Popular questions and responses by angie
  1. Statustics

    A survey found that women’s heights are normally distributed with mean 63.4 in and standard deviation 2.5 in. A branch of the military requires women’s heights to be between 58 in and 80 in. a. Find the percentage of women meeting the height

    asked on August 4, 2014
  2. Math

    Consider the set of integers greater than -2 and less than 6. A subset of this set is the positive factors of 5. What is the complement of this subset? a. {0,2,3,4} b. {-1,0,2,3,4} c. {-2,-1,0,2,3,4,6} d. {-2,-1,0,1,2,3,4,5,6} I think it's d, even though

    asked on May 25, 2009
  3. Chemistry

    The chemical equation for ionic reaction between Na2S and AgNO3??

    asked on April 1, 2015
  4. calculus

    Find two numbers whose product is 16 and whose sum of squares is minimum

    asked on December 21, 2016
  5. science

    An astronaut of mass 120 kg recedes from her spacecraft by activating a small propulsion unit attached to her back. The force generated by a spurt is 30 N. Show that her acceleration is 0.25 m/s2.

    asked on September 15, 2013
  6. Math Problem (please help)

    On the day of a child's birth, a deposit of $30,000 is made in a trust fund that pays 3% interest, compounded continuously. Determine the balance in this account on the child's 30th birthday. (Round your answer to two decimal places.)

    asked on September 9, 2014
  7. AP Chemistry

    Write the expression of for the base dissociation constant for hydrazine, N2H4, a weak base. Hydrazine reacts with water to form the N2H5+ ion.

    asked on January 11, 2010
  8. Chemistry

    Write a balanced overall reaction from these unbalanced half-reactions. Sn->Sn2+ Ag+->Ag Balanced overall equation I got Sn+2Ag+->Sn+2Ag, but its wrong.

    asked on November 20, 2016
  9. Chemistry - Help

    Please help..Write the equation for the equilibrium constant (K) of the reaction. 2K2CrO4 + 2HCl -->

    asked on April 12, 2015
  10. Chemistry

    How do you do the inverse of absolute temperature? My kelvin temperatures are: 298 308 318 328 338 348 358 368 378 Taking the natural log of both sides of both sides of the equation gives ln(k) = ln(A) – E/RT. Thus, a graph of the natural log of the

    asked on September 25, 2012
  11. Chemistry/Math

    I'm not sure how to approach this problem. A manometer uses kerosene, specific gravity 0.82 as the fluid. A reading of 5 inches on the manometer is equivalent to how many millimeters of mercury?

    asked on September 17, 2012
  12. Chemistry

    Consider the reaction between acetylene, C2H2, and oxygen in a welding torch: If 5.4 moles of acetylene react with sufficient oxygen, how many grams of CO2 will be formed?

    asked on April 6, 2015
  13. math

    A basketball player is 6 ft. 4 in. tall and a volleyball player who is 1.75 m. 17. How tall is the basketball player in meters? How tall is the volleyball player in feet? (round to one decimal place)

    asked on September 30, 2015
  14. American History

    Which statement below summarizes President Richard Nixon’s policy of Vietnamization. A. Train the South Vietnamese so America can slowly withdraw its troops B.Order an immediate removal of Americans from Vietnam. c. Meet with the North Vietnamese and

    asked on April 7, 2016
  15. Math

    When Albert flips open his mathematics textbook, he notices that the product of the page numbers of the two facing pages is 156. Which equation could be used to find the page numbers that Albert is looking at? a. x+(x+1)=156 b.(x+1)+(x-2)=156

    asked on March 28, 2009
  16. Math

    Megan answered 18 questions correctly on a test. That is 75 percent of the total number of questions. How many questions were on the test?

    asked on April 11, 2017
  17. AP Chemistry

    You are given a small bar of an unknown metal X. You find the density of the metal to be 10.5g/cm3. An x-ray diffraction experiment measures the edge of the face-centered cubic unit cell as 4.09 A. (1A=10^-10m) Identify X.

