Questions Asked on
June 3, 2012

  1. Chemistry

    Consider two cells, the first with Al and Ag electrodes, and the second with Zn and Ni electrodes, each in appropriate 1.00M solutions of their ions. If 2.10g of metal is plated in the voltaic cell, how much metal is plated in the electrolytic cell?

    asked by Katherine
  2. Chemistry

    Calculate delta G of the reaction at 25 degrees C: 2Au^3+ (aq) + 3Ni(s) 2Au(s) + 3Ni^2+(aq) Au3+ + 3e- ==> Au Eo = +1.50V Ni2+ + 2e- ==> Ni Eo = -0.23 V 2Au3+ + 3Ni ==> 3Ni2+ + 2Au The answer is -1.00 x 10^3 kJ but i'm not getting that answer!!!!!!! please

    asked by Katherine
  3. Chemistry

    A current of 5.18 A is pass through a Cr(NO3)2 solution for 1.20 hours. How much chromium is plated out of the solution? __g I have no idea how to approach this. Here's what I tried to do logically but I'm not sure if it works out: I know that the

    asked by Katherine
  4. physics

    Residents of Hawaii are warned of the approach of a tsunami by sirens mounted on the tops of towers. Suppose a siren produces a sound that has an intensity level of 120 dB at a distance of 2.0 m. How far away can the siren be heard?

    asked by Mike
  5. Physics(Please help, thank you)

    1) A student, starting from rest, slides down a water slide. On the way down, a kinetic frictional force (a nonconservative force) acts on her. The student has a mass of 71 kg, and the height of the water slide is 12.0 m. If the kinetic frictional force

    asked by Hannah
  6. Physics(please help)

    Four very thin rods, each 8.3 m long, are joined to form a square. The center of mass of the square is located at the coordinate origin. The rod on the right is then removed. What are the x- and y-coordinates of the center of mass of the remaining

    asked by Hannah
  7. Physics(Please help)

    A high-jumper clears the bar and has a downward velocity of -6.00 m/s just before landing on an air mattress. The mass of the high-jumper is 53.7 kg. What is the magnitude and direction of the impulse that the air mattress exerts on her? Assume that upward

    asked by Hannah
  8. ALGEBRA

    Assume that a dart is randomly thrown at the dartboard shown here and strikes the board every time. The payoffs are listed on the board. How much should you be willing to pay for the opportunity to play this game? (Give your answer to the nearest cent.)

    asked by Mike
  9. Physics

    A 1,500kg truck moving at 15 m/s strikes a 750 kg automobile stopped at a traffic light the vehicle. The vehicles hook bumpers and skid together at 10 m/s. What is the decrease in kinetic energy?

    asked by Steve
  10. math

    In your biology class, your final grade is based on several things: a lab score, scores on two major tests, and your score on the final exam. There are 100 points available for each score. However, the lab score is worth 16% of your total grade, each major

    asked by Ashley
  11. Science/Physics

    Explain why a rapidly spinning gyroscope, mounted in a frame that allows it to rotate in any direction independently of the frame’s rotation, tends to maintain its axis pointed in the same direction in space. I just am not getting this!

    asked by Elizabeth
  12. physics

    A 0.200 kg block of ice at 15ºC is placed into a pan on a stove, heated to a liquid, and then to vapour with a final temperature of 115ºC. Calculate the total amount of heat required for this process.

    asked by shan
  13. physics

    A building has become accidentally contaminated with radioactivity. The longest-lived material in the building is strontium-90. (The atomic mass of Sr is 89.9077 u.) If the building initially contained 4.8 kg of this substance and the safe level is less

    asked by andrew
  14. Physics

    A rotating space station has radius 1270 m, measured from the center of rotation to the outer deck where the crew lives. What should the period of rotation be if the crew is to feel that they weigh one-half their Earth weight? I got 101.1 seconds... is

    asked by Brandi
  15. Physics

    A plane leaves Seattle, flies 84.0 at 21.0 north of east, and then changes direction to 53.0 south of east. After flying at 125 in this new direction, the pilot must make an emergency landing on a field. The Seattle airport facility dispatches a rescue

    asked by Sara
  16. Chemistry

    The voltage generated by the zinc concentration cell described by, Zn(s)|Zn2+ (aq, 0.100 M)||Zn2+ (aq, ____ M)|Zn(s) is 24.0 mV at 25 °C. Calculate the concentration of the Zn2 (aq) ion at the cathode. My textbook advised me to use the Nernst Equation and

    asked by Katherine
  17. Physics(Please check)

