Popular questions and responses by AMY
  1. algebra 2

    A drama club is planning a bus trip to new york city to see a broadway play. the cost per person for the bus renatl varies inversely as the number of people going on the trip. It will cost $30 per person if 44 people go on the trip. How much will it cost

    asked on May 19, 2014
  2. statistics

    A survey for brand recognition is done and it is determined that 68% of consumers have heard of Dull Computer Company. If a survey of 800 randomly selected consumers is to be held would it be unusual for 554 of them to recognize Dull Computer Company?

    asked on October 30, 2013
  3. physics

    A 65 kg skier speeds down a trail, as shown in Figure 5-24. The surface is smooth and inclined at an angle of θ = 20° with the horizontal. (a) Draw a free-body diagram for the skier. (Do this on paper. Your instructor may ask you to turn in this

    asked on January 13, 2010
  4. Kinetics Problem II

    The data below were collected for the following reaction: 2NO2 (g) + F2 (g) ->2NO2F(g) A: Calculate the value of the rate constant, k. B: What is the overall order of the reaction?

    asked on January 30, 2013
  5. Math

    The sides of the rectangle are in the ratio of 4:7. If its length is 31.5 in., find the width, the perimeter, and the area of this rectangle.

    asked on February 7, 2017
  6. Statistics

    The weights of the fish in a certain lake are normally distributed with a mean of 15lbs. and standard deviation of 6lbs. If a sample of 5 fish are taken from the lake, find the probability their means weights are between 12.6 lbs. and 18.6 lbs.

    asked on October 30, 2013
  7. physics

    A 60.0-kg skier with an initial speed of 12.0 m/s coasts up a 2.50-mhigh rise and angle is 35 degrees.Find her final speed at the top, given that the coefficient of friction between her skis and the snow is 0.0800. (Hint: Find the distance traveled up the

    asked on July 14, 2013
  8. Physics

    A 23 kg suitcase is being pulled with a constant speed by a handle that is at an angle of 25° above the horizontal. If the normal force exerted on the suitcase is 155 N, what is the force F applied to the handle?

    asked on January 14, 2010
  9. physics

    A little girl of mass 30kg is jumping straight up and down on a stretched trampoline. During a single jump, she reaches a maximum height of 5.0m above the horizontal surface of the trampoline and deeps to 1.0m below the surface. Use the acceleration due to

    asked on June 9, 2020
  10. Maths

    In a box of chocolates, •one-fifth are plain chocolate •one-sixth are white chocolate •the other 38 are milk chocolate. How many chocolates are there in the box?

    asked on July 16, 2016
  11. Probability/Statistics

    A quiz consists of 10 multiple-choice questions, each with 4 possible answers. For someone who makes random guesses for all of the answers, find the probability of passing if the minimum passing grade is 70 %. I'm not sure what to do. I figured that

    asked on July 11, 2009
  12. Chemistry

    which is the stronger acid, HIO4 or HBrO4?

    asked on June 8, 2011
  13. Math

    If a seed is planted, it has an 85% chance of growing into a healthy plant.if 8 seeds are planted what is the probability that exactly 3 don't grow ?

    asked on May 4, 2016
  14. Math

    F(x)= 3/2x +b In the function above, b is a constant. If f(6)=7, what is the value of f(-2) ?

    asked on November 27, 2016
  15. Geometry

    Which one of these is NOT a step used when constructing an inscribed square using technology? A. Create a circle using the center with given points tool. B. Connect the points with a line through the center of the circle. C. Mark the points of intersection

    asked on January 20, 2015
  16. I don't understand this chemistry problem?