    asked on November 14, 2009
  18. chemistry

    what is the empirical formula for a compound whose molecular formula is C2Cl6

    asked on October 16, 2010
  19. Math

    How do you find the answer for this: Pam is playing with red and black marbles. The number of red marbles she has is three more than twice the number of black marbles she has. She has 42 marbles in all. How many red marbles does Pam have? a. 13 b. 15 c. 29

    asked on May 25, 2009
  20. DESPERATE NEED OF HELP--Chemistry, almost done

    Calculating Yield--need some help finishing problem. Almost done, just need help one ONE step, please help!!? Well we did a lab on limiting reagent/reactants. The balanced equation is Sr(NO3)2 + 2KIO3 --> Sr(IO3)2 + 2KNO3 Mols of Sr(NO3)2 used was .005023

    asked on February 28, 2007
  21. Math plz check if correct

    In multiplication, if one term is negative and one term is positive, the result will always be ______. A. equal to zero B. negative C. inverted D. positive my answer is A

    asked on August 31, 2014
  22. Math

    Toni rows a boat 4.5 km/h upstream and then turns around and rows 5.5 km/h back downstream to her starting point. If her total rowing time is 48 min, for how long does she row upstream? you can express your answer to the nearest minute. I don't understand

    asked on January 17, 2009
  23. chemistry

    Suppose f′′(x)=−36sin(6x) and f′(0)=−5, and f(0)=−3 f(π/3)=?

    asked on November 18, 2016
  24. algebra

    To find the amount A in an account after t years with principal P and an annual interest rate r compounded continuously, you can use the formula

    asked on December 13, 2014
  25. Algebra

    Find a mathematical model representing the statement. (Determine the constant of proportionality.) v varies jointly as p and q and inversely as the square of s. (v = 2.1 when p = 4.2, q = 5.4 and s = 2.4.) v =

    asked on November 25, 2014
  26. Dine

    Men spend an average of 29 minutes per day on weekends and holidays exercising and playing sports. They spend an average of 23 minutes per day reading. A random sample of 25 men resulted in a mean of 35 minutes exercising with a standard deviation of 6.9

    asked on November 10, 2014
  27. Advanced Accounting

    Mr. Right and Mr. Wrong own an antique store in a partnership. They share profits and losses equally and receive an annual salary of $50,000, as per the partnership agreement. Mr. Right travels the country buying antiques. Mr. Wrong manages the store. From

    asked on December 3, 2012
  28. Accounting

    Financial Accounting 1. The following information was made available from the income statement and balance sheet of Meranda Company: ITEM 12/31/2010 12/31/2009 Accounts Receivable $ 42,000 $ 45,100 Accounts Payable 27,900 24,500 Merchandise Inventory

    asked on October 19, 2012
  29. Math

    Which interval notation represents the set of all numbers from 2 through 7, inclusive? a. (2,7} b. (2,7) c. {2,7) d. {2,7}

    asked on April 14, 2009
  30. French

    How would you use the word "gros" in french for masculine, plural?

    asked on March 31, 2009

    Which form best describes this poem? narrative poem haiku free verse lyric poem

    asked on March 2, 2017
  32. Science

    Fill in the blank- The gravitational force between two objects is proportional to the ______ of the masses of the objects.

    asked on October 30, 2013
  33. Advanced Accounting

    Mr. White (invested $20,000) and Mr. Black (invested $10,000) are in a partnership to run a marketing firm. They share profits and losses in the ratio of 2:1, which is also the ratio of their initial investment in the business. Mr. White manages the office

    asked on December 3, 2012
  34. chemistry

    When 1.70 mol CO2 and 1.70 mol H2 are placed in a 0.850 L container at 395 C, the following equilibrium is achieved: CO2(g) + H2(g) = CO(g) + H2(g) If Kc = 0.802, what are the concentrations of each substance in the equilibrium mixture?

    asked on February 25, 2011
  35. physics

    If a particle of mass 5.7 kg is moving east at 10 m/s and a particle of mass 19 kg is moving west at 10 m/s, what is the velocity of the center of mass of the pair? Give answer is m/s to the west. I tired to use: Vcm = mv/M. I plugged in (5.7)(10) +

    asked on February 28, 2010
  36. French

    In chemise and chemisier, which one is masculine and which one is feminine?

    asked on May 27, 2009
  37. Math

    Charles's Law states that at constant pressure, the volume of a fixed amount of gas varies directly with its temperature measured in degrees Kelvin. A gas has a volume of 250 mL at 300 K. what is an equation for the relationship between volume and

    asked on January 24, 2009
  38. literature

    1. Hopkins's use of "seared," "bleared," and "smeared" is an example of A. metaphor. B. assonance. C. simile. D. alliteration. 2. A villanelle is A. a narrative poem written in blank verse. B. a formal poem using extensive repetition. C. a favorite

    asked on December 9, 2008
  39. Civics

    Which are true statements about direct democracy? Select all that apply. (2 points) A. It can happen at the federal level. B. It can happen at the state level. ** C. It can remove an elected official from office. D. It can only happen through the

    asked on March 26, 2020
  40. Astronomy

    The gravity lock of the Moon to Earth is silimar to the action of a A) giant pendulum B) spinning top C) master key D) tidal wave E) magnetic compass I'm torn between A and E.

