Most popular questions and responses by mariah
  1. math

    which is greater 20 feet or 7 yards

    asked on February 19, 2014
  2. Economics

    3. Suppose the Clean Springs Water Company has a monopoly on bottled water sales in California. If the price of tap water increases, what is the change in Clean Springs' profit-maximizing level of output, price, and profit? Explain in words and with a

    asked on December 3, 2006
  3. math

    Suppose c and d vary inversely, and d = 2 when c = 17.

    asked on October 23, 2018
  4. Economics

    1. Your roommate's long hours in chem lab finally paid off--she discovered a secret formula that lets people do an hour's worth of studying in 5 minutes. So far, she's sold 200 doses and faces the following average-total-cost schedule: Q = 199 & ATC = $199

    asked on November 19, 2006
  5. Math

    What is the greatest odd number less than 250 ? Exlplain how you know.

    asked on January 24, 2017

    1) which of the following numbers are equivalent to 20%?(Choose all that apply)(only 2) A. o.oo2 B. 1/4 C. 0.20 D. 1/5 2)which of the following numbers are equivalent to 35%?(choose all that apply)(only 2) A. 7/20 B. 6/20 C. 3.5 D. 0.35 3) which of the

    asked on January 25, 2016
  7. Economics

    6. Show the effect of each of the following events on the market for labor in the computer manufacturing industry. Use graphs. a. Congress buys personal computers for all American college students. Wouldn't the demand curve shift to the right while the

    asked on December 4, 2006
  8. Social Studies

    Which of the following most contributed to the rise of Sumer? A. Farming** B. Military Power C. Isolated location D. Trade You are a young woman in Saudi Arabia. Which of these should you not plan to do? A. Apply for a job outside the home** B. Take a test

    asked on February 18, 2016
  9. Math

    John invested his savings in two investment funds. The amount he invested in Fund A was $8000 less than the amount he invested in Fund B. Fund A returned a 4% profit and Fund B returned a 8% profit. How much did he invest in Fund B, if the total profit

    asked on August 24, 2015
  10. Chemistry

    In the reaction C + O2 → CO2, 18 g of carbon react with oxygen to produce 72 g of carbon dioxide. What mass of oxygen would be needed in the reaction?

    asked on July 14, 2016
  11. Economics

    10. An industry currently has 100 firms, all of which have fixed cost of $16 and average variable cost as follows: Quantity / Average variable cost: (1/$1),(2,$2), (3,$3), (4,$4), (5,$5), and (6,$6) b. The price is currently $10. What is the total quantity

    asked on November 28, 2006
  12. Physics

    A contestant in a winter games event pushes a 59.0 kg block of ice across a frozen lake as shown in the figure below. The coefficient of static friction is 0.1 and the coefficient of kinetic friction is 0.03. The block is being pushed at a direction of 23

    asked on February 17, 2015
  13. Computer Literacy

    1. Which vendor did IBM select to create the operating system for the IBM PC? (A) Microsoft Macintosh DEC Dell 2. Which of the following components was a significant development featured in the Macintosh LISA computer? (A) C Prompt Disk Operating System

    asked on April 21, 2014
  14. computer literacy

    1. Which of the following options would return a true statement for the sentence: The sky is bluest early in the morning. (A) Sky and blue Sky not morning Sky or dark Sky and evening 2. Famed science fiction writer H. G. Wells once envisioned something to

    asked on April 27, 2014
  15. algerba

    Coco has a jar containing pennies and nickles. There is $9.20 worth of coins in the jar. If she could switch the number of pennies with the number of nickles, there would be $26.80 worth of coins in the jar. How many pennies and nickles are in the jar?

    asked on December 1, 2016
  16. Music

    I heard that "Itsbynne Reel" features stylistic elements of rock and jazz (especially bebop), but I don't recall that this song had bebop elements, can anyone clarify? Yes, according to this article, bebop

    asked on December 3, 2006
  17. Physics

    A child and sled with a combined mass of 45.0 kg slide down a frictionless hill. If the sled starts from rest and has a speed of 8.0 m/s at the bottom, what is the height of the hill (include units)?

    asked on December 2, 2015
  18. Trigonometry

    A painter wants to lean a 30-foot ladder against a wall. Safety guidelines recommend that the distance between the base of the ladder and the wall should be 1/4 of the length of the ladder. To the nearest degree, what acute angle should the ladder make

    asked on September 30, 2014
  19. Chemistry

    Calculate the freezing- and boiling-point changes for a solution containing 12.0 g of naphthalene (C10H8) in 50.0 g of benzene.

