black and 4 red balls and Bag C contains 4 white, 3 black and 2 red balls. One Bag is chosen at random and 2 balls are drawn at random from that Bag. Of the randomly drawn balls

    asked on August 17, 2014
  45. Chemistry

    2NaOH + CuSO4 = Na2SO4 + Cu(OH)2 100g of Cu(OH)2 is needed. Assuming 100% yield, how much of 1M NaOH and 0.5M CuSO4 must be used in mL? Any help would be awesome- even a formula on how to solve

    asked on April 1, 2014
  46. chemistry

    Unsure how to solve this without a formula... I think its combustion analysis? CxHy + O2 --> CO2 + H20 CxHY has a MW=78g/mol. 100g of CxHy yields 338g CO2 and 138g of H2O. What is the formula CxHY (what are x and y)? Balance the reaction equation. Any help

    asked on April 1, 2014
  47. finance

    Suppose a zero-coupon bond is selling for $614.00 today. It promises to pay $1,000 in exactly 10 years with annual compounding. What is the firm’s after-tax cost of debt if this is its sole debt outstanding (assuming the firm is in the 20% tax bracket)?

    asked on November 23, 2013
  48. college physics

    a bus that is traveling at 30.0km/h speeds up at a constant rate of 3.5m/s2. what velocity does it reach 6.8s later?

    asked on March 29, 2013
  49. math

    sonya spent 3/8ths of her money and had 15 dollars left what did she start with

    asked on March 20, 2013
  50. IPS

    why do glass bottles containing carbonated drinks sometimes explode when left in the sun for too long?

    asked on March 6, 2012
  51. Physics

    A light-rail train going from one station to the next on a straight section of track accelerates from rest at 1.1 m/s^2 for 20 m . It then proceeds at constant speed for 110m before slowing down at 2.2 m/s^2 until it stops at the station.

    asked on February 4, 2012
  52. physics

    Tom & !@#$%^& are 25 m apart at rest. Tom accelerates at 5 m/s/s towards !@#$%^&. 0.21 sec later !@#$%^& accelerates 6 m/s/s towards Tom. Where do they meet, how fast is each traveling when they meet, and when do they meet?

    asked on October 5, 2011
  53. Algebra

    In the graphing problem 3y=2x-9 m=? b=? What do m and b stand for? How do I solve?

    asked on February 24, 2011
  54. Physics

    Hot air rises over a heated stove element. The wall behind the stove appears to shimmer. Explain.

    asked on February 15, 2011
  55. Physics

    A 156 g hockey puck is attached to a rubber band and rotated with an angular speed of 9.2 rad/s on frictionless horizontal ice. It takes a force of 1.22 N to stretch the rubber band by 1 cm.

    asked on December 3, 2010
  56. Economics (PPFs)

    Society has 20 units of capital and 20 units of labor. The production function for X can be expressed as X = K1/2L1/2, and the production for Y can be expressed as Y = K + L. Which of the following input allocations is not efficient? Solution: Industry X

    asked on December 6, 2009
  57. Biology

    can stomach acid dissolve a chewing gum? can stomach acid dissolve iron? pls someone help

    asked on May 2, 2009
  58. pre calcu

    A ball is droped out of a window of a tall building. If it hists the ground 3.5s later, how high aboe the ground is the window?

    asked on October 6, 2008
  59. Music

    Is a short coda sometimes known as a musical tag? I been searching the web but couldn't find any good information.

    asked on December 3, 2006
  60. math

    Could you please explain how to scale up? I have something that is worth 110 points that needs to be scaled up to 200 points but I'm not sure how to do it. Thank you.

    asked on December 12, 2017
  61. Economics

    Why did John Mayard Keynes decide to become an economist/ financial guru, apart from his interest?

    asked on October 4, 2017
  62. History

    Objectives of the Camp David Accord. Did the US improve its relationship with the Arab World?

    asked on September 4, 2017
  63. Physics

    You build a loop-the-loop in your backyard. It has a diameter of 3.10 m. a) How fast will you have to be moving at the top of the loop to avoid falling off? The answer I got was 3.90 m/s. Is this correct? b)If you'll be coasting from the time you get to

    asked on December 3, 2016
  64. Math

    Explain how to do 2/7 + 12/35 ?

    asked on November 15, 2016
  65. Math, Precalc

    (3^x)+(5^{x+3})=(3^{x+4})-(1/3)*( 5^{x+2}). Solve

    asked on November 2, 2016
  66. math

    A true-false test consists of 15 items. (a) If Chris does not study at all and guesses each and every item in the test, describe the probability model for the number of correct guesses. each individual question has a probability of 1/2 of being correct so

    asked on August 24, 2016
  67. Math

    Can you help with a math word problem on rates and ratios

    asked on March 28, 2016
  68. psychology

    When researchers find similarities in development between very different cultures, what implications might such findings have for the nature-nurture issue?

    asked on February 21, 2016
  69. Chemistry

    How do I determine the value of the reaction 2HI(g) + 2.4 kcal --> H2(g) + i2(g) delta H = a) 2.4 kcal b) -2.4 kcal c) 0.00024 kcal d) -0.00024 kcal

    asked on February 16, 2016
  70. help


    asked on January 25, 2016
  71. algebra (check my work)

    60% of what number is 24? a/w = p/100 24/w = 60/100 24 * 100 = 60* w 2400 / 60 = 60w / 60 w = 40 am i correct?

    asked on May 25, 2015
  72. Math

    A rectangle has an area of 48 square yards. For what whole number values of length & width will the rectangle have the smallest perimeter?