    A car (mass = 1140 kg) is traveling at 27.3 m/s when it collides head-on with a sport utility vehicle (mass = 2380 kg) traveling in the opposite direction. In the collision, the two vehicles come to a halt. At what speed was the sport utility vehicle

    asked by Hannah
  18. Alg I

    One type of decorative ribbon regularly costs $3.59 per yard. When the ribbon is on sale, it cost $2.19 per yard. Which is the closest to the difference in the cost per inch for the ribbon when it on sale compared to its regular price? A. 1.9 cents per

    asked by Jane
  19. Chemistry

    a basketgball is inflated to a pressure of 1,50 atm in a 20.c garage. What is the pressure of the basketball outside whre the temperature is -5.00 C?

    asked by Mary
  20. statistics

    of the physics graduates of a university, 35% received a starting salary of $50,000 or more. If 5 of the graduates are selected at random, find the probability that all had a starting salary of $50,000 or more.

    asked by SMREY
  21. physics

    Two crates A and B connected together by a light rope are pulled along a factory floor by an applied force, F. Crate A has a mass of 50 kg and the coefficient of friction (μ) between crate A and the floor is 0,25. Crate B has a mass of 35 kg and μ

    asked by Nick
  22. Bus Stat

    Statistics: Many track hurdlers believe that starting in the inside lane closest to the field has better chance of winning. closest to the field is lane 1, nxt is lane 2, etc until Lane 6. find the critical value x20 to test the claim that the

    asked by Barbara
  23. Math

    Vanessa has 17 quarters, 8 dimes, 15 pennies, and 14 nickels in a piggy bank. Which of the following measures of central tendency will change if she spends 4 quarters to get a soft drink? Mean, median, mod, or none will change? Why?

    asked by Jane
  24. math

    The call letter of a radio station must have 4 letters.The first letter must be a K or a W. How many different station call letters can be made if repetitions are not allowed? *(If repetitions are allowed?)* *Important

    asked by Ellen
  25. college ststistics

    A. find the binomial probability p(x=5) where n=14 and p=0.30. B. setup without solving the binomial probability p(x is at most 5) using probability notation C. how would you find normal approximation to the binomial probability p(x=5) in part A. please

    asked by melba
  26. General Chemistry

    If 50.0grams of copper initially at 145.0 C is put into 150.0mL of water initially at 25.00C, then what will the final temperature of the mixture be? assume that all of the heat lost by the hot copper is absorbed by the cold water.

    asked by Mqureshi
  27. Calculus - Optimization

    A cylindrical container with a volume of 3000 cm^3 is constructed from two types of material. The side and bottom of the container cost $0.10/cm^2 and the top of the container costs $0.20/cm^2. a) Determine the radius and height that will minimize the

    asked by Nevin
  28. Physics PLEASE HELP

    Nitrogen gas molecules, which have mass 4.65×10−26 kg, are striking a vertical container wall at a horizontal velocity of positive 440 m/s. 5.00×1021 molecules strike the wall each second. Assume the collisions are perfectly elastic, so each particle

    asked by Christina
  29. Alg I

    Please explain how to solve: Laura can pressure wash her driveway at an average rate of 15 square feet per minute. Which is closest to this rate in square yards per second? A. 0.35 B. 0.24 C. 0.03 D. 0.01

    asked by Jane
  30. finance please help

    1. Calculate the present value of an investment given the following information: (a) Years—20, (b) Rate—10%, and (c) Future Value—$20,000. 2. Calculate the future value of an investment given the following information: (a) Years—10, (b) Rate—5%,

    asked by bibi Please help
  31. Chemistry (11th grade)

    we have the following equation- 2HCl+CuSO4 yields H2SO4+CuCl2. the question is if 7 moles of HCl react, how many moles of H2SO4 will be produced?

    asked by scott swing
  32. factoring

    is x^3 +8 factorable?

    asked by skye
  33. Physics(Please respond)

