Veronica

Newest questions posted by Veronica
  1. history,geography,consumer,tourism and Maths liter

    What course can i do at university with the subjectS i did
  2. algebra 2

    Sandy has $5,000 invested in three accounts. one account bears 2% annual interest, another 3% and other 5%. she has four times the amount invested at 5% as she does at 2%, and she earned $202.50 for the year. write and solve a system of equations to find
  3. Grammar

    Which is correct? I took this class before. Or I have taken this class before. I think it is the first one.
  4. Calculus

    Suppose that a car can accelerate from 30 mph to 50 mph in 4 seconds. Assuming a constant acceleration, find the acceleration (in miles per second squared) of the car and find the distance traveled by the car during the 4 seconds.
  5. Math

    A population of 1000 individuals has 110 births and 10 deaths in a year. Its growth rate (r) is equal to?
  6. Grammar

    Is this correct? "I'm at Seattle now."
  7. English

    For the statement: "Mail your transcripts immediately after the posting of your winter/spring grades." Does this mean mailing my winter term grades AND my spring term grades.
  8. English

    What does "interactive effect" mean (in science)? I am a bit confused with this phrase, but how I interpreted it is that it involves examining the effects of two independent variables on a dependent variable. For instance, examining the effect of different
  9. Chemistry

    How much 5 M KOH must be added to 1.0 L of 0.1 M glycine at pH 9.0 to bring its pH to exactly 10.0? The amino group of glycine has a pKa of 9.6.
  10. Chemistry

    How much 5 M KOH must be added to 1.0 L of 0.1 M glycine at pH 9.0 to bring its pH to exactly 10.0? The amino group of glycine has a pKa of 9.6.
  11. Interview

    One day, a pharmacy school classmate gives you a sheet containing questions for an upcoming exam. How would you handle the situation and what issues would you consider important in coming to a decision about what to do?
  12. Physics

    STATE whether you expect the following entities to be in thermal equilibrium with their surroundings under normal circumstances. A. A desk - I think yes B. A person- I think yes C. The walls of a room- I think yes D. The sun- I think no
  13. Physics

    A plutonium- 239 nucleus initially at rest undergoes alpha decay to produce a uranium-235 nucleus. The uranium-235 nucleus has a mass of 3.90 x 10^-25 kg and moves away with a speed of 2.62 x 10^5 m/s. Determine the minimum wage electric potential
  14. chemistry

    If 25 g of NH4Cl is dissolved at 80C, how many additional grams would be needed to make the solution saturated?
  15. Math

    A dictionary costs $24. The total cost of the dictionary and 4 identical diaries is the same as 7 diaries. How much does 1 diary cost?
  16. Algebra

    X is a number.It is divided by 3,and 5 is subtracted from the result.The new result is then multiplied by 7.If the final answer is 28,what number is X?
  17. Math

    Alicia, Bill, and Ross are in Group A. David, Maddie, and Shelby are in Group B.The students are going to have their pictures taken. They will stand in 2 rows by group, and group members cannot be separated. If 2 girls or 2 boys cannot be standing next to
  18. Math

    Becky has $60 and Nina has $120. How much money must Becky give to Nina so that the amount of money Nina has is 5 times what becky has?
  19. Math

    Natalie had some marbles. She gave 1/3 of them to her brother,who kept 12 marbles for himself and gave the rest to 5 friends.If each friend received 7 marbles, how many marbles did Natalie have at firts?
  20. Math

    A toy maker packed 29 boxes with 9 tops each and had 3 top left. How many more boxes of tops would he have if he had packed 3 tops into esch box instead?
  21. Math

    Holly left her apartment and walked up 3 floors to return a book to Kayla. She then went down 4 floors to Paige's place to get the class noted from her. Finally?Holly walked up 2 floors to look for Jenna, who was not home. If Jenna lives on tje eighth
  22. Math

    carmela cut a cake into 12 equal-sized pieces. She ate 2/12 of the cake and her brother ate 3/12 of the cake.What fraction of the cake
  23. Algebra

