Jaz

Most popular questions and responses by Jaz

  1. Statistic

    A statistic instructor randomly selected four bags of oranges, each bag labeled 10 pounds, and weighed the bags.They weighed 10.4, 10.9 , 10.8, and 9.9 pounds.assume that the distribution of the weights is normal. Find a 95% confidence interval for the

    asked on December 6, 2013

  2. CHEMISTRY

    Find the number of moles. a. 3.01*10^23 molecules H2O. b.1.000*10^23 atoms C. c. 5.5610 *10^22 ions Na^+.

    asked on March 16, 2009

  3. chemistry

    DNA is approximately 2.5nm in length. IF an average man is 5ft 10 in. tall, how many DNA molecules could be stacked to extend from the ground to the top of the head of an average man.

    asked on January 27, 2015

  4. chemistry

    Find the mass in grams. a. 4.30 x 10^16 atoms He, 4.00 g/mol b. 5.710 x 10^23 molecules CH4, 16.05 g/mol c. 3.012 x 10^24 ions Ca^2+, 40.08 g/mol

    asked on March 16, 2009

  5. chemistry help

    Determine the number of moles of each specified atom or ion in the given samples of the following compunds.( Hint: the formula tells you how many atoms or ions are in each molecule of formula unit.) a. O atom in 3.161x10^21 molecules of CO2 b. C atom in

    asked on March 8, 2009

  7. math algebra

    Fill in the missing numbers to complete the linear equation that gives the rule for this table. x y 2 22 3 33 4 44 5 55 y = x + Submit

    asked on June 15, 2017

  8. physics

    The force shown in the figure below is the net eastward force acting on a ball. The force starts rising at t=0.020 s, falls back to zero at t=0.062 s, and reaches a maximum force of 55 N at the peak. Determine with an error no bigger than 25% (high or low)

    asked on October 13, 2010

  9. science

    When I push on my refrigerator, there is a force acting on it that wasn't there before. That means it should be experiencing an unbalanced force and begin to move. Why doesn't it?

    asked on May 10, 2016

  10. Math

    Your parents took your family to dinner. Your parents wanted to give the waiter a 15% tip. If the total amount of the dinner was $42.00. What should be paid to the waiter as a tip.

    asked on March 6, 2013

  11. HHS

    What is the molality of a solution in which 15g of I2 is dissolved in 500g of alcohol?

    asked on April 4, 2011

  12. chemistry

    The densities of the liquid and solid states of a substance are often similar. Explain.

    asked on April 2, 2009

  13. chemistry

    A certain amount of chlorine gas was placed inside a cylinder with a movable piston at one end. The initial volume was 3.00 and the initial pressure of chlorine was 1.75 . The piston was pushed down to change the volume to 1.00 . Calculate the final

    asked on March 10, 2009

  14. chemistry

    Mole and Particle practice How many representative particles (atoms, ions, molecules, etc) are present in each of the following? 1) 4.3 mol of tungsten 2) 2.45 * 10-6 mol nickel (II) selenide (NiSe) 3) 0.923 mol of selenium tetrabromide (SeBr4) How many

    asked on March 10, 2009

  15. Geometry

    16 x squared + 25 y squared = 400

    asked on April 12, 2019

  16. ap stats

    Continuous Random Variable, I Let X be a random number between 0 and 1 produced by the idealized uniform random number generator described. Find the following probabilities: a.P(0less than or equal to X less than or equal to 0.4) b.P(0.4 less than or equal

    asked on March 18, 2009

  18. math

    a student is painting one wall of a room. a square window is located in the middle of the wall to be painted. the window measures 3 feet on one side. the area of the wall, not including the window, is 80ft squared. find the height of the wall to the

    asked on January 10, 2012

  19. math

    can u please help me with this math problem. i don't get how to do this question. Mrs. Mabie has a rectangle swimming pool that measures 25 feet by 14 feet. She wants to have a cement walkway installed around the perimeter of the pool. The combined area of

    asked on January 8, 2012

  20. Physics

    1. The mass of Kerry and the sledge together is 40 kg. Sam pushes with a force of 50 N for 4 s. a. What is the value of the quantity: (force x time) during which the force acts? 50 x 4 = 200 b. So what is the increased momentum of Kerry and the sledge? c.

    asked on October 17, 2012

  21. math

    Grandmother is 3 years younger than grandfather. Nine years ago, the sum of their ages was 105. How old are they?