    1)A 1180-kg van, stopped at a traffic light, is hit directly in the rear by a 753-kg car traveling with a velocity of +1.81 m/s. Assume that the transmission of the van is in neutral, the brakes are not being applied, and the collision is elastic. What is

    asked by Hannah
  34. math

    The call letter of a radio station must have 4 letters.The first letter must be a K or a W. How many different station call setters can be made if repetitions are not allowed? If repetitions are allowed? I have the answers just need to know the work

    asked by Ellen
  35. Chemistry

    5g of calcium carbonate reacted with 0.5mols of sulfuric acid, what mass of carbon dioxide is produced?

    asked by Monique
  36. chemistry

    calculate how much strontium fluoride will dissolve in 1L of water given Ksp= 2.5x10^-9 at 25 degree celsius

    asked by lily
  37. health

    If an institutional review board is involved in a request for information, the information is likely sought by a what?

    asked by carrie
  38. Math

    Can someone please help me find the derivative of the following: y = (-9e^7x) / (5x+3) Thank you!

    asked by Francesca
  39. Statistics

    The call letter of a radio station must have 4 letters.The first letter must be a K or a W. How many different station call setters can be made if repetitions are not allowed? If repetitions are allowed?

    asked by Ellen ""Urgent""
  40. science-hydrophonics

    the advantage of gravel is : the disadvantage of gravel: the advantage of sand the disadvantage of sand

    asked by Celest
  41. finance, please help

    1. Calculate the present value of an investment given the following information: (a) Years—20, (b) Rate—10%, and (c) Future Value—$20,000. 2. Calculate the future value of an investment given the following information: (a) Years—10, (b) Rate—5%,

    asked by farah
  42. physics

    After 1.84 days, the activity of a sample of an unknown type radioactive material has decreased to 85.8% of the initial activity. What is the half-life of this material? (in days)

    asked by andrew
  43. Chemistry

    By using the data in this question, estimate how much oxygen a person requires on average in a life time and how far a motor can go using the same amount of oxygen. the typical daily food requirement of a person can be considered to be 1.2 kg of

    asked by Cherie
  44. calculus

    Leave any unneeded answer spaces blank. [Hint: use synthetic division to solve.] f(x) = (1x^3 - 3x^2 - 25x + 75)/(1x^3 - 19x^2 + 118x - 240) the roots of f(x), in increasing order is/are.... ___, ___, ___ f(x) h!@#$%^&s when x is... ___, ___, ___ f(x)has

    asked by gloria
  45. calculus

    f(x)= (5x^4 + 5x^3 + 6x^2 + 8x + 5)/(1x^4 + 1x^3 + 1x^2 - 9x + 4) What is the equation of the horizontal asymptote? y = ___? Does the graph of f(x) intersect its horizontal asymptote? (yes or no) If yes, at what x-values does f(x) intersect its horizontal

    asked by gloria
  46. Physics HELP!

    An ant and a beetle are riding a spinning record on a record player. The ant stands on the outside edge of the record while the beetle stands on the record's label. The ant is four times as far from the center of rotation as the beetle. What is the ratio

    asked by Megan
  47. Physics

    A sheet of siding has a centrally-located doorway of width 2.0 m and height 6.0 m cut out of it. The sheet, with the doorway hole, has a mass of 264 kg. (a) What is the x coordinate of the center of mass? (b) What is the y coordinate of the center of mass?

    asked by Amanda
  48. physics

    Calculate the speed of sound wave in air if its frequencies and wavelengths are 256Hz and 1.32m

    asked by Melissa
  49. ALGEBRA

    Please round to one decimal place for me 90.6

    asked by Urgen please help
  50. math

    A glass in the form of a frustum of a cone is represented by the diagram below. The glass contains water to height of 9 cm. The bottom of the glass is circle of radius 2cm while the surface of the water is a circle of radius 6 cm. (a) Calculate the volume

    asked by Anonymous
  51. chemistry

    Calculate the molality of a 1.00% by weight sulfuric acid solution if the density of the solution is 1.0054 g/mL. thanks for your help!