    asked on March 14, 2017
  41. Chemistry

    An unknown metal has a mass of 4.67g. It is heated to 95.1 C and then placed in a calorimeter that contains 24.3g of water at 21.7 C. The metal and water both reach a final temperature of 24.6 C. What is the specific heat of this metal? What is the unknown

    asked on November 16, 2016
  42. math

    Webster Digital received a promissory note of $8,000 for 9 months at 7% simple interest from one of its customers. After 4 months, the note was discounted at Bank of Aventura at a discount rate of 10%. What are the proceeds Webster Digital will receive

    asked on May 6, 2016
  43. American History please Help

    The influx of new immigrants in the 1980s and 1990s motivated many native-born Americans to A.campaign to make English their state’s official language. B.push for bilingual education programs in public schools C.boycott businesses that gave jobs to

    asked on April 22, 2016
  44. History

    Opposition to strong environmental protection regulations was motivated by A, Concern that regulation would hurt the economy and kill jobs. B. conservative resistance to expanding federal authority. C.refusal to believe that pollution was a serious problem

    asked on April 7, 2016
  45. English

    In "The Most Dangerous Game, " how does Rainsford's survival depend on his adventurous bold nature? A. He has no sympathy for the animals he hunts. B. He is resourceful and refuses to play by Zaroff;s rules ****** C. He considers Zaroffs "sport"

    asked on May 18, 2015
  46. algebra

    Solve for x. (Round your answer to three decimal places.) log7 x = 1/2 x=

    asked on December 1, 2014
  47. Chemistry

    Suppose 26.0g of sodium bromide is dissolved in 150mL of a 0.60M aqueous solution of silver nitrate. Calculate the final molarity of bromide anion in the solution. You can assume the volume of the solution doesn't change when the sodium bromide is

    asked on July 26, 2014
  48. psychology

    To ensure that the memory of a child is accurate, it is important to: A. ask him to draw a picture of the event B. reward him for telling what happened C. reassure him that his friends have had the same experience D. avoid the use of leading questions or

    asked on January 2, 2013
  49. math

    A superball is dropped from a height of 2 m and bounces 90% of its original height on each bounce. (a) When it hits the ground for the eighth time, how far has it traveled? (b) How high off the floor is the ball on the eighth bounce?

    asked on June 8, 2012
  50. Algebra

    Find all of the zeros of the polynomial function and state the multiplicity of each. f (x) = (x^2 – 16)^2 – 4 with multiplicity 2 and 4 with multiplicity 2 I think this is the ans for this equation. Anyone care to chime in? Thanks!

    asked on July 24, 2009
  51. science

    Scientists believe that Earth's early atmosphere changed in composition as a result of a. the appearance of oxygen-producing organisms b. the drifting of the continents c. the changes in Earth's magnetic field d. a transfer of gases from the Sun

    asked on April 6, 2009
  52. Conceptual Physics

    If an airplane travels 250 km due north in 1/2 hour, what is its velocity? 500 km / hr 500 km / hr north 250 km / hr I think the answer is b?

    asked on September 18, 2018
  53. Algebra

    Identify the property that justifies the statement (5+7)6=30+42 Would this be the distributive property or Inverse Prop of Multi? Kind of confused Thank you

    asked on February 13, 2017
  54. American History

    The economy rebounded in 1897 due to the A. economic policies of President McKinley. B.withdrawal of the Populists from national politics C.discovery of gold in Alaska D. Decline of the general price index. My answer is A

    asked on April 16, 2016
  55. History

    Which region of the country was a beneficiary of deindustrialization during the 1970s? A. Northeast B. Southwest . C. Midwest S,northwest My answer is Northeast

    asked on April 8, 2016
  56. us history

    Which factor contributed to growing conflict over slavery from the 1820s through the 1850s

    asked on February 18, 2016
  57. math

    Vesna Vulovic survived the longest fall on record without a parachute when her plane exploded and she fell 6 miles and 551 yards. What is this distance in yards? What is this distance in meters? (round yards to nearest whole number, round meters to one

    asked on September 30, 2015
  58. English

    Which quote from "The Morning of June 28, 1948" bes supports the conclusion that the public strongly disliked "The Lottery?" A. "this, as any writer of stories can tell you, is not a usual thing." B. "your story has kicked up quite a fuss around the

    asked on May 18, 2015
  59. english

    Identify the verbal in this sentence as infinitive, gerund or participle. Wearing protective clothing is a good precaution against infection.