    The question reads: Place the following elements in order of decreasing atomic size: selenium, chlorine, fluorine, rubidium, calcium, and sulfur. I looked this up on a periodic table and my answer was: Rb, Se, Ca, Cl, F, S. This is still marked wrong, and

    asked on December 3, 2012
  17. Sat Math

    0.2B + 0.1S = C Rhia is using the above equation to investigate the carbon footprint, C, in kilograms of carbon dioxide (CO2) emissions, for her morning commute which S miles are by subway and B miles are by bus. How many kilograms of (CO2) per mile does

    asked on August 1, 2018
  18. physics

    A science student is riding on a flatcar of a train traveling along a straight horizontal track at a constant speed of 18.0 m/s. The student throws a ball along a path that she judges to make an initial angle of 68.0° with the horizontal and to be in line

    asked on September 18, 2012
  19. Math

    2 neon lights are turned on at the same time. One blinks every 4 seconds and the other every 6 seconds, how many times will they blink at the same time?

    asked on September 21, 2015
  20. Social Studies

    Why were members of the Third Estate frustrated with the French government? A. They opposed the wars that had been fought during the 1700s. B. They believed the government should help prevent crop failures. C. They thought they paid too much in taxes. D.

    asked on May 11, 2019
  21. can you please look over my answers? clauses

    Can you please look over the answers that I have for the different clause questions? Thanks ahead of time! Ohh, & S-subject, DO-direct object, PN-predicate noun, OP-object of preposition. Thank you! [What I wanted to do] was to finish my work. S The

    asked on December 11, 2011
  22. Math

    An airline runs a commuter flight between Portland and Seattle, which are 145 miles apart. If the average air speed could be increased by 40 miles per hour, the travel time would be decreased by 12 minutes. What air speed is required to obtain this

    asked on November 2, 2011
  23. Math

    Assuming the population has an approximate normal distribution, if a sample size n = 17 has a sample mean x = 47 with a sample standard deviation s = 3 , find the margin of error at a 98 % confidence level. Round the answer to two decimal places. Please

    asked on June 17, 2020
  24. Math

    The graph illustrates a normal distribution for the prices paid for a particular model of HD television. The price paid is 1600 and the standard deviation is 55 What is the approximate percentage of buyers who paid more than 1710 ? I got 2.28 and it is

    asked on June 10, 2020
  25. physics

    Children slide down a frictionless water slide that ends at a height of 1.80 m above the pool. If a child starts from rest at point A and lands in the water at point B, a horizontal distance L = 2.46 m from the base of the slide, determine the height h of

    asked on October 28, 2016
  26. Math

    For a confidence level of 80% with a sample size of 26, find the critical T value. Please help

    asked on June 17, 2020
  27. educatial technology

    which of the following statements is true of a time management plan? a. it is a work in progress that will need to be altered many times b. the plan you create is the one you should stick with c. you dont need to schedule breaks or free time d. it isnt

    asked on February 23, 2018
  28. math

    The first term of an A.P is equal one-half of the common difference,d, find the 8th term of the A.P in the tern of 'd'

    asked on November 3, 2019
  29. Geometry

    Points $A$ and $B$ are on a circle centered at $O$, and point $P$ is outside the circle such that $\overline{PA}$ and $\overline{PB}$ are tangent to the circle. If $\angle OPA = 32^{\circ}$, then what is the measure of minor arc $AB$, in degrees?

    asked on June 26, 2015
  30. Gas Law Chemistry

    I need help on these two questions: If a certain gas occupies a volume of 16L when the applied pressure is 8.0atm , find the pressure when the gas occupies a volume of 4.0L . A certain gas is present in a 12.0L cylinder at 4.0atm pressure. If the pressure

    asked on October 25, 2012
  31. Stats

    In the past, the mean running time for a certain type of flashlight battery has been 9.8 hours. The manufacturer has introduced a change in the production method and wants to perform a hypothesis test to determine whether the mean running time has

    asked on November 22, 2014
  32. Please help me with this Q

    Find the standard deviation for the given data. Round your answer to one more decimal place than the original data. 22, 29, 21, 24, 27, 28, 25, 36 A. 4.8 B. 4.2 C. 2.8 D. 1.6

    asked on September 23, 2014
  33. Spanish

    Fill in the blanks with questions based on the cues. Remember to use correct capitalization and punctuation. can someone please check my homework 1. ¿? / no / estudiar / tú / en la biblioteca / hoy / por qué A. ¿ Por qué tú no estudiar hoy en la

    asked on February 23, 2014
  34. The Binding Energy of Electrons?