    A rhombus ABCD has opposite vertices at A(-3,2) and C(9,-2). Find the equations of its diagonals. One of the other vertices is B(4,3). Find the fourth vertex D Equation of AC Equation of BD Coordinates of D
  24. Algebra PLEASE HELP ME

    find the equation of the straight line through A(3,20) which is perpendicular to the line passing through the points B(-2,8) and C(11,8). Hence, find the area of the triangle ABC, giving your answer in the simplest possible form.
  25. Math

    A teacher tallies up the grades on a math test in a class of 34 students, the results are A1, B11, C16, D3, F1. What is the empirical probability of a student getting a C? Express as a fraction.
  26. Finance

    I'm struggling with being able to solve this question: A company wants to raise money in the capital markets. The firm intends to sell $18 million of common stock; the expected return is 15%. In addition, the company plans to issue $5 million of debt, the
  27. Chemistry

    Which of the following compounds has an atom with an unfilled valence shell of electrons? A) H3O+ B) BF3 C) CH3OH D) NaI
  28. Physics

    A 70kg wannabe stuntman at the edge of a roof top jumps vertical up with a speed of 4m/s and falls on a trampoline 2meters below where he started. If the trampoline acts like a Hooke's spring and does a maximum extension of 0.284m going down towards
  29. Physics

    A 70kg wannabe stuntman at the edge of a roof top jumps vertical up with a speed of 4m/s and falls on a trampoline 2meters below where he started. If the trampoline acts like a Hooke's spring and does a maximum extension of 0.284m going down towards
  30. Chemistry

    When a 0.326 g sample of FeCl2·xH2O is heated to remove all water, a mass of 0.254 g remains. Determine the value of x.
  31. precal

    The product of two numbers is 48 and the sum of their reciprocal a is 1/3. Determine the value of the two numbers.
  32. Finance

    Following are selected financial data in thousands of dollars for the Hunter Corporation. 2012 2011 Current assets $ 500 $400 Fixed assets, net 700 600 Total assets 1,200 1,000 Current liabilities 300 200 Long-term debt 200 200 Common equity 700 600 Total
  33. Physics

    An air plane has a mass of (1.7x10 to power 6) kg, and the air flow past the lower surface of the wings at 95m/s. If the both wings have a surface area of 1200cubic metre, how fast must the air flow over the upper surface of the wings if the plane is to
  34. Physics

    During each heart beat, approximately 70cubic cm of blood is from the heart at an average pressure of 105mmHg. Calculate the power output of the heart, in watts, assuming 70 beats per minute.
  35. Physics

    Is the tension on a rope zero just before a person releases it after swinging from one side of a river to the other?
  36. Physics

    A 56kg student runs at 5m/s, grabs a hanging rope, swings out over a lake. He releases the rope when his velocity is zero. The angl when he releases the rope is 29.25degrees. What is the tension in the rope just before he releases it? What is the maximum
  37. Physics

    A 56kg student runs at 5m/s, grabs a hanging rope and swings out over a lake. He releases the rope when his velocity is zero. The length of the rope is 10m, what is the angle when he releases the rope? (The person swings from the centre to the right).
  38. maths,science,geography and life science

    What is restorative justice intention in process of human rights?
  39. trig, precalc, math, algebra, trigonometry

    Rewrite: tan(cos^−1 (v)) as an algebraic expression in v. Please help me understand.
  40. math

    How is solving -4x=-4.8 different from solving -1/4x = -4.8? How are the solutions related?
  41. math

    Find the 5,550th term in the sequence 4 1/2, 5, 5 1/2, 6, 6 1/2
  42. Chemistry

    How many grams of potassium nitrate, KNO3 are required to make 250 mL solution with a molarity of 0.40 M?
  43. Triginometry

    a yardstick, held vertically on a level surface, cast a shadow 1 foot 5 inch long. Find the tangent of the angles that the rays of the sun make with the horizontal.
  44. Math

