1. Math/Statistics

    The property restoration company PuroServ is considering switching to new dehumidifiers. Their market research, considering the cost of the new machines and their efficiency, tells them that the switch would give them an 83 percent chance of making a

    asked by Rodney on May 1, 2011
  2. Flotation machine can meet the performance require

    Flotation Machine can be used to separate nonferrous metal, ferrous metal, heavy metal, nonmetallic mine, chemical material and recycling minerals. Each chute can inhale gas, sink magma, separate. No assiting equipments are required, and Flotation Machine

    asked by jiandan on July 22, 2012
  3. statistics

    Tax Preparers Inc. works 250 days per year. The company uses adding machine tape at a rate of eight rolls per day. Usage is believed to be normally distributed with a standard deviation of three rolls during lead time. The cost of ordering the tape is $10

    asked by Brenda on December 1, 2011
  4. language arts

    abc order for geology geography geologist graphite autograph photograph biopsy biology biosphere transact enact actor react import transport portable export When you get them in ABC (alphabetical) order, please re-post and we'll let you know how you did. A

    asked by helen on March 14, 2007
  5. calculus

    Bacterial Population: A bacterial colony is estimated to have a population of P(t)=(24t+10)/(t^2+1) Million t hours after the introduction or a toxin. At what rate is the population changing in 1 hour after the toxin is introduced (t=1)? Is the population

    asked by ariana` on August 4, 2009
  6. aadvanced functions HELP!

    the population of a town is decreasing at a rate of 1.8% per year. The current population of the own in 12000. a)write and equation that models the population of the town b)how long will it take for the population to decline to one quarter of its current

    asked by james on December 10, 2008
  7. Biology

    J.J. Thomson's experiments supported the existence of a particle that deflected away from a negative charge and toward a positive charge. Ernest Rutherford found that when positive particles were fired at gold foil, some of the particles deflected rather

    asked by Rafa on June 24, 2015
  8. Chemistry

    In the condensed structure CH3CH2CHCH double bonded to CHCH(CH3)2 ! CH3 What does it mean when the CH3 is in () followed by the 2?

    asked by Hannah on September 13, 2012
  9. chemistry

    what does the structure of 2-ethyl- 3-methyl-4-ethyl -heptane look like? IS a correct name for it 5-ethyl- , 3,4- dimethyl -octane?

    asked by Anonymous on April 23, 2018
  10. Biology

    Functions Store information Copy information Transmit information What is the structure of each molecule

    asked by Candy on March 7, 2013
  11. geometry and combinatorics

    An equilateral triangle with side length 33 is divided into 33^2 smaller unit equilateral triangles each with side 1, forming a triangular lattice. We color each segment of length 1 either Red, Blue or Green, subject to the condition that each small unit

    asked by sanji on April 30, 2013
  12. Finance

    Evans Technology has the following capital structure. Debt ............................................ 40% Common equity .......................... 60 The aftertax cost of debt is 6 percent, and the cost of common equity (in the form of retained earnings)

    asked by Albert on November 16, 2015
  13. calculus

    This is my last question, when I usually get problems like this the volume would be there and I would be able to solve it but this question is very confusing. A spherical iron ball is coated with a layer of ice of uniform thickness. If the ice melts at the

    asked by Barbara on January 3, 2009
  14. economics

    I have a couple of questions, thanks so much. If a country were to increase the value of their currency, how could that improve their economy? How does the value of currency (the increasing or decreasing of) affect the debt,deficit, CNI, GDP, & GDP per

    asked by Tony on February 1, 2008
  15. chemistry

    Nitrogen monoxide reacts with hydrogen gas to form nitrogen gas and water (vapor). Write a balanced equation for this reaction. the reaction is experimentally found to be (approximately) first-order in H2 and second-order in NO. Write down the form of the

    asked by Kenzie on April 11, 2012
  16. Chemistry

    Nitrogen Monoxide reacts with hydrogen gas to form nitrogen gas and water (vapor). (i). write a balanced equation for this reaction. (ii). The reaction is experimentally found to be (approx) first-order in H2 and second order in in NO. Write the form if