    An X-ray photon of wavelength 0.954 nm strikes a surface. The emitted electron has a kinetic energy of 935 eV. What is the binding energy of the electron in kJ/mol? [KE =1/2 mv^2; 1 electron volt (eV) = 1.602 x 10^- 19 J]

    asked on November 26, 2012
  35. Physics

    The artist Anya Calderona constructs the mobile shown in the figure.(Figure 1) In the illustrated configuration, the mobile is perfectly balanced. Assume the strings and crossbars are massless. If Anya decides to make the star twice as massive, and not

    asked on November 13, 2012
  36. physics

    Truck brakes can fail if they get too hot. In some mountainous areas, ramps of loose gravel are constructed to stop runaway trucks that have lost their brakes. The combination of a slight upward slope and a large coefficient of friction in the gravel

    asked on October 31, 2009
  37. English

    Why does scrooge dislike Christmas so much?

    asked on June 24, 2020
  38. Intro to Physics

    A sample of an unknown material appears to weigh 295 N in air and 165 N when immersed in alcohol of specific gravity 0.700. (a) What is the volume of the material? ___________m^3 (b) What is the density of the material? ____________ kg/m3 I am getting the

    asked on November 7, 2012
  39. Math

    In the country of United States of Heightlandia, the height measurements of ten-year-old children are approximately normally distributed with a mean of 55.7 inches, and standard deviation of inches. What is the probability that a randomly chosen child has

    asked on June 9, 2020
  40. Math

    A parking lot contains motorcycles (2 wheels) and cars (4 wheels). There are 35 vehicles and 114 wheels. How many motorcycles and cars are there?

    asked on July 25, 2015
  41. Statistics

    A nutritionist wants to conduct a study to validate the efficacy of an herb as an aid in weight loss. She randomly assigns half of a group of overweight persons to a treatment group who are given the herb with instructions for its use and a planned diet

    asked on September 11, 2014
  42. physics

    A person is riding on a Ferris wheel of radius R. He starts at the lowest point of the wheel. When the wheel makes one complete revolution, is the net work done by the gravitational force positive, zero, or negative? Do you need to know how the speed of

    asked on February 13, 2012
  43. math

    Consider the differential equation dy/dx = -1 + (y^2/ x). Let y = g(x) be the particular solution to the differential equation dy/ dx = -1 + (y^2/ x) with initial condition g(4) = 2. Does g have a relative minimum, a relative maximum, or neither at ?

    asked on April 4, 2020
  44. Algebra 2

    Suppose you are researching the eating habits of people your age. What sampling method could you use to find the percent of students in your grade who eat five servings of fruit and vegetables each day? What is an example of a survey question that does not

    asked on April 23, 2013
  45. Statistics

    Accrotime is a manufacturer of quartz crystal watches. Accrotime researchers have shown that the watches have an average life of 32 months before certain electronic components deteriorate, causing the watch to become unreliable. The standard deviation of

    asked on November 16, 2016
  46. physics

    The figure shows an overhead view of a 3.00-kg plastic rod of length 1.20 m on a table. One end of the rod is attached to the table, and the rod is free to pivot about this point without friction. A disk of mass 37.0 g slides toward the opposite end of the

    asked on November 16, 2016
  47. Chemistry!

    Liquid A has vapor pressure X, and liquid B has vapor pressure Y. What is the mole fraction of the liquid mixture if the vapor above the solution is 30% A by moles? 50% A? 80% A? (calculate in terms of x and y) I'm a little bit confused because I thought

    asked on December 21, 2014
  48. physics

    The units of heat are equivalent to those of which one of the following quantities?

    asked on March 6, 2013
  49. physics

    A 50-kg block is pushed a distance of 5.0 m across a floor by a horizontal force Fp whose magnitude is 150 N. Fp is parallel to the displacement of the block. The coefficient of kinetic friction is 0.25. A) What is the total work done on the block? B) If

    asked on February 13, 2012
  50. Calculus

    A ladder 15 feet long is leaning against a building so that end X is on level ground and end Y is on the wall. Point 0 is where the wall meets the ground. X is moving away from the building at a constant rate of 1/2 foot per second. (a.) Find the rate in

    asked on February 5, 2012
  51. Physics

    A mass exerts 45.0N on a 30 kg box, making it slide over a smooth surface for a distance of 10.0m . He stops pushing, just as the box crosses the 10.0m mark. (a) what is the work done by the man on the box? (b) what form of energy does the box posses after