    asked by Anonymous
  52. Calculus

    f(x)= (-5x^3 + 3x^2 + 3x -5)/(-8x^2 +2x + 7) Find the equation of the non-vertical asymptote. y = ? Does f(x) intersect its non-vertical asymptote? (yes or no) If yes, what is the smallest value of x at which f(x) intersects its non-vertical asymptote?

    asked by gloria
  53. Chemistry

    Consider the following equilibrium at 1000K: 2SO2 (g) + O2 (g) ¡ê 2SO3 (g) A study of this system reveals that there are 3.5E-3 moles of sulfur dioxide gas, and 4.8E-3 moles of oxygen gas present in a 11.0L flask at equilibrium. The equilibrium constant

    asked by please help!
  54. Physics(Please respond)

    A water-skier is being pulled by a tow rope attached to a boat. As the driver pushes the throttle forward, the skier accelerates. A 83.9-kg water-skier has an initial speed of 6.3 m/s. Later, the speed increases to 10.1 m/s. Determine the work done by the

    asked by Hannah
  55. Art

    Thank you very much, Writeacher. 1) Can you help me find online exercises on sentence connectors (expressing addition, contrast, etc). I need my students to practise how to write a cohesive paragraph (including an introduction and a conclusion). By the

    asked by Franz
  56. accounting

    James, Inc. discovered that equipment purchased three years ago for $600,000 will not last as long as originally estimated. The firm was depreciating the equipment at the rate of $80,000 per year with an estimated salvage value of $40,000. New estimates

    asked by T Smith
  57. Psychology of Learning

    Olds and Milner (1954) performed experiments on rats to determine:

    asked by bk
  58. chemistry

    What mass of K2CO3 is required to clean up a spill of 339 ml of 2.65 M HCl if HCl(aq) reacts with K2CO3 according to 2HCl(aq) + K2CO3(aq) ¨ 2KCl(aq) + CO2(g) + H2O(l)?

    asked by Anonymous
  59. HCR 210

    Select an accreditation agency and name an area of records management that is affected by its guidelines. How does accreditation affect the practical activities of record management in hospitals?

    asked by Barbara
  60. ALGEBRA

    Suppose that people's heights (in centimeters) are normally distributed, with a mean of 175 and a standard deviation of 6. We find the heights of 60 people. (a) How many would you expect to be between 167 and 183 cm tall? (b) How many would you expect to

    asked by Urgen please help
  61. science- hydroponics

    the advantage of gravel is that it makes it better to grow plants that you eat? the disadvantage of gravel is that gravel can not hold the plant?

    asked by Celest
  62. chemistry / help please

    What is the name of: ZnNO3, of (NH4)2O, of Rb3PO4, or NH4ClO4?

    asked by chris
  63. Statistics

    Assume that a population is normally distributed with a mean of 100 and a standard deviation of 15. Would it be unusual for the mean of a sample of 3 to be 115 or more? Why or why not?

    asked by Anonymous
  64. chemistry

    how to calculate molar concentration of a 500 millimeter solution that contains 20 gram of CaBr2 ?

    asked by star
  65. Art

    Can you also help me find online material on how to write a "tale"? I should also refer to Poe's tales and its main features. Can you think of another important American writer of tales? Thank you very much, Writeacher!!

    asked by Franz
  66. algebra

    Find the variation constant and an equation of variation where y varies directly as x and y =4 when x=1. the variation constant is K= the variation constant is y =

    asked by plz hlp
  67. statistics

    Reading placement scores for a particular college are normally distributed with a mean of 72 and a standard deviation of 7. a) draw a sketch of the reading placement scores for students at this college. be sure to mark the mean and also to mark one and two

    asked by whitney
  68. English

    i not get what this poem mean it be a ballad but i not get what theme be do the guy girl be in strong bond? True Thomas lay on Huntlie bank; A marvel he did see And there he saw a ladye bright Come riding down by the Eildon Tree. Her skirt was o' the

    asked by Mohammad
  69. Art

    I need to prepare a short dissertation on the dystopian novel and the theme of totalitarianism or subordination (the parody of Stalin, Hitler, Winston Smith and Winston Churchill). Here is a short summary of Huxley’s novel “Brave New World”. Could

    asked by Franz
  70. business law

    A Fortune 500 CFO admits to having deliberately treated $4 billion in operating expenses as assets, thereby allowing the corporation to show profits instead of losses. The auditor never detected this. The corporation’s stock drops 95 percent and bond

    asked by Lily
  71. Physics(Please respond)