    asked by Crystal on April 14, 2012
  17. algebra

    A homeowner wishes to insulate her attic with fiberglass insulation to conserve energy. The insulation comes in 40-cm wide rolls that are cut to fit between the rafters in the attic. If the roof is 6 m from peak to eave and the attic space is 2 m high at

    asked by KB on July 4, 2007
  18. Physics @bobpursley

    A 65 kg student consumes 2500 Cal each day and stays at the same weight. For three days in a row, while visiting his parents, she eats 3500 Cal and, wanting to keep from gaining weight decides to "work off" the excess by jumping up and down. With each

    asked by Live on January 11, 2019
  19. Math

    Two parallel resistors have resistances R1 and R2. If the total resistance is R, then 1/R = 1/R1 + 1/R2. R1 is increasing at 0.04 ohm/sec,and R2 is decreasing at 0.03 ohm/sec. How fast is the total resistance changing at the moment that R1 is 3 ohms and R2

    asked by Anonymous on March 7, 2015
  20. physics

    A child is sitting on a stationary skateboard with a pile of rocks which she throws in one direction in order to make the skateboard travel in the opposite direction. If the rocks each have a mass of 0.95 kg and she can throw them with a speed of 19 m/s

    asked by Amy on November 13, 2016
  21. chem 12

    2H2S(g)---2H2(g) + S2 delta H=220KJ k eq is 0.40 a 10.0L vessel containing 2.0 mol of H2S, 2.2 mol of H2, and 2.5 mol of S2 Calculate a trail k eq value to see whether the reaction is at equilibrium. trail k eq =(h2)^2(S2)/(H2S)^2 = (0.22)^2(0.25)/(0.2)^2

    asked by George on March 9, 2016
  22. chem 12

    2H2S(g)---2H2(g) + S2 delta H=220KJ k eq is 0.40 a 10.0L vessel containing 2.0 mol of H2S, 2.2 mol of H2, and 2.5 mol of S2 Calculate a trail k eq value to see whether the reaction is at equilibrium. trail k eq =(h2)^2(S2)/(H2S)^2 = (0.22)^2(0.25)/(0.2)^2

    asked by George on March 12, 2016
  23. chemistry -repost

    Still can't figure this one out-- sorry for reposting, this is the last post, if someone has time to review this question and see if they can figure out how the textbook got 1.0x10^-7 seconds Iodine combines to form I2 in liquid propane solvent with a

    asked by Nancy on August 6, 2014
  24. half-life

    1. The half-life of a first-order reaction is 9.89 minutes. How many minutes will have elapsed after 27 half-lives? My answer is 267.03. 2. The half-life of a second-order reaction is 2.508 days. How many days will have elapsed after 8 half-lives? My

    asked by Issac on February 7, 2007
  25. Technology

    Which of the following information is most important to include in a timeline? a. title, subtitle, images, captions, arrows b. dates in order, titles, arrows, lines c. title, description of timeline, dates in order, events•• d. time periods, lines,

    asked by Trover on January 26, 2016
  26. English

    Hello. Please help me again. 1)I know it's possible to say "They entertained us to dinner", but is it possible to say "they entertained us to pizza" or "we were entertained to a cake"? 2)I asked a similar question, but if I change the structure, will I

    asked by Ilma on July 6, 2011
  27. american government/ economics

    A constituion: is a unitary form of government., sets out the principles and structure of a government., is a part of federal system of government ., is devolped only for democratic governments. i think its b.if not correct please, thank you

    asked by Anonymous, on September 20, 2008
  28. PNU

    An element has a body-centered cubic(bcc) structure with a cell edge of 288pm the density of the element is 7.2g/cm3. How many atoms are present in 208g of element

    asked by abeer on February 17, 2015
  29. Program planning

    Developmentally appropriate curriculum A. teaches children about development. B. provides easy activities. C. allows children to choose the structure for their own experiences. D. requires children to learn academic content.