    asked on June 24, 2020
  52. physics

    to push a 25 kg crate up a 27 incline, a worker exerts a force of 120 N, parallel to the incline. As the crate slides 3.6 m, how much work is done on the crate by a) the worker b) force of gravity c) normal force

    asked on October 31, 2011
  53. Algebra/Pre Calc

    A parking lot charges $3 to park a car for the first hour and $2 per hour after that. If you use more than one parking space, the second and each subsequent car will be charged 75% of what you pay to park just one car. If you park 3 cars for t hours, which

    asked on July 7, 2015
  54. Math

    Find the standard deviation for the given data. Round your answer to one more decimal place than the original data. 15, 42, 53, 7, 9, 12, 14, 28, 47 A. 29.1 B. 16.6 C. 17.8 D. 15.8 is it C

    asked on September 23, 2014
  55. college

    If the same amount of heat is supplied to sample of 10.0g each aluminum, iron,and copper all at 15 degrees celsius which sample would reach the highest temperature????

    asked on September 4, 2010
  56. math

    Find the circumference of the circle. Round your answer to the nearest hundredth. Use 3.14 or 227 for π. the radius is 3 ft

    asked on April 20, 2020
  57. Chemistry

    A student collected H2 gas in a buret by displacing water at 22.0 °C. The buret could not be submerged deep enough in a water bath to equalize the pressure. The water level in the buret was 18.2 cm above the water level in the water bath. The volume of

    asked on January 23, 2013
  58. chemistry

    An air bubble has a volume of 0.500 L at 18 C. If the pressure does not change, what is the volume, in liters, at each of the following temperatures? A. 0 C B. 425 K C. -12 C D. 575 K

    asked on July 19, 2010
  59. Pre Calculus

    Find the number of units that produces maximum revenue given by R = 900x-0.1x^2, where R is the total revenue in dollars and x is the number of units sold.

    asked on October 3, 2018
  60. Sat Math

    Gary learned that the value of his car depreciates by 15% per year. Which of the following functions best describes the value of his car the year after the car is worth m dollars? A. f(m) = 0.15m B. f(m) = 0.85m C. f(m) = 1 - 0.15m D. f(m) = 1 - 0.85m

    asked on August 1, 2018
  61. Public Speaking

    For communication to take place, there has to be: A. transmission of the message. B. medium. C. sharing of meaning. D. absence of noise. is it A 2. Which is NOT a benefit of studying public speaking? A. Creates good first impression on others B.

    asked on March 28, 2013
  62. Physics

    Two spheres are cut from a certain uniform rock.One has radius 4.50 cm.The mass of the other is five times greater. Find its radius.

    asked on September 24, 2011
  63. general chemisty

    Calculate the freezing point of a solution of 20.0 g methyl salicylate, C7H6O2, dissolved in 800 g of benzene, C6H6. Kf for benzene is 5.10°C /m and the freezing point is 5.50°C for benzene. A) -1.05°C B) 1.05°C C) 4.45°C D) 6.54°C

    asked on September 26, 2010
  64. algebra

    graph the following function on the set of axes below. f(x) = lxl, -3 less than or equal to x less than 1 and 4, 1 less than or equal to x less than or equal to 8

    asked on March 31, 2016
  65. statistics

    1997, a survey of 940 house holds showed that 15 of them use e-mail. Use those sample results to test the claim that more than 15 % of households use email. use a 0.05 significance level. which of the following is the hypothesis test to be conducted a. h0

    asked on December 10, 2012
  66. Math

    A package of 12 hex bolts and 10 anchor bolts weighs 7 pounds. A second package of 5 hex bolts and 15 anchor bolts weighs 4 pounds. A single hex bolt weighs ___________pounds, rounded to one decimal place.

    asked on July 27, 2015
  67. Could you please check over my english? :)

    I'm working on an English assignment and I've answered most of them, but I'm not too sure about these ones.. If you could check over my answers that would be amazing! Thank you so much in advance :) In the following sentences identify the main clause. Find

    asked on December 13, 2011
  68. Physics

    A football player kicks a field goal, launchingthe ball at an angle of 48" above the horizontal. During the kick, the ball is in contact with the player's foot for 0.045 s, and the ball's acceleration is 290 m/sz. Vvhat is the range of the football?