    The area of a rectangle is 247 cm^2. The width and length are both whole numbers greater than 1. What are the dimensions of the rectangle?
  45. Algebra 2

    Donald's Jaguar loses value at 8% per year for the first nine years when should he sell it if he wants to receive 62% of what he paid for it?
  46. Algebra

    how do you calculate probabily or this problem. A bag has 8 red, 6blue, 2 yellow and 7 green marbles. What is the probability of selecting a red, not replacing it and selecting a green? 6/21 * 7/21 =42/21
  47. health

    What is a way to boost your self-esteem? A.) Worry about other's opinions. B.) Exhibit risky behaviors. C.) Maintain a negative attitude. D.) Form close relationships. I think the answer is D, but I don't want to get it wrong.. Help?
  48. science

    A box weighing 180 newtons is hanging by rope as shown in the figure. Find the tension T¿.
  49. math

    John is doubling a cake recipe. The recipe calls for 1/4 cup of butter. How much butter should John use?
  50. math

    In a science experiment, the temperature of a glass of water rose 18.24 degrees after six hours. If the temperature rose the same number of degrees per hour, then how many degrees did the water increase per hour?
  51. calculus

    radioactive Carbon 14 in a dead organism decays according to the equation A=A e^.000124t where t is in years and A0 is the amount at t=0. Estimate the age of a skull uncovered in an archeological site if 10% of the original Carbon 14 is still present.
  52. science

    calculate the net force on an object that has a mass of 12kg and acceleration of 4m/sec
  53. higher school

    determine the fishers' ideal price index formular from both the laspeyre and paasche price indices formular
  54. Statistics

    With a known population mean of 100, and a known standard of error of the mean of 7.5, what is the probability of selecting at random a sample whose mean is equal to 110 or greater?
  55. Algebra

    I need some help with this question I really don't understand it and some help going through this problem would be really appreciated :) Use the fact that a/b/c/d=a/b / c/d to simplify each rational expression. State any restrictions on the variables.
  56. Math

    Explain how to solve the following system of equations. What is the solution to the system? 2x+2y+z=-5 3x+4y+2z=0 x+3y+2z=1
  57. Math

    Every year in Delaware there is a contest where people create cannons and catapults designed to launch pumpkins as far in the air as possible. the equation y=15+110x-16x^2 can be used to represent the height, y, of a launched pumpkin, where x is the time
  58. math

    At a given time, Saturn was 9.1 x 10 to the 8th miles from the sun and the earth was 9.3 x 10 to the 7th miles from the sun. by what distance is one planet closer to the sun than the other planets?
  59. PHYSICS

    A uniform plank with mass 20kg and length 12m extends 2m over the edge of a building. A 40kg crate is slid out on the plank. how far can the crate be pushed without toppling the plank? A. 0.5m B. 1m C. 1.25m D. 1.5m E. 2m
  60. Physics

    A 3kg mass is sliding across a horizontal surface at a constant speed while being pulled by rope with tension 20N held at a 53 degree angle above the horizontal. The force of friction is most nearly A. 30N B. 12N C. 16N D. 20N E. 1N
  61. Struggling in Writing

    Should I be ashamed for being a poor writer and reader,since I am in 12 th grade this year? Today,in writing class I struggled.. I could not identify the thesis of an article nor could I spot counterclaim that the author makes. I think I have dyslexia
  62. 8th grade English/Language Arts

    1.)Why does the author of “Always to Remember” discuss Maya Ying Lin’s background? a.)to show that she experienced hardships b.)to appeal to Chinese-American readers c.)to show its influence on her design d.)to show her disinterest in architecture
  63. statisitcs

    The combined math and verbal scores for students taking a national standardized examination for college admission is normally distributed with a mean of 560 and a standard deviation of 180. If a college requires a student to be in the top 40 % of students
  64. Science

