Posts by Christina

Total # Posts: 948

  1. Math(Please check)

    The y-intercept is correct, but -5400 would not be the slope of the line. Remember that slope represents the rate of change, specifically the change in y divided by the change in x. In this case, y is the value of the automobile and x is the year. If that doesn't help, I ...
  2. Math

    What is the mathematical term for a statement that can be flipped and still remain true? Example: A cat is a feline, and a feline is a cat. AND/OR What is the mathematical term for a statement that becomes false when flipped? Example: A square is a rectangle, but a rectangle ...
  3. sociology

    I need some advice on a paper with the sociological perspective icluds history, biography, social lcation, macro-leve-microlevel and theorcical perspectives on 9-11 survivors
  4. Visual Arts

    what are the 5 parts of a sphere? in order please from left to right (lightest to darkest)
  5. Math- Algebra II

    thank you
  6. Math- Algebra II

    9x^4/16y^6 How to I simplify it must be written in exponential form and no negative exponents. HELP
  7. Psychology final

    Informational Interview Your final project for this course will be a 3- to 5-page paper that consists of the insights you have gained about yourself, your experience with this course, and the information you learned about your career choice during your informational interview...
  8. physics

    An automobile tire is rated to last for 45,000 miles. Estimate the number of revolutions the tire will make in its lifetime.
  9. quant. methods

    yes but how could it be 937.50 minutes when you will pay 100 or 55 dollars either way for 1200 or 1000 minutes. It would need to be over those minutes.
  10. quant. methods

    cant be
  11. quant. methods

    Kim is deciding between two cell phone plans. Plan A charges a fixed monthly fee of $100 for 1200 minutes and .25 per minute over 1200. Plan B charges a fixed monthly fee of $55 for 1000 minutes and .33 per minute over 1000. At what point of usage would Kim be indifferent ...
  12. HIstory

    How did it affect the Guarani Indians when they were first encountered the conquistadors?
  13. math

    answer this x-1/3=1/4
  14. math

    answer this x-1/3=1/4
  15. math

    answer this x-1/3=1/4
  16. Math- Algebra II

    x^2-4x+12=0 Complete the square to solve for x. Okay I know how to do up to here: (-4/2)^2 -12=x^2-4x(-4/2)^2 2-12= x^2-4x+2 -10= DO I FACTOR IT?
  17. Math- Algebra II

    thank you, okay I wasn't' sure
  18. Math- Algebra II

    Simplify (7-3i)^2. So would I do this: (7-3i) (7-3i) then distribute it .... OR (7-3i)^2 square everything 49+9i^2 ? thanks
  19. math

    the study hours are 4, 10, 20, 24, 34, 36, 42 and the z scores are 2.5, negative 1.75, negative .5, 0, 1.25, 1.5, 2.25 and the percentile ranks are 10,25,35,40,50,75,95 what is the study hour with a z score of 1.75, what is the standard deviation of all the students, and what ...
  20. Statistics

    In a survey of 1037 adults from the United States age 65 and over, 643 were concerned about getting the flu. Construct a 90% confidence interval for the population proportion.
  21. Finite Math

    I keep trying to set up this problem to solve it using the Simplex Method, but I can't seem to get the tableau set up correctly. If anyone could help, I would appreciate it: A baker has 150 units of flour, 90 of sugar, and 150 of raisins. A loaf of raisin bread requires 1 ...
  22. Algebra

    Solve by elimination method. 7r-3s=14 3r+7s=64 Could never figure out the elimination method. Would love some help with this one. Thanks
  23. geology

    Since the normal lapse rate is 6.5°C per kilometer, at a height of 2 kilometers the temperature would decrease 13°C (6.5°C × 2 = 13°C). The air temperature at 2 kilometers would be 23°C - 13°C = 10°C.
  24. geology

    10 degrees C
  25. Precalculus

    I've tried many times to get the equation to balance using trig identities like half-angle formulas, power-reducing formulas, and double angle formulas, but I couldn't get the equation to equal out. I only need to work one side to make it equal to the other, like a ...
  26. Precalculus

    How do I solve this? 1 - 4sin^2(x)cos^2(x) = cos^2(2x)
  27. 5th grade

    Consider: 4 children - .5 x 4 = $2 1 man - 1 x 2 = $2 32 women - 32 x 3 = $96 total = $100
  28. Algebra

    Solve: -10<=4x-5<--4
  29. physics

    Thanks for your help :)
  30. physics

    A gas is taken though a single process in which its volume decreases by .25 m^3 as the temp of the gas rises 2deg C. Which of the following people are more likely to have reached the correct conclusion? a. Bob ids this process as adiabatic b. Jill ids this process as ...
  31. physics