    asked by Leslie on November 4, 2015
  30. chemistry

    To dissolve an ionic solid in water, you must first disrupt the ionic bonds that are holding the ionic lattice together. This is an endothermic process, yet many ionic solids have an exothermic heat of solution. (Heat is released when the ionic solid is

    asked by Cortney on March 17, 2015
  31. English

    I left out the following sentences. Thank you. 1) Some schools valued their pupils' athletic achievements more than their academic ones. Team games became essential for inculcating discipline, obedience and sense of duty in the pupils. 2) Team games such

    asked by Henry2 on June 24, 2011
  32. chemistry

    Consider the following chemical equilibrium: SO3(g) --> SO2(g) + 1/2 O2(g) and Delta H = 98.9J a. Predict weather the forward or reverse reaction will occur when the equilibrium is disturbed by: i. adding oxygen gas ii. compressing the system at constant

    asked by linda on March 6, 2008
  33. science

    imagine you are in a spaceship flying from the earth - describe what you see from the space and how you feel as it moves out of the gravitation pull of earth?

    asked by sarthak on August 25, 2010
  34. 5th grade math

    suppose you made your garden 5ft wide... what would its length be? what would its area be? what would be the area of the left over space in the yard.

    asked by bosscat on August 28, 2013
  35. math pre algebra

    a kennel owner is buying a new building he want the space for each dog run to be at least 96 square ft the area reserved for the dog ru.s is 30 ft by 60 ft

    asked by eddie on January 31, 2012
  36. Calculus

    The position vector r(t) = describes the path of a particle in space. What is the particle's speed? A. 3√7 B. √93 C. √85 D. 149 E. 21

    asked by Anonymous on April 12, 2018
  37. Physics

    What is the frequency of the electromagnetic radiation from outer space that reaches the earth with a wavelength of 1 x 105 m, and a velocity of 1 x 105 m/s?

    asked by Hannah on February 9, 2012
  38. math

    A pair of dice is rolled.What is the probability that the sum of the pips is either an even number on a multiple of 3? total number of space is 36.

    asked by Eric on February 4, 2016
  39. physics (Mathmate)

    The space shuttle is in a 250 mile high orbit. What are the shuttle's orbital period, in minutes and its speed?

    asked by MD on June 16, 2010
  40. physics

    20.00 cm of space is available. How long a piece of brass at 20°C can be put there and still fit at 200°C? Brass has a linear expansion coefficient of 19 × 10^-6/C°. 1-19.93 cm 2-19.69 cm 3-19.50 cm 4-19.09 cm

    asked by shirly on February 24, 2014
  41. Math #rd grade

    Bryan has 3 nickels, 3 dimes, and 2 quarters. What fraction of the coins is either a dime or a quarter? There is a space for only 1 fraction answer.

    asked by Grace on January 14, 2014
  42. math

    Please can you me What a linear inequality describes the graph of a dashed line passing through (0,3) and (6,0) with the space beneath the graph shaded?

    asked by sateko on April 18, 2011
  43. science

    imagine you are in a spaceship flying from the earth - describe what you see from the space and how you feel as it moves out of the gravitation pull of earth?

    asked by sarthak on August 25, 2010
  44. math calculus

    if i,j,k are the standard unit basic vectors, in 3 space, determine the value of k dot(j-3k)+(i-4k) dot (i-4k)-8 |i cross -k| (Simplify without using components)

    asked by Tina on November 24, 2014
  45. statistics

    A lottery uses 4 urns containing chips 0 to 9. One chip is selected at random from each urn. How many sample points are in the sample space?

    asked by betty on January 18, 2014
  46. physics

    An electron is traveling through a region of space in which the electric field is along the +x direction and has a magnitude of 1560 N/C. What is the acceleration of the electron?

    asked by Anonymous on September 12, 2010
  47. Physics

    Two things infinite sheets have uniform surface density of charge+5 and _5 .electric field in space between two sheets is

    asked by Sunil on July 2, 2017
  48. physics

    Two charges q = 3.0ì C are fixed in space a distance d = 4.5 cm apart. With V = 0 at infinity, What is the potential energy U of the three-charge configuration when the third charge is in place?