    asked on October 10, 2017
  69. Math

    A bag of candy contains 11 peppermints, 8 chocolates,13 gumdrops, and 9 licorices. jack randomly takes a gumdrop from the bag and eats it. what is the probability that the next candy she takes will be a gumdrop or a peppermint?

    asked on July 12, 2017
  70. Physics

    A 710kg car drives at a constant speed of 23m/s . It is subject to a drag force of 500 N. What power is required from the car's engine to drive the car (a) on level ground? (b) up a hill with a slope of 2.0∘ ?

    asked on November 23, 2013
  71. Physics

    A 0.450 kg hammer is moving horizontally at 8.00 m/s when it strikes a nail and comes to rest after driving it 1.00 cm into a board.(a) Calculate the duration of the impact.(b) What was the average force exerted on the nail?

    asked on July 14, 2013
  72. Physics

    A person carries a plank of wood 2 m long with one hand pushing down on it at one end with a force F1 and the other hand holding it up at 50 cm from the end of the plank with force F2. If the plank has a mass of 20 kg and its center of gravity is at the

    asked on July 14, 2013
  73. Physics Help Please!

    A microwave oven operates at 2.80GHz . What is the wavelength of the radiation produced by this appliance?

    asked on November 3, 2012
  74. English/ 11th grade

    Analyze the sentence to select the adverb clause, subordinating conjunction, and the word(s) modified in the appropriate boxes below... 1)When you obey your parents, you please the Lord. Adverb clause: When you obey your parents Subordinating conjunction:

    asked on November 17, 2011
  75. Math: does anyone know how to solve this

    1 + tan^2 (5) - csc^2 (85) = ? Would this equal 0 could someone explain this to me and the correct answer?

    asked on March 1, 2011
  76. math

    the probability of a computer memory chip being defective is 0.02. which of ghe following statements is true? a) in a shipment of 1000 chips, it is certain that at least one will be defective. b) in a shipment of 100 chips, two will be defective c)the

    asked on January 23, 2011
  77. Calculus

    Use a linear approximation (or differentials) to estimate the given number. (32.06)^4/5

    asked on November 18, 2010
  78. production and operations management

    5. All of the following statements about ABC analysis are true except: A. Inventory may be categorized by measures other than dollar volume B. It categorizes on-hand inventory into 3 groups based on dollar volume C. It is an application of the Pareto

    asked on July 29, 2010
  79. Chemistry

    For the following balanced equation: 2 Ag+ (aq) + Cu(s) ---> Cu2+ (aq) + 2 Ag(s) Which letter corresponds to the correct cell notation at standard state conditions? A. Cu2+(aq)/ Cu(s) // Ag(s) / Ag+(aq) B. 2Ag+(aq)/ Cu2+(aq)// 2Ag(s)/ Cu(s) C. Ag+(aq) /

    asked on May 8, 2008
  80. Science

    Write the following in scientific notation in their respective SI units ( 3 dig fig) a) 286.6 km b) 0.864um c) 760mg d) 62.1 ps

    asked on June 4, 2020
  81. Math

    An actress has a probability of getting offered a job after a try-out of 0.11. She plans to keep trying out for new jobs until she gets offered one. Assume the outcomes of try-outs are independent. Find the probability she will need to attend more than 7

    asked on March 10, 2020
  82. Chem

    The mass of a beaker is 5.333g. After 5.00 mL of a concentrated hydrochloric acid solution is pipetted into the beaker, the combined mass of the beaker and the hydrochloric acid sample is 11.229 g. From the data, what is the measured density of the

    asked on September 1, 2015
  83. Statistics

    The following data set is the GPAs of the students in a statistics class. 1.93, 1.99, 2.00, 2.04, 2.12, 2.34, 2.55, 2.55, 2.75, 2.75, 2.80, 2.80, 2.85, 3.02, 3.12, 3.22, 3.31, 3.33, 3.45, 3.69 What percentile is a GPA of 2.34? A. About the 6th B. About the

    asked on September 23, 2014
  84. Statistics

    1. A poll of 700 persons attending the Taste of Chicago showed that 455 persons, 65% of the sample, believed that the food was overpriced. It is estimated that 1,250,000 persons attend the Taste. Statistics suggest that, although 65% plus or minus 5% of