    A spring that is .7m in length elongates to 1.06 m when a 20 newton force is exerted to stretch the spring. By how much more does the spring stretch when an additional 8 newtons of force is exerted on it?
  32. physics

    A 5 kg block of average density .625 kg/m^3 has a volume of about _____ cu. m
  33. physics

    An observer detects an apparent frequency of 505 hz coming from a 500 hz source. Which is true? a. the observer is moving due east, away from the stationary source b. the source is moving due west, away from the stationary observer c. the souce and the observer are moving away...
  34. physics

    A dinner plate drops and breaks. This best illustrates the ______ law of THERMODYNAMICS A. 1st b. 2nd c. 3rd d. 4th
  35. chemistry

    Salicyclic acid reacts with methanol to produce methylsalicyclate or winter green and water according to the following reaction: C7H6O3 (s) + CH3OH (l) --> C8H8O3 (s) + H2O (l) What mass methylsalicyclate can be produced from 15.00 grams of salcyclic acid? What mass of ...
  36. chemistry

    Calcium carbonate reacts with hydrochloric acid according to the following reaction: CaCO3 (s) + 2 HCl (aq) --> CaCl2 (aq) + H2O (l) + CO2 (g) How many grams of calcium carbonate would be required to neutralize 50.0 cm3 of 8.00 M HCl?
  37. logarithmic differentiation

    How do you find the logarithmic differentiation of y = x^6x?
  38. logarithmic differentiation

    How do you find the logarithmic differentiation of y = x-cos x ?
  39. Physics

    Thanks! :)
  40. Physics

    a 10 kg ball moving due west at 2m/sec collides with a 4kg ball that is moving due east at 3 m/sec. You determine that immediately after the collision the 10 kg ball is moving due west at 0.57 m/sec. A) this probably IS a Totally inelastic collision B) this definitely is NOT a...
  41. Physics

    A 10 kg ball moving due west at 2m/sec collides with a 4kg ball that is moving due east at 3 m/sec. You determine that immediately after the collision the 10 kg ball is moving due west at 0.57 m/sec. How do I set up the equations to find the answer?
  42. Science

    Where are memories stored in your brain?
  43. math

    when doing decimoles and multiplying them by whole numbers...for example 4.7805 multiplyed by 1000 dose the decimole go 4places over or 8places over i don't get it please help!!!
  44. Physics

    Thank you so so much And I also posted another physics question down below if you don't mind helping me out?
  45. Physics

    A weight of 50.0 N is hung from the center of a stretched horizontal wire 10.0 meters long. It causes the wire to say 1.00m at its center. What is the force exerted by each half of the wire in supporting the weight?
  46. physics

    an electric sign weighing 200 newtons is supported by two slanting cables. each cable is attached to the same point of the sign and makes a 45 degree angle with the horizontal. what is the component of the force exerted by the sign along each of its cables?
  47. algebra

    The answer should be 14. Substitute "6" for every "x" and solve.
  48. Chemistry

    5,2
  49. Chemistry

    Between which two orbits of the Bohr hydrogen atom must an electron fall to produce light of wavelength 434.2nm?
  50. World History

    From 8000Bc- 600 AD This is talking about the fall of Rome and greece.
  51. World History

    what classical traditions and institutions survived despite the fall of the states? Please I really need help, I have no notes on this.
  52. spanish

    why can't u google it?
  53. World History

    I don't know, mabye it's a typo. Just ignore that word.
  54. World History

    describe the spread of sedentary agriculture outside the older civilized areas
  55. english

    Notes, Feelings, Diary, Storys, Essays, Thoughts, Pictures.
  56. World History

    aryans is an old english language?? and guptas was an ancient Indian empire
  57. World History

    explain the beliefs of Hinduism and its evolution from the aryans to the Guptas. WHO ARE THE ARYANS AND THE GUPTAS? please help :(
  58. math

    1/33 percent of 600?
  59. BIOLOGY

    GOOOGLE. EASY question for google. com
  60. MATH

    divide all the points given by two then graph them and connect the points. (:
  61. math

    tyrell because you must round it up because it is over 749 it rounds up.
  62. World History

    what does it mean by institutions? How do I describe Legalism?
  63. World History

    Describe the teachings and institutions of Confucianism Dadaism and legalism
  64. 6th grade

    With different kind of maps
  65. spanish

    Or google translate!
  66. Repost-- ms. sue.