    asked on July 27, 2014
  60. math

    Sandra has a collection of beads. Of the beads, 45% are silver. She has 108 silver beads. How many beads are in her collection?

    asked on June 21, 2014
  61. Grammar

    what prefix turns the word "town" into a word meaning "center of town"?

    asked on February 19, 2013
  62. Math

    Dorian's score of 558 on the writing portion of the 2009 SAT exam placed him in the 72nd percentile. If the mean on this exam was 493, what was the standard deviation?

    asked on November 13, 2012
  63. Math

    Study the number pattern in the table below and complete 2^3 (0x3^2)+(3x2)+2 8 3^3 (1x4^2)+(3x3)+2 27 4^3 (2x5^2)+ (3x4)+2 64 5^3(3x6^2)+(3x5)+2 125 6^3 ? ? ? ? ? ? ? ? ? 10^3 ? ? ? Is the pattern 6^3 (4x7^2)+(3x6)+2 216 7^3 (5x8^2)+ (3x7)+2 343 8^3

    asked on June 19, 2009
  64. Math

    A movie theater recorded the number of tickets sold daily for a popular movie during the month of June. A box-and-whisker plot represents the number of tickets sold. minimum-100 maximum-8 1st quartile-300 median-400 3rd quartile-600 Which conclusion can be

    asked on June 10, 2009
  65. Math

    Which ordered pair is a solution of the system of equations y=x^2-x-20 and y=3x-15? a. (-5,-30) b. (-1,-18) c. (0,5) d. (5,-1) When I solved the system of equations I got 5 and -1. What do I do next?

    asked on May 17, 2009
  66. Math

    how do you find the constant of variation k for the direct variation? for example, 4x + -6y. how do you find k?

    asked on January 30, 2009
  67. 8th grade

    Surface ocean currents located at 40 degrees south latitude and 90 degrees west latitude generally flow toward the (1) northeast (2) southeast (3) southwest (4) west

    asked on December 27, 2008
  68. Math

    1. A very magical teacher had a student select a two-digit number between 50 and 100 and write it on the board out of view of the instructor. Next, the student was asked to add 76 to the number, producing a three-digit sum. If the digit in the hundred’s

    asked on September 22, 2008
  69. Physical Science

    An elephant drags a tree trunk along a rough horizontal surface by means of an attached rope which makes an angle of 30° with the horizontal. The force in the rope is 4 000N. CALCULATE the horizontal component of the force exerted by the rope on the tree

    asked on February 14, 2017
  70. calculus

    Water leaking onto a floor creates a circular pool with an area that increases at the rate of 3 square inches per minute. How fast is the radius of the pool increasing when the radius is 10 inches?

    asked on January 8, 2017
  71. calculus

    Jen needs to make a flyer for her dog's birthday party. She wants the flyer to contain 40 square inches of printed portion and she wants to use 1 inch of each side as well as 2 inches of top and bottom of the paper for decoration. What size paper should

    asked on December 21, 2016
  72. English

    Edgar Allan Poe uses foreshadowing in "The Cask of Amontillado" to create mystery in which of the following quotes? A. "he had on a tight-fitting parti-striped dress, and his head was surmounted by the conical cap and bells." ****** B. "and as for

    asked on May 18, 2015
  73. Math

    A student scores 74 out of 100 on a test,If the maximum score is 100. What score does the student need at least an average of 80?

    asked on March 1, 2015
  74. Math Problem (please help)

    The simple interest on an investment is directly proportional to the amount of the investment. By investing $4250 in a certain bond issue, you obtained an interest payment of $106.25 after 1 year. Find a mathematical model that gives the interest I for

    asked on September 9, 2014
  75. check and see if correct

    Which organ is NOT a part of the digestive system? A. Esophagus B. Gallbladder C. Kidneys D. Mouth My answer would be mouth

    asked on September 7, 2014
  76. Math check see if i;m coorrect

    In division, a problem includes a divisor, a dividend, and a(n) ______. A. product B. sum C. expression D. quotient My answer is b

    asked on August 31, 2014
  77. Finance

    On August 1, 2005 you invested $3,000 into a mutual fund. You then invested $1,000 into that same mutual fund on the first day of August for each of the years 2006 through 2013. You averaged a 7.25% annual rate of return on your investment in this mutual

    asked on September 20, 2013
  78. psychology

    At the age of four months, Zach was excitable and fearful. His dad taped a colorful picture beside the changing table to entertain Zach during diaper changes. Zach overreacted to the picture and became agitated and nervous. During his school years, Zach is