    asked on May 2, 2010
  20. Economic

    Suppose that labor is the only input used by a perfectly competitive firm that can hire workers for $50 per day. The firm’s production function is as follows: Days of Labor/Units of Output: 0/0, 1/7, 2/13, 3/19, 4/25, 5/28, 6/29, 7/29 c. Compute the

    asked on December 4, 2006
  21. Economics

    The chapter states that the elderly population in the United States is growing more rapidly than the total population. In particular, the number of workers is rising slowly, while the number of retirees is rising quickly. Concerned about the future of

    asked on November 17, 2006
  22. Physics

    The Asian Silver Carp is an invasive species of fish which has infested a number of American rivers. The disturbance of passing boats has been known to make these fish leap large distances out of the water. One such fish leaps with an initial velocity at

    asked on October 13, 2015
  23. chemistry

    How many grams of O2 are contained in a 25.0L sample at 5.20 atm and 28.0C?

    asked on November 13, 2014
  24. Computer Literacy

    2. Which of the following components was a significant development featured in the Macintosh LISA computer? (C) C Prompt Disk Operating System Graphical User Interface) Memory 4. Which is NOT a function associated with a motherboard? (D) Expansion slot

    asked on April 21, 2014
  25. Math

    The area of a square floor on a scale drawing is 36 square centimeters, and the scale drawing is 1 centimeter: 5 ft. What is the area of the actual floor? What is the ratio of the area in the drawing to the actual area?

    asked on February 19, 2019
  26. Algebra

    Mattie Evans drove 250 miles in the same amount of time that it took a turbopropeller plane to travel 1250 miles. The speed of the plane was 200 mph faster than the speed of the car. Find the speed of the plane

    asked on November 6, 2010
  27. Reading Book Project

    What are three objects that represent The Maze Runner?

    asked on January 6, 2013
  28. math

    A mother wants to invest $9,000.00 for her son’s future education. She invents a portion of the money in a bank certificate of deposit (Cd account) which earns 4% and the remainder in a saving bond that earns 7%. If the total interest earned after one

    asked on March 9, 2011
  29. Chemistry

    Given the balanced neutralization equation: H2SO4+2KOH→K2SO4+2H2O How many moles of potassium hydroxide (KOH) are required to neutralize 4.5 mol of sulfuric acid (H2SO4)? Assume that the sulfuric acid completely dissociates in water. 2 mols of KOH = 1

    asked on June 30, 2016
  30. Chemistry (Gen Chem 1)

    Assume diameter of a neutral helium atom is 1.40x10^2pm. Suppose that we could line up helium atoms side by side in contact with one another. How many atoms would it take to complete the distance of 6.70cm from end to end?

    asked on February 7, 2015
  31. Trigonometry

    Use a sine function to graph a sound wave with a period of 0.004 of a second and an amplitude of 3 cm. Find the frequency in hertz for this sound wave. (Enter only the number.)

    asked on October 1, 2014
  32. early childhood

    Whats two resources designed to assist teachers in constructively dealing with childrens challenging behaviors like biting, hitting, aggressive,etc?

    asked on July 25, 2011
  33. Communication

    Question 1. 1. Which of the following guidelines are most correct regarding rules for responding to self-disclosure? (C) Respond back immediately, support the person disclosing, and listen critically. Listen critically, never use the disclosure against the

    asked on September 30, 2014
  34. Music

    Did the Phantom of the Opera have a traditional orchestra without amplification? I thought that the Phantom of the Opera didn't ave a traditional orchestra without amplification is this correct? Did the Phantom of the Opera used successfully opera voices

    asked on November 25, 2006
  35. Economic

    How is income distribution affected in monopolies? The market for fertilizer is perfectly competitive. Firms in the market are producing output, but they are currently making economic losses. a. How does the price of fertilizer compare to the average total

    asked on November 26, 2006
  36. Basic Dressmaking Processes

    1. In order to produce a professional-looking garment, pressing should be done A. at each process. B. only when the garment is complete. C. just on the right side of the fabric. D. quickly and with a light touch. 2. A wooden clapper is used to A. hold an

    asked on August 20, 2015
  37. English

    Which choice effectively combines these two sentences? 'The plainer rooms are more sparsely furnished. Their architectural features, furnishings, and decorations are just as true to the periods they represent.' A. The plainer rooms are more sparsely

    asked on July 20, 2018
  38. math

    A relief package is released from a helicopter at 1600 feet. The height of the package can be modeled by the equation h(t)= -16t^2+1600 where h is the height of the package in feet and t is the time in seconds. The pilot wants to know how long it will take