    asked on November 2, 2017

  22. stats

    A survey was done recently by the Royal Bank with Ipsos Reid (reported in Globe and Mail Aug 16 2010) about financial issues that university students face. (Data used here is based on that survey, but randomized to be still within the margin of error of

    asked on October 2, 2010

  23. stats

    Violence in School, I An SRS of 400 American adults is asked “What do you think is the most serious problem facing our schools?” Suppose that in fact 40% of all adults would answer “violence” if asked this question. The proportion p of the sample

    asked on March 13, 2009

  24. algebra II

    permutation A “make-your-own-adventure” story lets you choose 6 starting points, gives 4 plot choices, and then has 5 possible endings. How many different adventures are there?

    asked on March 12, 2009

  25. chemistry

    Why are water molecules polar?

    asked on April 19, 2009

  26. math help

    A survey was done recently by the Royal Bank with Ipsos Reid (reported in Globe and Mail Aug 16 2010) about financial issues that university students face. (Data used here is based on that survey, but randomized to be still within the margin of error of

    asked on October 2, 2010

  27. pre calc

    The terminal side of an angle in standard position goes through the poin (-2,5). Find the values of the 6 trig function sin cos tan csc sec cot

    asked on April 2, 2009

  29. stats need help

    Violence in School, I An SRS of 400 American adults is asked “What do you think is the most serious problem facing our schools?” Suppose that in fact 40% of all adults would answer “violence” if asked this question. The proportion p of the sample

    asked on March 17, 2009

  30. chemistry

    Classify the reactions (combustion, synthesis, decomposition, replacement, or double replacement) CaO9(s)+H20(l)¨ Ca(OH2(ag) Ca(ClO3)2(s)¨CaCl2(s)+O2(g)

    asked on February 17, 2009

  31. math

    Julian is interested in building a new house. Three architects have given him plans. The first plan is for a house that will be 2,250 square feet. The total cost of the house will be $281,250. The second plan is for a house that will be 2,400 square feet.

    asked on October 29, 2010

  32. communication

    within the workplace.......let's try to apply the health belief model to that environment......when you have a mix of cultures and socioeconomic status and perspectives.......how difficult is it to get folks to 'move' together? How much should each person

    asked on January 30, 2010

  33. Independent and dependent events

    A six-sided-cube is labeled with the numbers 1, 2, 2, 3, 3, and 3. Four sides are colored red, one side is white, and one side is yellow. Find each probability. Tossing 2, then 2. Tossing red, then white, then yellow.

    asked on March 23, 2009

  34. algebra

    Permutation For the lunch special, you can choose an entrée, a drink, and one side dish. How many meal choices are there

    asked on March 13, 2009

  35. Chemistry

    When I push on my refrigerator, there is a force acting on it that wasn't there before. That means it should be experiencing an unbalanced force and begin to move. Why doesn't it?

    asked on May 10, 2016

  36. spanish 2

    how do you say start, beginning, end, stay in spanish

    asked on December 3, 2009

  37. comtemporary business Communication

    What are the main formatting differences between the memo and the academic paper? In what ways do audience, purpose, tone, and structure affect the formatting of the memo and the paper?

    asked on May 9, 2008

  38. english

    What are other ways in which you can make use of the wealth of Web-based information and still guard against plagiarism?

    asked on April 28, 2008

  40. physics

    A ferryboat traveling at a speed of 30 km/h attempts to cross a river with a current of 5 km/h. What is the boat's speed relative to the shore?

    asked on October 7, 2013

  41. American History

    Which of the following was John Rolfe's chief contribution to Virginia's economy A. His alliance with the Powhatan through his marriage to Pocahontas B. His invention of a better way to grow short-staple cotton C. His innovations in cultivating tobacco D.

    asked on February 23, 2012

  42. alg2/trig

    Which expression is defined for all real numbers? a) x + 3/x^2 b) 5/(x + 2)^2 c)4/(x − 2)^2 d)7/x^2 + 3

    asked on October 2, 2011

  43. English

    what news of julilet does Romeos servant Balthasar bring?

    asked on November 16, 2010

  44. Algebra

    Explain why x^2 +5x + 8 is prime(not factorable) How do you know? Give 2 examples of a prime polynomial(can't be both binomials) Give 2 examples of polynomials that are not prime(they can't be both binomials),factor them,explain what you did to factor

    asked on July 6, 2010

  45. communication

    When someone weighs their response to a health issue that they are confronting, knowing that they need to go to one healthcare facility or another for treatment, or, one physician or another for care...........what impact does reputation and word of mouth

    asked on January 30, 2010

  46. Algebra

    How do you factor x-5x^3-6x^3? Thanks!