    1) A roller coaster (398 kg) moves from A (3.82 m above the ground) to B (29.4 m above the ground). Two non-conservative forces are present: friction does -1.82 x 104 J of work on the car, and a chain mechanism does +5.49 x 10^4 J of work to help the car

    asked by Hannah
  72. Physics(Please help)

    A skier slides horizontally along the snow for a distance of 11.9 m before coming to rest. The coefficient of kinetic friction between the skier and the snow is 0.0458. Initially, how fast was the skier going? I do not know how to start this. Thank you.

    asked by Hannah
  73. physics

    Brandy is made by distilling ethyl alcohol, which is done by boiling the alcohol until it turns into a gas. How much heat is required to completely distil 0.750 kg of ethyl alcohol?

    asked by shan
  74. Physics(Please help)

    1) A man (mass = 80.9 kg) jumps straight down from a bridge into a boat (mass = 482 kg) in which a criminal is fleeing. The velocity of the boat is initially +14.5 m/s. What is the velocity of the boat after the man lands in it? would I subtract the two

    asked by Hannah
  75. Math

    So I have to draw two rectangles on graph paper that each have to fit in a 15 by 20 block. The first rectangle can be what ever size you want but the second one needs be similar with a 3/5 ratio of the first. I can't figure out what their sizes should be.

    asked by Marie
  76. Science - Homework Qs.

    2. What happens to the population of a species when these resources decrease? my answer - when the resources decrease the population of the species will be dead right?????? (please be honest)

    asked by Laruen
  77. Science - HW qs. check

    6. What happened to the population of deer when the wolves were introduced? Explain why? When the wolves are introduced, the population of deer will decrease because wolves eat deers??? right?????

    asked by Laruen
  78. Science

    Can you please check if my part on science is grammatically correct? Thank you very much, Writeacher. 1) In 1951 an American woman descended from African slaves freed named Henrietta Lacks, was admitted to Johns Hopkins Hospital in Baltimore. 2) In those

    asked by Franz
  79. Calculus

    Find the volume of the solid generated by the region in the first quadrant bounded above by the 3x+y=6, below by the x-axis, and on the left by the y-axis, about the line x= -2.

    asked by Liz
  80. Algebra

    A temperature of 30 degrees F is equivalent to 271.89 degrees K, while a temperature of 94 degrees F is equivalent to 307.44 degrees K. Find the equation converting Kelvin temperature to Fahrenheit. What is the Fahrenheit temperature when it is 212 degrees

    asked by Vilma
  81. chem

    how are the length of single, double, and triple bonds between the same kinds of atoms compare?

    asked by skye
  82. chemistry

    By using the data in this question, estimate how much oxygen a person requires on average in a life time and how far a motor can go using the same amount of oxygen. the typical daily food requirement of a person can be considered to be 1.2 kg of

    asked by Anonymous
  83. Chemistry

    A sample of methane gas at room temperature has a pressure of 1.50 atm and a volumne of 10.5 L. If the temperature is kept constant, what will be the new volume if the pressure is increased to 2.00 atm?

    asked by Mary
  84. math

    After several drinks, a person has a blood alcohol level of 220 mg/dL (milligrams per deciliter). If the amount of alcohol in the blood decays exponentially, with one fourth being removed every hour, find the person's blood alcohol level after 4 hours

    asked by lily
  85. math/algebra

    I’m working at this restaurant making $30,000 a year. Another restaurant really wants to have me manage their restaurant they are offering to pay me 2 ¾ times more then I make now. How much would I be making? show this is done please

    asked by toni
  86. math

    You need to hire a part-time associate to work 30 hours a week in your store. You have $250 in labor budget for the new associate each week. You just interviewed an excellent candidate for the position who has requested to be paid $9.00 per hour. Your

    asked by Anonymous
  87. Math

    Given the graph of y = g(t), determine the value of t for which g(t) = −3 . Answer as an integer.

