Posts by Amanda

Total # Posts: 2,618

  1. Algebra

    In which quadrants are the sign of first and second coordinates different
  2. Algebra

    Find x such that point (x,9) is 10 units from (9,3)
  3. Geometry

    if EF=2x-10 FG=3x-9, and EG=21 find the value of x, EF, and FG
  4. Chemistry

    Okay, I think I got it! Thanks a bunch :)
  5. Chemistry

    I have this problem.... Hexane has a density of 0.659 g/ml. How many milliliters (mL) would a student need to pour in order to get 49.5 g of hexane? Am I to solve by using mass = density x volume? And if so, is the answer 32.62mL?
  6. i don't understand this math

    4 is A those of u who think its c are wrong
  7. Algebra 2

    2x-y+=-9 3x-8y=-7 using the substitution method.
  8. Physics

    17.2
  9. AP Physics

    The volume of liquid flowing per second is called the volume flow rate "Q" and has the dimensions of [L]^3/[T]. The flow rate of a liquid through a hypodermic needle during an injection can be estimated with the following equation. Q = pi * R^n (P2 - P1) / 8ηL ...
  10. math

    500 becuase it takes away a hundred mph with the aerodynamicness
  11. Theory to Practice

    it would be b because it is one of the biggest obsticles as a begginner
  12. mr sus

    it will show the teacher that you have fully grasped the entire concept of what has been taught to you.
  13. Economics

    what exactly ?
  14. Chem

    What is 1250.37986 with 3 significant figures?
  15. Physics

    (a) Find the capacitance of a parallel-plate capacitor made of two 5 cm×5 cm square plates separated by 1 mm. (b) If 50 V is applied to this capacitor, how much energy is stored?
  16. Physics

    Three positive particles of charges 1 μC, 2 μC, 3 μC, and 4 μC, are located at the corners of a square of side 1 cm. Calculate the potential in the center of the square, taking V = 0 at a great distance.
  17. Physics

    How much work does the electric field do in moving a 2 μC charge from a point with a potential of +20 V to a point with a potential of −20 V?
  18. physics help please!

    Never mind I figured it out the answer is 67.3614 if anyone needs help
  19. physics help please!

    A race car is one lap behind the lead race car when the lead car has 57 laps to go in a race. If the speed of the lead car is 66.2 m/s, what must be the average speed of the second car to catch the lead car just before the end of the race (i.e., right at the finish line...
  20. physics

    Tammy leaves the office, drives 43 km due north, then turns onto a second highway and continues in a direction of 30◦ north of east for 80 km. What is her total displacement from the office? and At what angle is her displacement? (Consider east to be 0◦ and ...
  21. Math/Chemistry PLS HELP

    Find the absolute and percent relative uncertainty and express each answer with a reasonable amount of significant figures. 9.2(+ or -0.7)*(0.0054(+-0.3)+0.0056(+-0.7) The Algebraic answer: 0.1012 Absolute error? Relative error %?
  22. Health

    The answer is A. Added sugars are sugars and syrups that are added to foods or beverages when they are processed or prepared. This does not include naturally occurring sugars such as those in milk and fruits.
  23. Chemistry 314

    Five mineral samples of equal mass of calcite, CaCO3 (MM 100.085) , had a total mass of 12.4 ± 0.1 g. What is the average mass of calcium in each sample? (Assume that the relative uncertainties in atomic mass are small compared the uncertainty of the total mass.) (Input...
  24. chemistry

    A volume of 29.62 ± 0.05 mL of HNO3 solution was required for complete reaction with 0.8896 ± 0.0008 g of Na2CO3, (FM 105.988 ± 0.001). Find the molarity of the HNO3 and its absolute uncertainty. I have the molarity of HNO3 = 0.5667
  25. Chemistry

    A volume of 29.62 ± 0.05 mL of HNO3 solution was required for complete reaction with 0.8896 ± 0.0008 g of Na2CO3, (FM 105.988 ± 0.001). Find the molarity of the HNO3 and its absolute uncertainty. I have the molarity of HNO3 = 0.5667
  26. Chemistry