    Thank you!!!!!!!! I love <3 this site.
  67. Repost-- ms. sue.

    how were the first civilizations similar and different? They all had a social hierarchy, and some sort of government. The main type of ecominic income was agriculture-i think-. That's all I know
  68. physics

    483000 in what units?
  69. physics

    That's wrong Muilitpy 3* 5280
  70. physics

    K cool. first step 3 miles * 5280 ft __________________ 1 ft 1 mile. Now muilitply top times top ( 3 times 5280) and then divide it by the answer at the bottom when u muiltply. (1 times 1)
  71. physics

    Okay first you have to go from miles to ft then to iniches and then to cen? right? So you put what your trying to find on top. I'm not going to do this for you so tell me, how many feet are in a mile?
  72. Random?

    to get different opinions.
  73. MATH

    One quarter is 1/4 or .25 so * .25 * 6= ? Then do the same thing you did for A and there you go (:
  74. MATH

    Make the ft into ins. (12 in. in a foot) and muilitpy length *width *height.
  75. World History

    Oh, okay. They all had a social hierarchy, and some sort of government. The main type of ecominic income was agriculture-i think-.
  76. World History

    thank you, please help me.
  77. World History

    how were the first civilizations similar and different?
  78. World History

    8000 BC-600 CE I don't know
  79. World History

    How did civilized culture survive the rise and fall of regional states?
  80. CHEM

    3, because the 0 don't count, they would count if the number had a decimal point at the end, but it doesn't so 3.
  81. algebra

    3z^8 over 7p^3 multiplied 49p^5 over 9z
  82. An Overview of Teaching Techniques

    12.) is wrong CORECT ANSWER IS C.
  83. An Overview of Teaching Techniques

    12.) is wrong
  84. Chemistry

    A 2.52g sample of a compound containing only carbon, hydrogen, nitrogen, oxygen, and sulfur was burned in excess O to yield 4.36g of CO2 and 0.892g of H20. Another sample of the same compound of mass 4.14g, yielded g of SO3. A third sample, of mass, 5.66g, yielded 2.80 g of ...
  85. economics

    can anyone explain to me how to solve for P, if Q=240-2P?
  86. economics

    HELP!!!!! One and only Inc is a monopolist. The demand function for its product is estimated to be Q=60-0.4P +6Y+2A Y=3,000 P=Price per Unit Y=Per capita disposable personal income (thousands of dollars) A=hundreds of dollars of advertising expenses The Firms average variable ...
  87. 11th grade

    According to Bohr model, what determines the color of light emitted when an electron moved from one energy level to another?
  88. statistics

    Use the random-number table to simulate the outcomes of tossing a quarter 25 times. Assume that the quarter is balanced (i.e., fair). (Start at row 1, and let 0, 1, 2, 3, 4 indicate heads and 5, 6, 7, 8, 9 indicate tails. Enter H for heads and T for tails, and enter your ...
  89. Finance

    You have found the following stock quote for RJW Enterprises, Inc., in the financial pages of today's newspaper. The closing price for this stock that appeared in yesterday's paper was $ (Do not include the dollar sign ($). Round your answer to 2 decimal places. (e.g...
  90. Finance

    Ngata Corp. issued 12-year bonds 2 years ago at a coupon rate of 8.4 percent. The bonds make semiannual payments. If these bonds currently sell for 105 percent of par value, the YTM is ? percent
  91. algebra

    On January 1st a savings account showed a balance of $280. How much interest will be earned by the end of the year at an annual rate of 5 1/4?
  92. economics

    how would a leader of a developing nation, a us citizen whose income is in the top 1%, and a us citizen whose income is in the bottom 5% talk about scarcity and trade-offs?
  93. chemistry

    Im not sure
  94. Physics

    Vterminal=square root of (4mg/pa) p=1.22(density of air) a=22cm=.22m/2=.11m(radius)... (pi)r^2=.038=a 85^2 = 4mg/pa 7225 = 4(m)(9.8)/(1.22)(.038) 7225(.038)(1.220)/(4)(9.8) = m 8.54kg=m
  95. chemistry

    .2M of NaOH(aq)
  96. Chemistry

    thank you! i think the answer is 0.00612 is the delta t
  97. Chemistry

    Calculate the boiling point elevation of a solution made from 15.0 g of a nonelectrolyte solute and 250.0 g of water. the molar mass of the solute is 50.0 g and Kb = 0.51 degrees C/m
  98. chemistry

    200. g of a nonelectrolyte is dissolved in 1.00 kg of water. the boiling point of the solution is then measured to be 101.5 degrees C. What is the molar mass of the compound? The Kb for water is 0.51 degrees Celsius/m
  99. chemistry

    200. g of a nonelectrolyte is dissolved in 1.00 kg of water. the boiling point of the solution is then measured to be 101.5 degrees C. What is the molar mass of the compound? The Kb for water is 0.51 degrees Celsius/m
  100. 5th grade

    8 layers:D
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