    asked by Andy on January 23, 2010
  49. AP Biology

    With regards to photosynthesis, if the following problems occurred, how would photosynthesis be affected? 1.) a.) NADP+ is not present in the thylakoid space b.) CO2 is not available to the plant Thanks

    asked by Ryan on March 23, 2008
  50. statistics

    what is the sample space for this experiment: select two cards from a deck of 52 cards and observe the color of each card drawn.

    asked by Mark on January 2, 2011
  51. math

    A 6-sided die is rolled. The sides contain the numbers 1, 2, 3, 4, 5, 6. List the sample space of rolling one die. 9) _______ A) {6} B) {36} C) {1, 2, 3, 4, 5, 6} D) None of these

    asked by jen on December 6, 2009
  52. physical science

    What physical law states: When an object nears a massive celestial object in space, it is attracted to its gravity

    asked by anonymous on December 31, 2010
  53. Geography

    13. Distance - decay and Time-Space Compression represent the same thing within diffusion. True False True?

    asked by Anonymous on January 9, 2016
  54. business 115

    List your references according to APA guidelines in the space below. You are required to use at least one outside source to support your viewpoint, and this source can be the textbook.

    asked by Clyde on July 12, 2010
  55. Social Studies

    What are the nine types of landforms? please help! This site is excellent. http://gpc.edu/~pgore/Earth&Space/landforms.html

    asked by Roberta on November 30, 2006
  56. CALCULLUS

    Question 2: If is the position of a particle in space at time .Find the angle between the velocity and acceleration vectors at time

    asked by NISARGILL on January 27, 2013
  57. Statistics

    A lottery uses 4 urns containing chips 0 to 9. One chip is selected at random from each urn. How many sample points are in the sample space?

    asked by Tammy on May 22, 2012
  58. math

    a room is 30 ft long, 25 ft wide and 14 ft high. if 42 balloons are inside the room, how many cubic feet of space does this allow for each balloon?

    asked by glenn on July 21, 2017
  59. hardware

    What percentage of the address space of IP4 do the network classes of A, B, and C represent? ( Hint: Think of the classes in terms of power of 2.)

    asked by Tone on July 29, 2011
  60. Physics

    the space shuttle is in a 250 mile high orbit. What are the shuttle's orbital period, in minutes, and it speed?

    asked by Sarah on June 16, 2010
  61. Physics

    20.00 cm of space is available. How long a piece of brass at 20°C can be put there and still fit at 200°C? Brass has a linear expansion coefficient of 19 × 10^-6/C°. 19.93 cm 19.69 cm 19.50 cm 19.09 cm

    asked by tira on May 23, 2014
  62. physics

    what is physics? i know that its subject but what is definition of physics? The study of matter, energy, space, and time, and the interactions thereof.

    asked by komal on July 7, 2007
  63. BUISNESS AND TECHNOLOGY

    4. List your references according to APA guidelines in the space below. You are required to use at least one outside source to support your viewpoint and this source can be the textbook.

    asked by ALEX on January 8, 2010
  64. Spanish

    What is UOLSRRSEDELO unscrambled? The word is a spanish word and is written as: _ _ _(space) _ _ _ _ _ _ _ _ _ Thanks!

    asked by Jacob on March 25, 2015
  65. geography

    This reflects some heat back into space and traps some heat near the earth.

    asked by Ella on September 1, 2014
  66. science

    does everything you see fit the definition of matter? can you see all kinds of matter? how can helium take up space?

    asked by jeremias on April 8, 2010
  67. History

    What was so significant about the space race? and why is it still significant and important currently today as of 2016?

    asked by Rina on April 13, 2016
  68. help please

    if you are printing an essay on the comuter....can the essay be double line space?