    asked on January 3, 2013
  79. Advanced Accounting

    GAAP rules are clear about when a company needs to consolidate or not, but companies tend to find loopholes to circumvent this rule. GAAP clearly indicates that consolidated financial statements are “usually necessary for a fair presentation when one of

    asked on December 3, 2012
  80. physics

    After 6.00 kg of water at 80.4 oC is mixed in a perfect thermos with 3.00 kg of ice at 0.0 oC, the mixture is allowed to reach equilibrium. When heat is added to or removed from a solid or liquid of mass m and specific heat capacity c, the change in

    asked on December 1, 2012
  81. Psychology

    A psychologist is performing an experiment involving a controlled group and an experimental group. With the experimental group, the psychologist is giving a placebo and labeling it as caffeine pill. The control group receives a caffeine pill, which is

    asked on November 18, 2012
  82. Physics

    Determine the stopping distance for a skier moving down a slope with friction with an initial speed of 20.6m/s. Assume μk=0.178 and θ=5.27.

    asked on October 28, 2012
  83. Calculus

    find y' if sin^-1(xy)=cosy

    asked on February 16, 2012
  84. Physics

    The drawing shows an ideal gas confined to a cylinder by a massless piston that is attached to an ideal spring. Outside the cylinder is a vacuum. The cross-sectional area of the piston is A = 2.50 10-3 m2. The initial pressure, volume, and temperature of

    asked on November 16, 2011
  85. psychology

    As we age, our physical functioning deteriorates. This is most likely due to reduced efficiency in basic cellular processes. One cause of this is thought to be

    asked on May 21, 2010
  86. math

    Two dice are rolled. What is the probability that the sum of the dots on the upward faces is NOT 12

    asked on April 25, 2010
  87. Science

    When 1 gram of liquid water at 0 degrees Celsius freezes to form ice, how many total calories of heat are lost by the water and how do you know? a. 1 b. 0.5 c. 80 d. 540

    asked on June 15, 2009
  88. Syllables

    How many syllables are in chocolate? 2 or 3?

    asked on June 7, 2009
  89. Math

    How do you find the percentile rank of 4.6?

    asked on May 30, 2009
  90. Math

    How do you know if the relationship shown by the data in a table is linear?

    asked on April 13, 2009
  91. math

    Suppose you need $2.40 in postage to mail a package to a friend. You have 9 stamps, some $0.20 and some $0.34. How many of each do you need to mail the package? So to solve this problem, I came up with two inequalities: 1. a + b is less than or equal to 9

    asked on April 10, 2009
  92. math

    The length of a rectangle is 5 cm more than twice the width. The perimeter of the rectangle is 34 cm. Find the dimensions of the rectangle.

    asked on April 1, 2009
  93. Math

    Define variable and write a system of equations for this situation. Solve using substitution. A farmer grows only sunflowers and flax on his 240-acre farm. This year he wants to plant 80 more acres of sunflowers than that of flax. How many acres of each

    asked on March 31, 2009
  94. Science

    The separation of P-waves and S-waves on a seismogram recorded 4500 km from the epicenter of an earthquake is six minutes. On another seismogram that separation is seven minutes. Is the second station closer to or more distant from the epicenter? Explain.

    asked on March 16, 2009
  95. binomial random variables

    compute the probability of x successes in the n independent trials of the expirement. n=10 p=0.4 x=3

    asked on March 1, 2009
  96. Science/Math

    West Point lies on the west bank of the Hudson River in New York state, about 80 km from where the river enters the Atlantic Ocean. The elevation of West Point is 3 m. If sea level rises at a rate of 4 mm per year, how long will West Point remain above sea

    asked on February 5, 2009
  97. Science

    Waste produced by people in New York State has been dumped into the Atlantic Ocean, where it is distributed by surface ocean currents. Which coastal area is most likely to become polluted by this waste? A west coast of Mexico B south coast of South America

    asked on February 5, 2009
  98. Science

    What is the source of most of the sodium, magnesium, and calcium ions in seawater? A weathering of seafloor rocks B weathering and erosion of continental rocks C deep-ocean organic-matter sediments D gases from underwater volcanic eruptions

    asked on February 5, 2009
  99. literature

    One difference between tragedy and comedy is that tragedy?

    asked on December 10, 2008
  100. Chem Question

    What is the molarity of a NCL solution if 37.50 mL of the acid is needed to neutralize 25.00 mL of 0.0725 M NaOH? I'm not quite sure how to go about doing this one. And also this one thing. The following technical errors were committed in standardizing the

    asked on March 8, 2007


  1. 1
  2. 2
  3. 3
  4. 4
  5. 5
  6. 6
  7. 7
  8. 8
  9. 9