    asked on August 2, 2016
  39. Physics

    A 91 kg man stands on a spring scale in an elevator. Starting from rest, the eleva- tor ascends, attaining its maximum speed of 1.7 m/s in 1.07 s. It travels with this constant speed for the next 5 s, undergoes a uniform negative acceleration for 1.67 s,

    asked on January 11, 2016
  40. physics

    After being struck by a bowling ball, a 1.4kg bowling pin sliding to the right at 4.5 m/s collides head-on with another 1.4 kg bowling pin initially at rest. Find the final velocity of the second pin in the following situations: a)The first pin moves to

    asked on November 27, 2012
  41. Physics

    The place kicker on a football team kicks a ball from ground level with an initial speed of 22.40 m/s at an angle of 15.0° above the horizontal. How far does the ball travel in the x-direction before it lands on the ground again? You may neglect air

    asked on October 13, 2015
  42. sociology

    1. Justice Potter Stewart would most agree with which claim about obscenity? (B) It is easy to concretely determine what obscenity is. People can intuitively understand what obscenity is. Obscenity ought to be allowed so long as no one is harmed. Obscenity

    asked on February 17, 2014
  43. Burnett

    Write balanced molecular and net ionic equations for the reaction of KHP with NaOH.

    asked on October 9, 2011
  44. Chemistry

    The specific heat capacity of copper is 0.09 cal/g°C. How much energy is needed to flow into a 10-gram sample to change its temperature from 20°C to 21°C?

    asked on July 6, 2016
  45. Trigonometry

    The depth d in feet of the water in a bay at is given by d(t) = 3/2 sin (5πt/31) + 23 where t is time. Graph the depth of the water as a function of time. What is the maximum depth of the water to the nearest tenth of a foot? (Enter only the number.)

    asked on October 2, 2014
  46. physics

    A bush baby, an African primate, is capable of leaping vertically to the remarkable height of 2.3 m. To jump this high, the bush baby accelerates over a distance of 0.14m while extending the legs. The acceleration during the jump is approximately constant.

    asked on October 9, 2014
  47. physics

    Heather and Jerry are standing on a bridge 53m above a river. Heather throws a rock straight down with a speed of 12m/s . Jerry, at exactly the same instant of time, throws a rock straight up with the same speed. Ignore air resistance. How much time

    asked on October 9, 2014
  48. Chemistry

    All the following are necessary parts of a neutralization reaction except A) an acid B) an indicator C) water D) a salt.

    asked on July 12, 2016
  49. Volumes of pyramids and cones

    Find the missing dimensions. Rectangular pyramid. L=8m, w=4.6m, v=88m3

    asked on February 19, 2014
  50. math

    how much would you pay for 14.2 gallons of gas that cost $2.08 gallon

    asked on May 8, 2019
  51. Chemistry

    Determine the frequency of light with a wavelength of 3.728 × 10 −7 cm. Answer in units of Hz Given the speed of light as 3.0 × 10 8 m/s, calculate the wavelength of the electromagnetic radiation whose frequency is 9.7 × 10 12 Hz. Answer in units of

    asked on October 17, 2011
  52. physics

    A jumbo jet must reach a speed of 360 km/h on the runway for takeoff. What is the least constant acceleration needed for takeoff from a 1.80 km runway?

    asked on September 3, 2009
  53. math

    Warren measured a recentangular window to find Out how much plastic he would need to cover it.The window measured 5ft 6 inches by2ft9inches.about how many square inches of plastics does Warren need to cover the window?

    asked on April 20, 2015
  54. Economics

    The chapter states that the elderly population in the United States is growing more rapidly than the total population. In particular, the number of workers is rising slowly, while the number of retirees is rising quickly. Concerned about the future of

    asked on November 17, 2006
  55. Chemistry 151

    How many moles of chloride ions are in 0.2580 g of aluminum chloride?

    asked on September 23, 2015
  56. Chemistry

    Calculate the pH of a 25 mL sample of distilled water after the addition of 1 mL, 2 mL, 3 mL, 4 mL, and 5 mL of NaOH and HCL. (0.1 M HCl and NaOH) In total, you need to show 10 calculations.

    asked on March 14, 2011
  57. MATH

    A truck enters a highway driving 60mph. A car enter the highway at the same place 14 minutes later and drives 66mph in the dame direction. From the time the car enters the highway, how long will it take the car to pass th truck?

    asked on March 9, 2011
  58. chemistry

    how many grams of solid NaOH are required to prepare 200.0 mL of a .050 M solution?