    May you please tell me if these are true or false, if they are false then can I have the true statement, thank you In the water cycle, water returns to Earth as (condensation) usually in the form of rain or snow During dry weather, the water level in a
  65. MATH

    A HUMMINGBIRD BEATS IT WINGS 53X SEC HOW MANY TIMES DOES THE HUMMINGBIRD BEATS IN 5 SEC
  66. Science

    Why are aboriginal clan systems considered human social systems?
  67. AP Physics

    Two locomotives approach each other on parallel tracks. Each has a speed of v = 85 km/h with respect to the ground. If they are initially d = 7.0 km apart, how long will it be before they reach each other?
  68. AP Physics

    A car traveling 92 km/h is 130 m behind a truck traveling 75 km/h. How long will it take the car to reach the truck?
  69. chemistry

    When 3.00 moles of sodium are reacted with large amounts of chlorine gas 145.8 g of sodium chloride are produced determine percentage yield
  70. Finacial Accounting.

    I am really struggling with this question and my accounting book is no help at all. A company has $4500 in net sales, $3200 in gross profit, $1300 in ending inventory, and $1800 in beginning inventory. What is the cost of goods sold? Im not looking for the
  71. Chemistry

    A solution buffered at a pH of 5.00 is needed in an experiment. Can we use acetic acid and sodium acetate to make it? If so, how many moles of NaC2H3O2 must be added to a 1.0L of a solution that contains 1.0 mol HC2H3O2 to prepare the buffer. The Ka of
  72. Chemistry

    Determine the concentration of CO32- ions in a 0.18 M H2CO3 solution. Carbonic acid is a diprotic acid whose Ka1 = 4.3 × 10-7 and Ka2 = 5.6 × 10-11.
  73. Chemisty

    A 0.411 g sample of powdered copper mixed with an inert, soluble additive was fully consumed by 23.4mL of 0.602M nitric acid, producing copper (II) nitrate, water, and nitric oxide. What is the percent copper by mass in the sample? 3Cu + 8HNO3 = 3Cu(NO3)2
  74. Chemistry

    what is the pH solution in which 15 mL of 0.10 M NaOH has been added to 25 mL of 0.10 M HCl
  75. Chemistry

    Consider the following equilibrium. 2 SO2 (g) + O2 (g) 2 SO3 (g) The equilibrium cannot be established when __________ is/are placed in a 1.0-L container.
  76. Chemistry

    what volume (mL) of 0.0962M NaOH is required to neutralize 10.0mL of 0.128M H2SO4? I got 26.6mL
  77. algebra

    4x^3-6.68E-7x^2+1.67E-8x-1.04E-10 = 0
  78. Math

    4x^3-6.68E-7x^2+1.67E-8x-1.04E-10 = 0
  79. Chemistry

    I posted this last night, A 0.500L vessel initially contains 0.0125 mol of H2S2 . Find the equilibrium concentrations of H2 and S2. Kc = 1.67 x 10^-7 2 H2S 2 H2 + S2 I have come up with this equation so far, but I am lost now because I don’t even know if
  80. Chemistry

    How many grams of pure H2SO4 can be obtained from 250 grams of iron ore if the ore is 82% FeS2? The reactions involved are given below: 4FeS2 + 11 O2 --> 2 Fe2O3 + 8 SO2 (95% efficient) 2SO2 + O2 --> 2SO3 (90% efficient) SO3 + H2O --> H2SO4 (90% efficient)
  81. Chemistry

    A 0.500L vessel initially contains 0.0125 mol of H2S2 . Find the equilibrium concentrations of H2 and S2. Kc = 1.67 x 10^-7 2 H2S 2 H2 + S2
  82. Chemistry