    asked by Hanu
  88. Art

    Here is the second part of the summary. Thank you, Writeacher. 1) Huxley describes a utopian society determined by a scientific caste system in which human beings are born artificially on an “assembly line” divided into different categories which

    asked by Franz
  89. math

    create a situation that can be modelled by this linear system, then write a related problem. 10x + 5y = 850 x - y = 10

    asked by emily
  90. math

    The ticket machine at the service counter was not operating correctly and began to skip every third ticket, beginning with ticket 430. how many tickets were skipped between ticket 431 and ticket 444?

    asked by gary
  91. English

    Please check. I. Correct any errors in the following sentences. Do not use different verbs (for example, “recline” instead of “lie down”). Provide the correct form of the verb given: 1. Yesterday I let my students lay down for a nap, but most of

    asked by Ashley
  92. Informal Logic

    A conditional sentence with a false antecedent is always true false Cannot be determined not a sentence i believe it is true but unsure Please help me

    asked by Rae
  93. Functions

    How do you determine (without graphing) if the polynomial has line symmetry about the y-axis, point symmetry about the origin, or neither. The function is: f(x)= -x^5 + 7x^3 + 2x

    asked by Seinna
  94. Math

    in the center of the first sheep of graph paper, draw a figure with straight sides that will fit in a 15 by 20 block (the figure can be hard or easy so I was thinking of going with a simple rectangle). On the second sheet of graph paper draw the same

    asked by Marie
  95. computers

    who created coach leather

    asked by brianna
  96. physics

    An object has a height of 65 cm and is positioned 6.2 m in front of a spherical mirror. Its image distance is 1.9 m. Calculate the height (including its sign) of the image in centimeters.

    asked by Kara
  97. college statistics

    a set of data is normally distributed with a mean of 1000 and a standard deviation of 100.what would be standard score for a score of 900.what percent of scores is betyween 1000 and 900.what would be percentile rank for a score of 900.

    asked by melba
  98. english

    THANK U SOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOO MUCH FOR THE INFORMATION MS.SUE

    asked by Blair
  99. HIS 103

    hat factors explain medieval Islam's relatively high level of tolerance for non-believers, and did regions controlled by the Roman Catholic Church share that broad acceptance?

    asked by Maryann
  100. HIS 103

    Roman" other than its formerly being part of the Roman Empire? How Roman was it when it spoke Greek and, after the 11th century, was no longer Catholic?

    asked by Maryann
  101. Science/Biomaterials

    Given the following properties, how much stretch would you expect to occur in a specimen of polyethylene to which a tensile load is applied? l = change in length Length = 10 cm Cross-Sectional Area = 1 cm2 Young's Modulus = 200 GPa Applied Load = 1000 kN

    asked by James
  102. Art

    I left out the following sentences. Thank you very much, Writeacher. 1) He feels tenfold more evil than Hyde but also more free. 2) He realizes a potion capable to split up his soul, to separate the good side from the evil one. 3) The image of his friend

    asked by John
  103. algebra

    Hat sizes determined by measuring the circumference of one's head in either inches or centimeters. Use ratio and proportion to complete the following table. Hat size Head circumference Head circ 71/4 to nearest 1/5 in. near cm.

    asked by Randy
  104. Physics

    A rollercoaster car speeds up and down a hill past points a, b, and c as shown. The car has a mass of 500 kg and a speed of 25.0 m/s at point B where the track radius is 10 m. A: What is the maximum speed the car can have at point c, radius 19.6 m, for the

    asked by Bobby
  105. Math

    The ratio of the cost of an adult ticket to a student ticket for the circus is 5:3. If $32 is the total spent on tickets, how much was each adult ticket and how much was each student ticket?

    asked by Larry
  106. Art

    I left out the following sentences. Thank you, Writeacher. 1) The poet sees his dying friend as if he were (was??) drawning in the deadly gas. 2) The memory of his dying friend returns in the poet's dreams (nigtmares is possible?).The poem is addressed to

    asked by Franz
  107. nutrition in drinks

    1.homany kj per 100ml in 2 Lt.apple juice? 2.sodium per 100ml? 3.sugar per 100ml.?

    asked by merve
  108. Physics(Please help)