    asked on September 12, 2014
  85. History

    During the Zhou dynasty, China: A. abolished slavery in order to increase agricultural production. B. large-scale water control programs were undertaken to regulate the flow of rivers and distribute water to the fields. C. continued to consider merchants

    asked on January 13, 2014
  86. Calculating Rate Constants

    I'm really stuck with this one. Here's the rate law and the data that is needed. I appreciate any help Rate= k[I2]X{[H+]Y[CH3COCH3]Z Column 1 - Trial Column 2 - Volume of 0.0010 M I2 Column 3 - Volume of 0.050 M HCl Column 4 - Volume of 1.0 M acetone

    asked on February 13, 2013
  87. Chemistry - Lewis Dots

    Draw the molecule by placing atoms on the grid and connecting them with bonds. Do not identify the charge on each of these species. Include all lone pairs of electrons. H3COCH3 Draw the ion by placing atoms on the grid and connecting them with bonds. Do

    asked on December 4, 2012
  88. Chemistry

    If 1.0 mL of 6.0M HCl is added to 499 mL of water to give exactly a 500 mL solution, what is the molarity of the dilute solution?

    asked on May 6, 2012
  89. Calculus-rates

    1.) A man 6 ft tall walks at a rate of 5 ft per sec. from a light that is 15 ft above the ground. At what rate is the top of his shadow changing? 2.) An airplane flies at an altitude of 5 miles toward a point directly over an observer. The speed of the

    asked on May 5, 2011
  90. math

    Write the converse of this statement. If 2 's are supplementary, then they are not equal. Converse:

    asked on March 30, 2010
  91. word unscramble

    need help unscrambling a word or words tarluna what is it HELP ME UNSCRAMBLE THESE LETTERS TO MAKE A WORD THAT PERTAINS TO SPACE AND IS A P POSSESSIVE NOUN. SEGHRTMLAN J'aodredefis Please post the word or words you need to unscramble, and we'll try to help

    asked on September 28, 2006
  92. physics

    A rotating wheel requires 7.00 s to rotate 28.0 revolutions. Its angular velocity at the end of the 7.00-s interval is 97.0 rad/s. What is the constant angular acceleration (in rad/s) of the wheel? rad/s2

    asked on October 17, 2016
  93. Technical wrtiting

    Internet Source Distortion/Misrepresentation From media,or the Internet, identify an example of each of the following sources of distortion (faulty causal and/or statistical inference) a. A study with questionable sponsorship or motives b. Reliance on

    asked on October 10, 2015
  94. Math

    a punter kicked the football into the air with an upward velocity of 62 ft/s. its height in feet after t seconds is given by the function h = -16t^2 + 62t +2. What is the maximum height the ball reaches? How long will it take the football to reach the

    asked on March 8, 2015
  95. constitution

    Which of the following best describes the impeachment process? A. The Senate impeaches and the House tries the impeachment. B. The Senate impeaches and tries the impeachment. C. The House impeaches and the Senate tries the impeachment. D. The House

    asked on January 17, 2015
  96. Chemistry

    Gaseous methane (CH4) reacts with gaseous oxygen gas (O2) to produce gaseous carbon dioxide (CO2) and gaseous water (H2o) . What is the theoretical yield of carbon dioxide formed from the reaction of 0.16g of methane and 0.83g of oxygen gas?

    asked on December 6, 2014
  97. Math

    Write the equivalent number in standard notation. 9x10^-4

    asked on January 22, 2014
  98. statistics

    Tall clubs international is a social organization for tall people. It has a height requirement that men must be at least 74 in. and women must be at least 70 in. tall. If men's heights have a normal mean of 69.0 in and a deviation of 2.8 and women's normal

    asked on November 4, 2013
  99. physics

    Assume that the left side of your heart creates a pressure of 114 mm Hg by exerting a force directly on the blood over an effective area of 16.0 cm2. What force does it exert to accomplish this?

    asked on July 18, 2013
  100. math

    Catherine borrowed $19,000 on June 20, at 10% interest. If the loan was due on September 17, what was the amount of interest on the loan using the exact interest method?

    asked on June 23, 2013


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