    asked by sonia on April 15, 2011
  69. Math

    1/3divided by 4= 12 I made a model that has 4 sections and each space has 3 1third sections

    asked by Beverly on March 5, 2015
  70. physics

    how do scientist know that the chemical elements here on earth are the same as on the planets in space and not some different elements

    asked by Kara on February 8, 2012
  71. m

    If events A and B are from the same sample space, and if and , can events A and B be mutually exclusive? Explain.

    asked by kirk on August 14, 2010
  72. math

    You have 6 black socks and 4 white socks. what is the sample space? I think it should be 45 possible combinations.

    asked by a on September 15, 2016
  73. Geometry- thanks reiny

    what's a composite space in two boxes I don't understand because there's two boxes that are together and they want the volume

    asked by Elizebeth taylor on October 22, 2014
  74. Geometry

    Enlarge 6 in x 10 in picture to 3 feet x 4 feet. What is the scale factor and how much of the space will be used?

    asked by Oakley on April 1, 2017
  75. math

    can an inner product space v have a t invariant subspace U but also have an orthogonal complement that is NOT t-invariant???

    asked by mk on March 3, 2007
  76. Math

    The population of a city has been decreasing exponentially since 1990. In 1990, the population was 1,000,000. In 2010, the population was 560,000. If t represents time in years since 1990, which of the following equations best models the decay of the

    asked by Annie on January 2, 2017
  77. physics

    What kind of motion does a constant, non zero torgue produce on an object mounted on an axle: choices constant rotational speed, constant rotational acceleration, increasing rotational acceleration or decreasing rotational acceleration.

    asked by mike on June 20, 2010
  78. math

    4 PART Your weight on different planets is affected by gravity. An object that weighs 150 pounds on Earth weighs only 56.55 pounds on Mars. The same object weighs only 24.9 pounds on the Moon. A)What percent of an object's Earth weight is its weight on

    asked by kymy on January 14, 2015
  79. Biology II

    Discuss the biological importance of each of the following organiz compounds in relation to cellular structure and function in plants and animals A) Carbohydrates B) Proteins C) Lipids D) nucleic acid Like my problem is I don't really get what it is asking

    asked by Soojung on September 16, 2007
  80. chm

    The Lewis dot structure of ammonia, NH3, reveals that it has one lone pair of electrons and three bonds (each to a hydrogen) around the central nitrogen atom. According to VSEPR theory, what molecular shape will it have? i thought it was tetrahedral but

    asked by luck on February 18, 2013
  81. Math

    Rank the following from greatest to least. 297.086, 297.8, 297.062 Is this correct 297.062, 297.086, 297.8

    asked by Gio on December 17, 2012
  82. Chemistry

    A woman expends 96 kJ of energy in walking a kilometer. The energy is supplied by the metabolic breakdown of food intake and has a 35 % efficiency. If the woman drives a car over the same distance, how much energy is used if the car gets 8.7 km per liter

    asked by James on March 27, 2015
  83. Physical Science

    In a pulley sytem with 100% effieciency with ten support cables. The input side reels 100 meters of cable. How far dis the output move? What is the value of the output force? In identical conditions at 70% efficiency, the cable does not stretch. How much

    asked by Miguel on February 25, 2011
  84. Pump power

    I have a question in a tutorial, one of these that give the answers in brackets. However, I think the answer given may be wrong. Anyone check this please, if the given answer is correct, how is it worked out. Q A centrifugal pump is required to lift 400 kg

    asked by Jim (BIGEYE) on January 21, 2007
  85. physic

    In order to qualify for the finals in an race, a runner must achieve an average speed of 5.24 m/s for the entire mile race. If she runs at a constant speed of 4.63 m/s for the first half of the 1609 meter race, what constant speed must she maintain for the

    asked by tyler on August 21, 2012
  86. bio

    How are the various types of blood vessels different in structure? How do these structural differences relate to their functions? Consider the presence of valves, muscular control of constriction and dilation, and the presence or absence of multiple tissue

    asked by denise on July 28, 2008
  87. health information

    I need to research the root cause of disease classification structure and how it is linked to the outcomes of both the reimbursement and the epidemiological data. how do I research these topics? Or can you explain these instructions better? I asked the

    asked by Mary on May 6, 2013
  88. Short essay "A Thankless Experience"