    asked on September 1, 2009
  59. math

    Between 6a.m.and 10a.m.the temperature rose by 5°f.between 10a.m.and 2p.m.the temperature rose by 6°f.between 2p.m.and 6p.m.the temperature rose by 0°c.would you be able to tell how much the temperature rose since 6a.m?

    asked on April 20, 2015
  60. Chemistry 2

    The equilibrium constant, Kc, for the following reaction is 1.54E-2 at 643 K. 2HI(g) H2(g) + I2(g) When a sufficiently large sample of HI(g) is introduced into an evacuated vessel at 643 K, the equilibrium concentration of I2(g) is found to be 0.351 M.

    asked on March 21, 2015
  61. Tulane University

    Frank and Oswalt report a molar absorptivity of 4700 L mol^-1 cm^-1 for thiocyanatoiron(lll) ion. What absorbance would you expect for a soloution that it 1.0e-4 M in thiocyanatorion(lll) ion, if the path length is 1.00 cm?

    asked on March 6, 2015
  62. Science: Phsycs

    A baseball player swings his 2 kg bat with a speed of 15 m/s. They hit a 0.142 kg baseball which was approaching at a speed of 40 m/s. the ball rebounds in the other direction at 45 m/s. If the baseball and bat are in contact for 5 ms, what is the average

    asked on October 25, 2011
  63. Economics

    Consider total cost and total revenue given in the following: (Quantity/Total Cost/Total Revenue): (0/8/0), (1/9/8), (2/10/16), (3/11/24), (4/13/32), (5/19/40), (6/27/48), (7/37/56) Can you tell whether this firm is in a competitive industry? If so, can

    asked on November 23, 2006
  64. History

    Who is King Tut's father and where is his tomb. Fourth paragraph =)

    asked on September 18, 2006
  65. chemistry

    A 0.248 M ZnCO3 solution is made from 21.4 g of solute? What is the volume of the solution?

    asked on January 12, 2015
  66. Trigonometry

    Solve for θ in the equation cos θ = -0.181 when 180º < θ < 360º. Round your answer to the nearest tenth of a degree.

    asked on September 30, 2014
  67. English

    Which poetic line contains both paradox and consonance? One summer day, all day I drove it hard How long it might last, how young it might be Ay, look, and he'll smile thy gloom away At least to know the worst is sweet

    asked on January 12, 2015
  68. Math

    The inflection point of the curve y = x4 − 8x3 + 24x2 + 7x − 3 is? So I got (1,21) I was wondering if this is correct because sometimes I will be doing something completely wrong and not even realize it.

    asked on November 16, 2014
  69. Trigonometry

    Identify the amplitude and the period of the function c(x) = 3cos (x + π).

    asked on October 1, 2014
  70. geometry

    if a polygon has a volume of 19 cm and is dilated by a factor 3\2 , what will be the volume of the dilated polygon

    asked on August 4, 2014
  71. Science

    how do you draw a bohr diagram of a atom and a ion and how are they different????

    asked on February 12, 2014
  72. social studies

    how did the civil war in 1861 affect texas

    asked on February 7, 2013
  73. AP US History

    i have to create a DBQ on the 1930's and the great depression in the united states. does anybody have any ideas on what kind of question i should come up with or ideas to help me get started?

    asked on March 9, 2012
  74. geometry

    find the perimeter of the polygon with vertices A(-5,-3) B(1,0) C (3,-4) D(-3,-7)

    asked on May 2, 2011
  75. college chem

    Calculate the pH of a 25 mL sample of distilled water after the addition of 1 mL, 2 mL, 3 mL, 4 mL, and 5 mL of NaOH and HCL. (0.1 M HCl and NaOH) In total, you need to show 10 calculations.

    asked on March 14, 2011
  76. physics


    asked on November 10, 2010
  77. physics

    Assuming biological substances are 90% water and the density of water is 1000 kg/meter cubed, estimate the mass of a fly, which can be approximated by a cylinder 4 mm long and 2 mm in diameter (volume (length*pi*radius squared) the answer is 1.131 X10 to

    asked on September 19, 2010
  78. Music

    What are rock ensembles? I went searching around the net to find out and all i came up with was the names of some really good rock bands. I'll try find out something useful but it might take a while =( An "ensemble" is a small group of musicians playing

    asked on November 16, 2006
  79. Chemistry

    What is theoretical yield in grams of CO2 formed from reaction of 3.12g CS2 and 1.88g O2?