    1)A 1180-kg van, stopped at a traffic light, is hit directly in the rear by a 753-kg car traveling with a velocity of +1.81 m/s. Assume that the transmission of the van is in neutral, the brakes are not being applied, and the collision is elastic. What is

    asked by Hannah
  109. Why Viscosity of honey change when water is added

    Why does the viscosity of honey change when water is added to it? I have seached the whole internet but can someone please explain this to me in forms of year 11 chemistry. Is it because water is less viscous then honey and so when added to honey the

    asked by Anushka Sharma
  110. algebra

    A sample of 134 firecrackers contained 6 duds. How many duds would you expect in a sample of 2,546?

    asked by Randy
  111. science-check

    what is the advantages and disadvantages of using sand to grow? the advantage is that it anchors it? the diadvantage is it cant hold the plant up?

    asked by Celest
  112. math

    Graph y = ½ x^2 – x +3 for 0≤x≤6 (b) Calculate the mid- ordinates for 5 strips between x = 1 and x 6, and hence use the mid-ordinate rule to approximate the area under the curve between x = 1, x = 6 and the x- axis. (c) assuming that the area

    asked by Anonymous
  113. physics

    The coordinates of an object moving in the xy plane vary with time according to the equations x = −6.85 sin ùt and y = 4.00 − 6.85 cos ùt, where ù is a constant, x and y are in meters, and t is in seconds. (a) Determine the components of velocity of

    asked by eric
  114. hcs 545

    Write a 1,400- to 1,750-word paper on a current health care situation. For example, common issues might include one of the following: physician or employee with a conflict of interest, health care fraud and abuse, medical error, quality of care issues,

    asked by health care
  115. Technical Communication

    A structured process that gathers information about specific use from people similar to the intended users is called?

    asked by Anonymous
  116. physics

    a person completes 5 rounds of a field. if radius of the field is 70m , calculate the distance and the displacement covered by the person during his trip .

    asked by anshita
  117. chemistry

    an engine operating between 100 degree celsius and 0 degree celsius takes 453.6 k cal of heat. The usefull work done by it is ? plz teach me the way of calculating it

    asked by star
  118. Physics(Please respond)

    1) David has a mass of 86.4-kg and is skating with in-line skates. He sees his 24.8-kg younger brother up ahead standing on the sidewalk, with his back turned. Coming up from behind, he grabs his brother and rolls off at a speed of 2.99 m/s. Ignoring

    asked by Hannah
  119. Science - HELP!!!!

    in general, are wildlife population constant or do they tend to fluctuate? Explain. In science on friday we played this game called "Oh Deer". If you google it and click on the first one and read it you'll get a better understanding. please help im

    asked by Laruen
  120. Math

    For what value of b will the polynomial P(x) = 4x^3 - 3x^2 + bx + 6 have the same remainder when it is divided by x - 1 and by x + 3?

    asked by Labz
  121. MATH

    The breaking strength (in pounds) of a certain new synthetic is normally distributed, with a mean of 175 and a variance of 9. The material is considered defective if the breaking strength is less than 166 pounds. What is the probability that a single,

    asked by Anonymous
  122. FACS

    The what of a microwave oven is the amount of electricity used to create microwaves?

    asked by Laruen
  123. goal writing

    can you give me some ideas on writing goals and a action plan for starting college

    asked by sandra
  124. english

    i am writing a speach . and i need your help to give me 15 ideas .the speach is if i ruled the world . (tell me your ideas)

    asked by Blair
  125. college ststistics

    find area under the standard normal curve A). p(z>0.58) B. p(-1.10

    asked by melba
  126. math

    i need a tip on function table please

    asked by Anonymous
  127. psychology

    Hello, where can I look to find the answer for how are research methods Godly?

    asked by Thomas
  128. chemistry/help

    In solid form, what element has the lowest density? Which has the highest density? 1. Hydrogen is the lowest density solid 2.which element has the highest?

    asked by chris
  129. Math

    Please for an example of statistical reporting.

    asked by Juanita
  130. PSY 240

    How will you answer this question. I don't eat beacuse every time I do, I just feel sick! Do you know why this is?

    asked by Anonymous
  131. math

    what is different between a decimal and a decimal point?

    asked by don
  132. math

    there are 23 of? in 2.3

    asked by don
  133. math

    In a car race, there are 6 chevrolets, 4 fords, and 2 pontiacs. In how many ways can the cars finish if we consider only the makes of the cars?

    asked by Brian
  134. FSFG

    HOW CAN YOU DIVIDE IMPROPER FRACTION

    asked by Anonymous
  135. math geometry

    what conclusion states the equality of the measures of two angles for CD bisects angle ABC?

    asked by rebecca
  136. how to find domain and range

    how do I find the domain and range of y= 5/(2x+1) -4

    asked by skye
  137. health

    How is the nervous system used when you eat

    asked by xx
  138. PHSYICS 12 HELP PLEASE!