    Describe the sentence structure Stephen Lautens uses in "A Thankless Experience". Support your view withe examples from the essay. This is the story: http://www.lautens.com/columns/arch195.html Please help thank you

    asked by Steve on August 15, 2013
  89. Computer science(Information Retrieval Architectur

    A. Why are inverted files the most typical structure used for search systems? How does n-grams modify the inversion list approach? B. Discuss the similarities and differences between N-gram and PATRICIA TREE approach to indexing.

    asked by Nany on April 27, 2015
  90. math

    Find the least squares approximation of x over the interval [0,1] by a polynomial of the form a + b*e^x --------------------------------------------------------- The polynomial produces an output space with two linearly independent basis vectors: u1 = 1,

    asked by mathstudent on January 18, 2008
  91. Olympiad Math

    In this subtraction, the boxes contain the digits 3, 4, 6, and 9 in some order and the circles contain the digits 4, 5, 8, and 9 in some order. What four-digit number is represented by the boxes? NOTE: The boxes are the top number and the circles are the

    asked by Anonymous on June 24, 2011
  92. Physics

    Can someone actually ANSWER the question pleas and post numerical answers. Under less than ideal conditions, a student pushes a 6 kg cart holding 2 boxes of books up a ramp to a platform that is 1.8 m high in 42 sec. Each box contains 12 kg of books. The

    asked by Ron on April 8, 2010
  93. Chemistry

    Magnesium sulfate is often used it first aid hot-packs giving off heat when dissolved in water. When 2.00 g of MgSO4 dissolves in 15.0 mL of water (d= 1.00g/mL) at 25.0ºC, 1.51 kJ of heat is evolved. A) Write the balanced equation for this reaction. I

    asked by Chris on January 28, 2007
  94. business math

    You are the accountant for Suite Dreams, a retail furniture store. Recently, an order of sofas and chairs was received from the manufacturer with terms of 3/15, n/45. The order amounted to $230,000, and Suite Dreams can borrow money at 13% ordinary

    asked by keionna on June 19, 2013
  95. Business Math

    You are the accountant for Suite Dreams, a retail furniture store. Recently, an order of sofas and chairs was received from the manufacturer with terms of 3/15, n/45. The order amounted to $230,000, and Suite Dreams can borrow money at 13% ordinary

    asked by Tee on June 19, 2013
  96. MATLAB

    Consider the following approximation: f′(x) ≈ Af(x − 2h) + B f(x − h) + C f(x) + D f(x + h) + E f(x + 2h). 1) Determine the values of the constants A, B, C, D, and E so that the approximation is as accurate as possible. What is the order of the

    asked by Chris on October 15, 2017
  97. math

    You are the accountant for Suite Dreams, a retail furniture store. Recently, an order of sofas and chairs was received from the manufacturer with terms of 3/15, n/45. The order amounted to $230,000, and Suite Dreams can borrow money at 13% ordinary

    asked by brad on June 22, 2013
  98. math

    . You are the accountant for Suite Dreams, a retail furniture store. Recently, an order of sofas and chairs was received from the manufacturer with terms of 3/15, n/45. The order amounted to $230,000, and Suite Dreams can borrow money at 13% ordinary

    asked by keionna on June 17, 2013
  99. math

    You are the accountant for Suite Dreams, a retail furniture store. Recently, an order of sofas and chairs was received from the manufacturer with terms of 3/15, n/45. The order amounted to $230,000, and Suite Dreams can borrow money at 13% ordinary

    asked by keionna on June 15, 2013
  100. 7th grade math

    Crystal made a bag of trail mix peanuts, raisins, and chocloate chips in the ratio of peanuts:raisins:chocolate chips = 5:3:2. There are 150 raisins in the trail mix. How many peanuts and chocolate chips are in the trail mix?

    asked by Mike on April 12, 2016