    asked on November 23, 2009

  47. SENIOR PROJECT IDEAS

    What are some good topics for a senior project to do?

    asked on September 10, 2009

  48. algebra

    solve. 3x/2 + 8-4x/7=3

    asked on April 30, 2009

  49. chemistry

    Determining a Molecular Formula from an Empirical Formula 1. A compund has an experimental molar mass of 78g/mol. Its empirical formula is CH. What is its molecular formula?

    asked on March 24, 2009

  51. chemistry

    Dose the law of conservation work when doing an expirement with vinegar and baking soda.

    asked on February 19, 2009

  52. history

    Who were the first colonists in America?

    asked on February 18, 2009

  53. comtemporary business Communication

    suggest 2 tips for academic document not mentioned in miccrosoft word.

    asked on May 8, 2008

  54. Math

    Suppose you work for the quality control department at Hewlett Packard. You know that ink jet cartridges are sometimes defective. The current defective rate is 8 cartridges per package of 100 (i.e. 0.08) What is the probability of sampling 12 cartridges

    asked on June 4, 2018

  55. history (presidents)

    Which of the following lists of presidents is in correct chronological order? A. Roosevelt/Taft/Arthur/Wilson/Grant B. McKinley/Roosevelt/Johnson/Buchanan/Cleveland C. Jefferson/Monroe/Taylor/Harrison/Harding D. Coolidge/Hoover/Adams/Reagan/Lincoln E.

    asked on March 3, 2014

  56. geometry

    Find the length of a side of a square whose perimeter and area have the same value. help? perimeter of a square is P=4s & the area of a square is A=s^2

    asked on September 25, 2011

  57. Environmental Science

    microorganisms can't break down plastics because... I'm stuck between a) plastics are made from oil d) plastics don't occur in nature. Both of them are true, but I'm not sure which is the most true.

    asked on February 20, 2010

  58. summoner's tale

    what is funny about the summoner's tale

    asked on December 4, 2009

  59. Dividing Rational Expressions

    x^3-8/x^2-4 divided by (x^2+2x+4)/(x^3+8). This becomes ((x-2)(x^2+2x+4)/(x+2)(x-2) times ((x+2)(x^2-2x+4))/(x^2+2x+4). I understand that (x-2)(x^2+2x+4)=(x^3-8) when I distribute it, however, if I didn't have the help of my book, I'd have no clue how to

    asked on November 21, 2009

  60. algebra check these answere please

    Four quilters are preparing patches for a quilt. When finished, the quilt will contain 200 patches. The quilters’ contributions thus far are in the table below. Name Number if patches Lia 65 Brian 17 Elle 88 len 6 Find the probability that a randomly

    asked on March 23, 2009

  62. stats need help

    Violence in School, I An SRS of 400 American adults is asked “What do you think is the most serious problem facing our schools?” Suppose that in fact 40% of all adults would answer “violence” if asked this question. The proportion p of the sample

    asked on March 14, 2009

  63. business commuication

    What strategies can you use to incorporate effective visual elements into business presentations?

    asked on May 14, 2008

  64. Math Statistics

    Suppose you work for the quality control department at Hewlett Packard. You know that ink jet cartridges are sometimes defective. The current defective rate is 8 cartridges per package of 100 (i.e. 0.08) What is the probability of sampling 12 cartridges

    asked on June 4, 2018

  65. thermodynamic

    If the energy used to heat up a block of 2kg of copper is 115.8 kJ, what is the temperature it was heated to if the starting temperature was 100oC and the specific heat capacity is 386 J/kgK. please help. thanks

    asked on April 29, 2017

  66. Math

    The price of an electric fan increased by 25% to $48.75. Find the original price of the fan.

    asked on March 6, 2013

  67. english

    How important of a factor does money play in the lives and happiness of individuals? is this sentence grammatically correct?

    asked on January 16, 2013

  68. spanish 2

    How do you say ways to get around in spanish and directions around the city

    asked on December 4, 2009

  69. Factoring

    Can you show me how to factor x-5x^2-6x^3, and why each step is done? I'm not sure how to factor something where the x is in front instead of the highest power, and something with both a ^2 and ^3 variable. Thanks!

    asked on November 23, 2009

  70. Algebra

    Why does 5x/6x^2 become 5/6x? How did x-x^2 become an x on the bottom? Thanks!

    asked on November 22, 2009

  71. social studies

    What does Ecuador plan to do on Infectious Diseases and what the United Nations plan to do>?