    asked on April 29, 2015
  73. math

    I counted a total of 40 white and yellow cars. I have 9 times as many white cars as yellow how man white cars do I have?

    asked on September 4, 2014
  74. science

    What volume of ethanol must be diluted with water to prepare 674 mL of 0.854 M solution? The density of ethanol is given as 0.789 g/mL. Answer in units of mL

    asked on May 13, 2014
  75. Physics

    Calculate the impulse (in kgm/s) received by a football when it's kicked in a kickoff. The ball has a mass of 0.27 kg and travels a horizontal distance of 68 m. The ball is kicked at an angle q of 20.5 with the horizontal and spends 2.276 seconds in the

    asked on January 15, 2014
  76. Grammar

    1.Select the correct sentence: a.She is younger than him and me. b.She is younger than he and me. c.She is younger than him and I. d.She is younger than he and I. 2. Select the correct sentence: a. They, theirselves, had a happy holiday celebration. b.

    asked on November 24, 2013
  77. Chemistry came through funny. O3 + H-C=C-C(CH3)2-C(CH3)2-C(CH3)2-CH3 -> CO2 + H2O All of the numbers above are supposed to be subscript but keep coming out the same size as the letters. So this is the equation that i am trying to balance. In my question

    asked on March 13, 2012
  78. geometry

    I asked my teacher for a hint and he said that the pitcher's mound is not the radius. Am I supposed to assume that a side of a baseball diamond is 90? But that information wasn't given..... Still confused. If home plate is 60.5 feet from the pitcher's

    asked on October 18, 2011
  79. Math

    You and your roommate have timed the necessary physical operations. The first physical production step is to wash out the mixing bowl from the previous batch, add all of the ingredients, and mix them in your food processor. The mixing bowls hold

    asked on August 28, 2011
  80. Chemistry

    Describe how you could find the % by mass of water in the hydrate CuSO4Ÿ5H2O assuming that you did not already know the formula. Be specific and list the laboratory procedural steps you would take in the order that you would perform them.

    asked on June 27, 2011
  81. College Math

    Movies A survey of 350 customers was taken at Regal Cinemas in Austin, Texas, regarding the type of movies customers liked. The following information was determined. • 196 liked dramas. • 153 liked comedies. • 88 liked science fiction. • 59 liked

    asked on May 14, 2011
  82. Math 1428

    How do you find the interval form of 6x=2

    asked on March 5, 2011
  83. physics PLEASE HELP!

    The coefficient of kinetic friction between a suitcase and the floor is 0.26. If the suitcase has a mass of 70.0 {kg}, how far can it be pushed across the level floor with 680 {J} of work?

    asked on February 27, 2011
  84. Physics

    I got part a and b, but not c. We are trying to find delta T in part c, but I'm still confused on where to start even with the help. (a) An iron block of the mass 1.2 kg is suspended on a spring of the spring constant 140 N/m, and merged into a vessel with

    asked on December 3, 2010
  85. Algebra HELP

    Can someone please help me with this Algebra problem. The equation y= -1777x + 27,153 can be used to predict the number of y of gun deaths in the U.S. x years after 2000, that is, x=0 corresponds to 2000, x=2 corresponds to 2002, x-6 corresponds to 2006,

    asked on May 27, 2010
  86. physics

    A butterfly at eye level is 18 cm in front of an plane mirror. You are behind the butterfly, 45 cm from the mirror. What is the distance between your eye and the image of the butterfly in the mirror?

    asked on April 5, 2010
  87. math

    Students at Euler Middle School are talking about ways to raise money for a school party. One student suggests a game called Heads or Tails. In this game, a player pays 50 cents and chooses heads or tails. The player then tosses a fair coin. If the coin

    asked on March 5, 2010
  88. As Physics

    Please help me with this calculation __________________

    asked on March 4, 2010
  89. chemistry

    The density of Al is 2.7g/cm3. Express the density of Al in Kg/m cubed

    asked on February 25, 2018
  90. math

    If a scientists is looking at a circle of 1.15 millimeters in diameter, how much of the circle can he see in centimeters?

    asked on November 14, 2017
  91. math

    I'm a little confused about the different kinds of equations - what is the difference between exponential and quadratic, and exponential, quadratic, and linear?

    asked on November 9, 2017
  92. History

    For my project we have to make a claim based off of how our country (mine is Libya) has been impacted by religion. Is this a solid claim: Because of Libya’s transitional government, Mummer al Qaddafi came into power, leading the Libyan people in a

    asked on October 19, 2017
  93. math

    Lee has a 1 1/2 pound supply of Kitty Biscuit Treats. Each day he gives his kitten 1/8 pound of the biscuits. For how many day will his supply last?

    asked on September 24, 2017
  94. Islam

    why is religion considered a source of political belief in the Middle East

    asked on September 14, 2017
  95. Legislation

    fact that compares and contrasts the 50 state legislatures. We know that no two legislatures are the same, so they differ in many ways. The information you bring can be in a chart, in text or any format that shows the distinctions. Examples could include

    asked on September 11, 2017
  96. Math

    Depreciation on a 2014 25 ft boat bought for $70,000 in latrine November 2014?

    asked on June 4, 2017
  97. science

    what measures the quantity of matter

    asked on May 22, 2017
  98. Physical Science

    If Argon is 39.948, calculate average at kc mass of argon

    asked on March 9, 2017
  99. Math

    How to solve | x + 1 |

    asked on February 4, 2017
  100. Just checking Math-Absolute Value

    The equation for "the distance from x to -4 is less than 12" is |x-4|

    asked on January 17, 2017


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