    I posted this question before and the answer is suppose to be 6.8 L but I keep getting 6.12 L dinitrogen pentoxide n2o5 decomposes by a first-order decomposition in chloroform solvent to yield NO2 and O2. The rate constant at 45°C is 6.2 x 10^-4 mins^-1.
  83. Chemistry

    dinitrogen pentoxide n2o5 decomposes by a first-order decomposition in chloroform solvent to yield NO2 and O2. The rate constant at 45°C is 6.2 x 10^-4 mins^-1. Calculate the volume of O2 obtained from the reaction of 1.00 mol N2O5 at 45°C and 770 mmHg
  84. Chemistry

    dinitrogen pentoxide n2o5 decomposes by a first-order decomposition in chloroform solvent to yield NO2 and O2. The rate constant at 45°C is 6.2 x 10^-4 mins^-1. Calculate the volume of O2 obtained from the reaction of 1.00 mol N2O5 at 45°C and 770 mmHg
  85. Chemistry

    The potassium salt of benzoic acid, potassium benzoate, KC7H5O2, can be made by the action of potassium permanganate on toluene, C7H8. C7H8 + 2 KMnO4 --> 2MnO2 + KOH + H2O If the yield of potassium benzoate cannot be realistically be expected to be more
  86. Chemistry

    The first order rate constant is 1.87 x 10^-3 min^-1 at 37°C for reaction of cisplatin. Suppose the concentration of cisplatin in the bloodstream of a patient is 4.73 x 10^-4 mol/L. Calculate the concentration exactly 24 hours later.
  87. Chemistry

    How many grams of commercial C2H4O2 (97% pure by mass) must be allowed to react with an excess of PCl3 to produce 50.0g of C2H3OCL if the reaction has a 70% yield? 3C2H4O2 + PCl = 3C2H3OCl + H3PO4
  88. Chemistry

    How many moles of KF are contained in 244 mL of 0.135 m KF solution? The density of the solution is 1.22 g/mL.
  89. Chemistry

    At 20°C, an aqueous solution that is 18.0% by mass in ammonium chloride has a density of 1.0512 g/mL What is the molarity of ammonium chloride in the solution?
  90. Chemistry

    the solubility of 1-butanol in water is 7.9g per 100g of water. What is the maximum amount of 1-butanol that will dissolve in 5.9g of water
  91. Chemistry

    What is the mass percent of an aqueous sodium hydroxide solution in which the molality of NaOH is 6.25m? The density of the solution is 1.2219 g/mL
  92. Chemistry

    A sulfuric acid solution that is 65.0% H2SO4 by mass has a density of 1.55 g/mL at 20°C. What is the mass of h2so4 per liter of solution?
  93. Chemistry

    Manganese trifluoride, MnF3,can be prepared by the following reaction. 2 MnI2 (s) + 13 F2 (g) ---> 2 MnF3(s) + 4 IF5(l) What is the minimum number of grams of F2 that must be used to react with 12.0 g of MnI2 if the overall yield of MnF3 is no more than
  94. Chemistry

    If 150 mg of aspirin are rinsed with three portions of 10 mL of water at 25 degrees Celsius, how much aspirin is recovered? Solubility of aspirin in water at 25 degrees Celsius is one gram of aspirin per 300 mL of water.
  95. Pre-cal

    Simplify: A) log(x+1)+3logx B) 2log4np-3log4p C) 2ln(3x)+ln(5x)-ln6xy D) 22log10+log1000-log1
  96. Pre - Cal

    1. Find the vertex of the parabola: 4y^2+4y-16x=0 2. Find an equation of the parabola, opening down, with vertex (-3,1) and solution point (4,-5). 3. The main cables of a suspension bridge are 20 meters above the road at the towers and 4 meters above the
  97. physics

    a rod is having a positive charge and a point charge is placed at a distance 'd' from it making angle 45 degree with one end and 37 degree with the other.calculate field. plz answer its urgent.
  98. chemistry

    How many grams of magnesium are required to produce a total of 4.05g of hydrogen
  99. Physics

    Prove that tanø is equal to U(k) when the block slides down the incline with a constant speed. (Use symbols, not numbers.)
  100. science

    a consumer-producer relationship is best illustrated

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