    asked on April 22, 2009

  73. english 3

    How can I compare Lord of the Flies to another work like a book or a movie? What should I inclued in the comparison in the powerpoint to make it creativity?

    asked on April 9, 2009

  74. algebra II

    Adding Rational Expressions 1. 4m-2/3m+2 + 6m -4/ 3m+2=

    asked on February 16, 2009

  75. comtemporary business Communication

    Between APA and MLA which is the most important Thank You

    asked on May 9, 2008

  76. algebra

    How come half the questions posted in here don't even get answered?

    asked on May 10, 2016

  77. math

    solve the absolute value problem : 3x+|4x+5|=10

    asked on September 18, 2011

  78. making a travel guide

    i need help creating a powerpoint of a travel guide about flordia

    asked on December 3, 2009

  79. Algebra

    How do you factor an x^3 as in x^3+5x^2+6? Is there a general rule you can follow?

    asked on November 22, 2009

  80. Algebra

    A few questions on simplifying rational expressions... 1). 15x^2/10x this simplifies to 3x^2/2 according to my book. But I would think it should be 3/2x since x^2-x=x. Why not? 2). Simplify 3xy/xy+x. How come the (xy)'s don't cancel so you are left with

    asked on November 22, 2009

  81. social studies need more info

    What does Ecuador plan to do about infectious diseases and what can the united nation do about it>

    asked on April 22, 2009

  82. history

    What other poets wrote about the Middle Passage besides Robert Hayden?

    asked on March 18, 2009

  84. algebra

    solve and simplify 9^4/3 / 9^2/3

    asked on February 23, 2009

  85. algebra II

    Adding Rational Expressions m/p^2 + 3/p^3 - 4

    asked on February 16, 2009

  86. spanish

    what are some word that describe people in spanish

    asked on February 9, 2009

  87. algebra need help

    how do you put the following in y=mx+b 1. 19y-8=6x 2. 15x-12x=21

    asked on February 9, 2009

  88. business communication

    Suggest options for presenting information audience. Which method do you think is the most effective?

    asked on May 14, 2008

  89. maths

    in the fig ab = ad and ac=ae. prove that bc=de

    asked on August 31, 2015

  90. Math

    Please help solve and explain it, thank you. 1. Juan, Steve and Gabriella bought a total of 30 markers at an art store. Juan bought 3 more markers than Steve. Gabriella bought 7 times as many markers as Steve. How many markers did each buy? 2.

    asked on September 25, 2012

  91. anatomy'

    disease is an unhealthy state of a. organ system b.the entire body c. an organ d.all are true

    asked on September 19, 2011

  92. pre calc

    list the positivve integers between -3 and 7.

    asked on September 8, 2009

  93. social studies

    I need facts about infectious diseases in Ecuador

    asked on April 23, 2009

  95. social studies

    What does Ecuador plan to do on Infectious Diseases?

    asked on April 22, 2009

  96. algebra need help

    Determine whether the geometric series converges or diverges. 27 + 18 + 12 + 8 + . . .

    asked on April 14, 2009

  97. algebra II

    Determine whether the geometric series converges or diverges. 27 + 18 + 12 + 8 + . . .

    asked on April 14, 2009

  98. pre calc

    Find the complement and supplement of each angle. 1. 40 degrees 2. 89 degrees

    asked on March 31, 2009

  99. algebra help asap

    Simplify: 5square root 9^10

    asked on February 24, 2009

  100. history

    When did colonists first come to America?

    asked on February 18, 2009

  101. Math

    What do we call the nunmbers that cannot be arranged ito 2-row arrays

    asked on September 6, 2008

  102. COLLEGE LETTERS

    why would you want a teacher to write you a college recommendation? WHAT ARE REASON WHY THEY WOULD BE A GOOD RESOURCE

    asked on September 10, 2009

  103. history

    Who were the first colonists in America?

    asked on February 18, 2009

  104. spanish

    How do you say your uncle like to read and he is atletic?

    asked on February 10, 2009

  106. comtemporary business Communication

    how do you balance time between courses

    asked on May 31, 2008

  107. comtemporary business Communication

    How does an college degree relates to goals

    asked on May 31, 2008

  108. comtemporary business Communication

    What does the MLA do and what does it mean?

    asked on May 9, 2008

  109. comtemporary business Communication

    what does APA on microsoftword Word do ?

    asked on May 9, 2008

  110. business law

    what steps can i take to ensure a propose in why a company should except my proposal

    asked on April 24, 2008