    Determine the specific gravity of a fish which masses 320g in air and has an apparent mass of 21g in water

    asked by VIJ
  139. accounting

    How can we pass the entry in journal and how can we check that which expenses comes in debit side nd which comes in credit side?

    asked by Sania zehra
  140. accounting

    amair started the business with a capital of rs60000 on 1jan 2009 during the year he had with drawn goods rs8000 and cash rs5000for personal use he has also paid life insurance premium rs.2000 he had aiso introduced additional capital of rupees 20000 on

    asked by misba
  141. science-hydroponics

    what is the advantage and disadvantage of growing plants with sand?

    asked by Celest
  142. ALGEBRA

    A class obtained the following scores on a test. Find the mean, the median, the mode, and the range for the class. Test Score Frequency 90 2 80 2 70 12 60 4 50 3 40 2 (a) Find the mean = I had the median, mode and the range correct except the Mean, please

    asked by Urgen please help
  143. math

    i am very confused with the question: when a cross tile is placed on a number chart no matter how large the cross tile becomes the number covered by the centre of the cross-tile is the average of all of the numbers covered.

    asked by Anonymous
  144. physics

    A car that is traveling at 28.16 m/s is going about

    asked by Anonymous
  145. chemistry

    how will know the hydroxide concentration for a solution with a pH of 10 at 25 degree celsius?

    asked by star
  146. chemistry

    In solid form, what element has the lowest density? Which has the highest density? -Hydrogen is the lowest density solid 2.which element has the highest? can you help?

    asked by chris
  147. chemistry

    A weather balloon if it starts with 10 liters of helium at 0km elevation and a temperature of 20 degrees. it is released and rises up through the atmosphere to an elevation of 12km where the temperature is -60degrees. calculate the volume of the helium at

    asked by Cynthia
  148. to ms.sue

    i went on the website, but the part about sand, i really don't understand.

    asked by Celest
  149. ALGEBRA

    Find the requested probabilities. $$ P(\overline{A}) \ \text{if} \ P(A) = {\color{red}0.9} $$ P(A) =

    asked by Urgen please help
  150. Art

    I urgently need you, Writeacher, to check these sentences. Thank you very much in advance. 1)He uses a particular salt, adds it to other components and brings it to the boil. Once the boiling (better ebullution??) has subsided (ceased?), he drinks the

    asked by Franz
  151. physics

    A car that is traveling at 28.16 m/s is going about

    asked by Anonymous
  152. algebra

    The number N of aluminum cans used each year varies directly as the number of people P using the cans. If 54 people use 19,926 cans in one year, how many cans ae used in a city which has a population of 1,485,000

    asked by rr
  153. ALGEBRA

    Find the range and the variance (correct to one decimal place). 77, 92, 93, 93, 98 (b) Find the variance = I had the range correct except the variance.

    asked by Urgen please help
  154. math

    A cylinder labeled X has a height of 10 inches and a radius of 15 inches. Another cylinder labeled Y has a height of 40 inches and a radius of 60 inches. The volume of cylinder Y is _______ times the volume of cylinder X.

    asked by Anonymous
  155. Algebra 1

    find the number one-third of the way from 1/6 to 4/5

    asked by Michelle
  156. health

    You are the director of Tri-County Home Health Agency and due to financial reasons your are to implement lay-off. How will you decide whcih jobs will have to be eliminated. Who will be in on the decision making process, and how will you notify employees ab

    asked by Diane
  157. English

    do this poem be same like thomas one? knight be betrayed by this girl he meet?? Oh what can ail thee, knight-at-arms, Alone and palely loitering? The sedge has withered from the lake, And no birds sing. Oh what can ail thee, knight-at-arms, So haggard and

    asked by Mohammad