    Five mineral samples of equal mass of calcite, CaCO3 (MM 100.085) , had a total mass of 12.4 ± 0.1 g. What is the average mass of calcium in each sample? (Assume that the relative uncertainties in atomic mass are small compared the uncertainty of the total mass.) (Input...
  27. calculus 1

    THANK YOU!!!!!
  28. calculus 1

    If you can program a calculator or computer, estimate the length of the curve f(x) on the given interval using largest n's. f(x)=56cos(x), for x is greater than/equal to 0 and x is smaller than/equal to pi/2.
  29. Chemistry 314

    What NaCl concentration results when 254 mL of an 0.880 M NaCl solution is mixed with 412 mL of a 0.450 M NaCl solution?
  30. Chemistry

    I figured it out thanks to related questions.
  31. Chemistry

    75.0 mL of a 1.80 M solution is diluted to a volume of 258 mL. A 129-mL portion of that solution is diluted using 187 mL of water. What is the final concentration?
  32. Chemistry

    75.0 mL of a 1.80 M solution is diluted to a volume of 258 mL. A 129-mL portion of that solution is diluted using 187 mL of water. What is the final concentration?
  33. Structured English Immersion

    How can the continuum of strategies be used inappropriately in the classroom?
  34. algebra 2

    Tickets for the hamiltons high school's summer play are $3 for students and $5 for non-students. on opening night 937 tickets were sold and $3943 is collected. How many tickets were sold to students? non-students?
  35. 9th grade algebra/Ms Sue

    22
  36. geography

    A stream has jumped its banks and is starting to flow through a formerly dry prairie. Trees are beginning to take root near the riverbed and are starting to develop a canopy. Explain what you believe will happen to the native grass that has flourished in this spot up until now...
  37. math

    You have an aquarium for your new pet, “Shamu” the killer whale, that contains 100,000 pounds of ocean water with a salinity of 30 o/oo. a. Calculate how many pounds of salt are currently in the aquarium. b. You think Shamu may be allergic to salt, so you decide to ...
  38. Social Studies

    YES FOR SURE
  39. Science

    How gravitational acceleration is used to benefit mankind and the environment. How can rural people also benefit from thr use of gravitational acceleration?
  40. Health

    Its d. Reduce daily sodium intake to less than 2,300 milligrams (mg) and further reduce intake to 1,500 mg among persons who are 51 and older and those of any age who are African American or have hypertension, diabetes, or chronic kidney disease.
  41. Hea;th

    The answer is D. Currently, many of the foods and beverages Americans eat and drink contain empty calories – calories from solid fats and/or added sugars. Solid fats and added sugars add calories to the food but few or no nutrients.
  42. SPANISH

    Change the following constructions to an adjetivo posesivo and noun according to the example: Example: la mesa de ella su mesa 1. el gato de Juan y María 2. las sillas de ti 3. el hermano de mí 4. la computadora de tu y yo 5. la mesa de usted 6. la mesa de ...
  43. design

    Have I the write answer so far? 1a 2b 3b 4b 5c 6d 7D 8d
  44. chemistry

    What is the molarity of a solution containing 18.0 g of KCl in 354 mL of solution?
  45. Principles of Management - Strategic Management

    please review my answers! 1. which of the following is an example of an internal stakeholder of an organization? A) distributors B) suppliers C) Unions D) Individual Workers It is: D) Individual Workers 2. Two drug companies agree to work together to pool their research and ...
  46. Writeacher maybe you can help ? Principles of Management - Effective Management

    Are you a business expert? I saw your responses under the business catagory?
  47. Principles of Management - Effective Management

    Do you know of a Business Expert on here that could also double check my work?
  48. MS. SUE HELP! Principles of Management - Effective Management

    I am trying to enter the corse work today, please help!
  49. Principles of Management - Effective Management