    asked on July 8, 2016
  80. Physics

    A cargo plane is moving with a horizontal velocity of vx = +223 m/s at a height of y = 980 m above level ground as shown in the figure below when it releases a package. Ignoring air resistance, how much time will it take the package to reach the ground?

    asked on October 13, 2015
  81. math

    at a park 96 brown bag lunches were given out in thirty minutes if 29 bags remain and x represents the starting number of brown bag lunches which equation could be used to determine the value of x

    asked on July 8, 2015
  82. Math

    the perimeter if a rectangle is 42 centimeters. the lenght of a rectangle can be represented by (x+4), and its width acn be represented by (2x-7). what are the dimensions of this rectangle in centimeters?

    asked on March 29, 2015
  83. Chemistry 2

    The equilibrium constant, Kc, for the following reaction is 1.54E-2 at 643 K. 2HI(g) H2(g) + I2(g) When a sufficiently large sample of HI(g) is introduced into an evacuated vessel at 643 K, the equilibrium concentration of I2(g) is found to be 0.351 M.

    asked on March 21, 2015
  84. Chemistry

    Calculate the molarity of a 100. mL solution containing 22.3 g of sucrose (C12H22O11)

    asked on September 24, 2012
  85. physics

    What is the heat of fusion of silver? what is the heat of vaporization for silver? what is the specific heat of silver? thank you.

    asked on April 10, 2011

    We are doing solving polynomials using the zero factor property and here is the question: Marie has a rectangular board 18 inches by 23 inches around which she wants to put a uniform border of shells. If she has enough shells for a border whose area is 282

    asked on October 26, 2010
  87. Help Math!

    Battery Power Problem. A certain type of thermal battery for an airplane navigation device backup power has a mean life of 300 hours with a standard deviation of 15hours. What proportion of these batteries can be expected to have lives of 322 hours or

    asked on May 19, 2010
  88. math

    I need a sketch and label of a figure that has an area of 47 sq. cm.

    asked on April 8, 2010
  89. math

    a triangle has one side that lies along the line y=1/4x and another that lies along the line y=(-1/4)x. which of the following points could be a vertex of the triangle? a. (4,4) b. (0,0) c. (-4,-2) d. (1,8)

    asked on August 14, 2018
  90. Math

    Which of the following is the BEST illustration of congruence? A. a pair of shoes B. two dinner plates from the same set of dishes C. any two tables D. a slide and its projection on a screen is a the correct answer?

    asked on July 24, 2018
  91. Social Studies

    Explain the impact of multiculturalism on Canada.

    asked on October 13, 2017
  92. Physics

    a)In the series circuits, what do you notice about the voltage across each resistor compared with the voltage of the battery? (There could be more than one answer) 1.The resistor voltages multiplied together give the battery's voltage 2.The resistor

    asked on May 4, 2016
  93. Math

    Company A charges $11 per month plus $0.05 per minute, while company B charges $0.15 per minute with no monthly charge. For how many minutes will the monthly cost be the same??

    asked on February 10, 2016
  94. Physics

    The 3.1 kg box shown below slides with a constant speed down an incline at an angle of θ = 28.0° to the horizontal. What is the coefficient of kinetic friction?

    asked on November 14, 2015
  95. American National Government

    Control of the bureaucracy through legislative oversight is a matter of (Points : 1) denying Congress’ power of the purse. exercising the legislative veto and scalding agency heads in public sessions. exercising the legislative veto and its spending

    asked on January 26, 2014
  96. chemistry

    the maximum volume if Ziploc sandwich is 0.5 L at the pressure of 1 atm. use the gas law, calculate the pressure in the bag from the above volume of co2.

    asked on March 10, 2013
  97. Physics

    A projectile mass of 0.500 kg is shot straight up with an initial speed of 28.0 m/s. A. How high would it go if there were no air friction? I got this answer, it is 40 m. B. If the projectile rises to a maximum height of only 34.0 m, determine the

    asked on March 7, 2012
  98. Physics

    A winning basketball shot in the last second of a game is launched with an initial speed of 12.2 m/s, 68 degrees above horizontal, and at a height of 2 m above the floor. The ball passes through the basketball hoop mounted at 3.05 m above the floor. A.

    asked on March 7, 2012
  99. English

    How should this be written to correct the dangling modifier? The cost of production can be reduced by purchasing an ultra-pure water system.

    asked on February 23, 2012
  100. physics

    A cylinder of volume 2.3 L contains CO2 gas at 2.2 atm. A piston is pushed into the cylinder to decrease the volume to 1.2 L with no temperature change. What is the new pressure of the gas in atm? im completely stuck on how to start this.

    asked on February 8, 2012


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