    Please double check my answers please! 1. a team manager is resolving the conflicts that exist among the members of his team in an organization. this is an example of: a. planning b. organizing c. leading d. controlling answer C 2. a manager at a grocery store is trying to ...
  50. College Math

    Write the mixed number as an imprper fraction. 7 1/9 = A. 64/9 b. 22/3 c. 7/1 d. 65/9 I think the answer is A.
  51. math

    If the graph x squared + y squared = c contains the point (-3,5), then c = ?
  52. Math

    A line segment begins at point (3,4) and has a length of 13 units. What are the possible endpoints of this line segment?
  53. Math

    the perimeter of an equilateral triangle is 50 inches longer than the length of one side. What is the length of one of the sides?
  54. chemistry

    how many grams of c2h6o contain the same number of oxygen atoms as 0.75 mol of h2o?
  55. Math

    Find how much interest $15,000 earns in 4 years in a certificate of deposit paying 8.5% interest compounded quarterly.
  56. vocabulary

    is the indirect definition of gloomy, dismal or depressing? please help.
  57. physics

    A rock is tossed straight up with a speed of 29m/s. When it returns, it falls into a hole 13m deep. Solve for rock's velocity as it hits the bottom of the hole. &How long is the rock in the air, from the instant it is released until it hits the bottom of the hole?
  58. child care

    be able to acquire most of your equipment from free and inexpensive sources
  59. 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? Assume the lower ...
  60. Busniess English - Negative and Persuasive Message

    Which sentence presents an alternative in appropriate way? a. "The 11 a.m. flight is completely sold out, so I booked you on the 2 p.m. flight. Hopefully that will work for you." b. "We are out of the red units, so we went ahead and shipped you 12 green ones ...
  61. business english -

    Thank you so MUCH!
  62. business english -

    Indicate the alternative that both correctly evaluates the following sentence and correctly explains the reason for the evaluation. "As soon as you provide your date of birth on Line 2, your application for a flexible spending account will be processed." a. Good ...
  63. Business English - WRiting to build goodwill

    C. Main idea(s), background information, negative elements, benefits, goodwill ending.
  64. Business English - WRiting to build goodwill

    4. A 11. C 19. B
  65. Business English - WRiting to build goodwill

    Can someone double check my answers? 1. Which way of askin for action carries the highest level of politeness? A. a polite order B. an indirect request c. a question d. an order answer is: c. a question 2. Which of the following statements most effectively applies you-attitude...
  66. Business English

    I thought I updated this, however I entered my answers that I stated above for my grade. I got 17 out of 20 correct, the wrong answers were: 4. It should of been C. 11. Should of been D. 12. Should of been B.
  67. Business English "Designing the page and ect"

    Please double check my answers for me. 1. The appearance of a document can do all of the following except: A. establish rapport with the audience. B. guide your readers' attention C. substititue the written text in the document. D. Build goodwill. answer: C. Substitute the...
  68. business english

    I had originally answered D however the exam stated that was wrong, Im trying to retake it and I am still coming back to D but I don't want to get the answer wrong again.
  69. business english

    User: Which of the following is NOT an example of parallel structure? A. "Yoga can help you develop flexibility, reduce stress, and increase relaxation." B. "Learn how to analyze business audiences, improve your style, and edit thoroughly." C. "You are...
  70. biology i need help urgent

    what characteristic distinguishes arthropods from other invertebrates? a. the colem b.the endoskeleton c.jointed appendages d.bilateral symetry
  71. biology

    what is a notochord, and what is the notochord surrounded by
  72. Busniess English

    Select the correct punctuation to place on the line. Gusty winds damaged several power lines__ therefore, no one in our town has electricity. A. : B. ; C. - D. .
  73. chemistry

    mass of crucible- 18.50g mass of crucible+hydrate- 19.50g mass of crucible+anhydrous salt 1st heating- 19.10g mass of crucible+anhydrous salt 2nd heating- 19.10g Questions: 1. calculate mass of water lost from your sample 2. calculate % of water in sample CuSO4*5H2O 3. ...
  74. Management

    Which of the following statements about Maslow's needs hierarchy is correct? A. Esteem needs must be satisfied before one strives to fulfill social needs. B. Self-actualization is a growth need. C. safety needs are more basic than physiological needs. D. Social needs are ...
  75. finance

    A corporation has a total of $500 million and 100 million shares outstanding. It's ROE is 15%. Calculate the EPS. I know the EPS= ROE x Book value per share How do I find the book value
  76. Chemistry

    You want to prepare a pH=4.50 buffer using sodium acetate and glacial acetic acid. You have on hand 300 mL of 0.100 M sodium acetate. How many grams of glacial (water free) acetic acid should you add to prepare the buffer? (Ka of acetic acid is 1.8e-5 at: 25 degrees Celsius)
  77. Chemistry

    You want to prepare a pH=4.50 using sodium acetate and glacial acetic acid. You have n hand 300 mL of 0.100 M sodium acetate. How many grams of glacial acetic acid should you add to prepare the buffer? (Ka of acetic acid is 1.8e-5 at: 25 degrees Celsius)
  78. math

    i the conveyor belt takes 54 seconds to move gravel from the bottom of the conveyor belt to the tope at a rate of 3 feet per second, how high does the conveyor belt lift the gravel?
  79. geometry

    in the diagram below of triangle TEM, medians line TB, line EC and line MA intersect at D, and TB = 9. Find the length of TD.
  80. geometry

    in the diagram below of triangle TEM, medians line TB, line EC and line MA intersect at D, and TB = 9. Find the length of TD.
  81. business english

    Select the correct punctuation to place on the line. I found an inspiring bumper sticker with a quote from Mahatma Gandhi_"Whatever you do will insignificant, but is very important that you do it." a. : b. ; c. - d. .
  82. physics

    a bus engine can operate at very high temperatures . if one of the cylinders has a volume of 1 litre and is initially at 25°C and atmospheric pressure , what is the temperature when the gas in the cylinder is reduced to a volume of 100cubic centrimeters and pressure of ...
  83. Chemistry

    What is the pressure of a sample of Chlorine gas if the gas sample contains 0.25 moles of Chlorine and has a volume of 150 L with a temperature of 25 K?
  84. Chemistry

    what do i plug in for v2 and p2 then?
  85. Chemistry

    p1v1/t1=p2v2/t2 (5)(100.0)/510=...
  86. algebra

    -71+square root of 1/142 simplify
  87. math

    x^2+x+3=0
  88. math

    30d^2+71d+42=0
  89. math

    4x-y=7 5x+y=20
  90. math

    1/5x+y=2 x-10++-5y
  91. math

    2x^-15y^15/x^20y^-10
  92. math

    A box with no top is to be constructed from a piece of cardboard whose width measures x cm and whose length measures 6 cm more than its width. The box is to be formed by cutting squares that measure 2 cm on each side from the four corners, and then folding up the sides. If the...
  93. math

    the printed matter on a 18 by 22 centimeter page of a book must cover 96 square centimeters.If all margins are to be the same width, how wide should they be?
  94. math

    3x+8 over 5 + 7/5= -7x over 4
  95. math

    a/5-1/5=-6
  96. Physics

    how do you know what to plug into the equation?
  97. Physics

    Two positive charges with the same magnitude are one meter apart. Find the magnitude of the charges if the force between them is one Newton.
  98. english speech

    Speech please
  99. Amortization of Loans

    A car is purchased for $9,192.57 with $1470 down and a loan to be repaid at $200 a month for 2 years followed by a balloon payment. If the interest rate is 6% compounded monthly, how large will the balloon payment be?
  100. Probability

    From a box containing 7 blue, 5 red, 3 green, and 9 yellow marbles, 2 are drawn one at a time without replacing the first marble before the second marble is drawn. Find the probability that one is blue and one is yellow.
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