Posts by helper

Total # Posts: 1,917

  1. physics

    13.1 kg * m/s
  2. Math help :(

    Elzbieta Bosak is wrong. Use this especially if you're using connexus. - B - A - D - D - C
  3. statistic

    3.80127(1.03605)^x
  4. Science help,please...

    Thanks Mr.? ! 100%
  5. Science help (just 4 questions)

    Avery is 100% correct. :)
  6. 2 more History Questions

    Unknown, the correct answer is 1. D and 2. A
  7. S.S. help plz

    "Luxi_pux" is wrong! Smart one and Yuno are correct.
  8. S.S. help plz

    For the quiz in unit 4 the correct answers are b a d b a d c c a a 100%
  9. assistent teacher

    I would say Powerpoint, Openoffices, and some other softwares just type in " Keynote " and download if you have a Mac. Also try Google Docs Presentation. And Sliderocket ( you can also add pics with it! ) Try 280 Slides or Prezi!
  10. Writing skills 1

    5. C. Of course this is the right answer!!
  11. Writing skills 1

    1. D. In formal English, we use words to say precisely what we mean. 3. D. Lawson crept silently up the stairs, but couldn't still his heartbeat. 4. D. Dear Sir 6. C. adjective 7. B. Finally 8. B. Psychological Effects of Nuclear Weapons 10. D. I am in receipt of your ...
  12. Math Ms. Sue please

    Unit 3 Lesson 13 Functions Unit Test Math Grade 8 B Answers: 1. D 2. A 3. D 4. A 5. D 6. D 7. D 8. C 9. A 10. A 11. C 12. B 13. B 14. A 15. A 16. B
  13. Soc. Studies

    ITS C
  14. Quantum Physics

    for 4 some one already gave you so you have: 4a: 1/sqrt(5) 4b 2/5 4c 1/2 4d 0
  15. 7th Grade Social Studies

    10 is wrong... it is C
  16. 7th Grade Social Studies

    The primary problem with urban sprawl in the west is the depletion of water resources. If this problem isn't solved, aquifers will dry up, farms will experience drought, water won't be available for irrigation. Another problem with urban sprawl is air pollution mixed ...
  17. Quantum Physics

    1/sqrt(2) -1/sqrt(2) 1/sqrt(2) 1/sqrt(2)
  18. Physics

    0.5, 0, 0, 0.5, 0, 0.5, 0.5, 0
  19. physics

    0.5, 0, 0, 0.5, 0, 0.5, 0.5, 0
  20. PHYSICS!!!

    0.0887 is the answer....correct on and say thanks.....
  21. Physics

    I X
  22. Physics

    7/9
  23. Quantum Physics

    I X
  24. Quantum Physics

    7/9
  25. Physics

    Impulse is equal to Force*Time, so this is just 60*2=120 N*s
  26. english

    b c a c
  27. Languege arts

    A B B C B A C A FALSE
  28. math

    a. early- .1 on time- .6 late- .18 cancelled- .12 b. mutually exclusive c. .7
  29. chemistryy

    5.043661*10^15
  30. Chemistry

    18
  31. chemistry

    4.7E-15
  32. Chemistry

    could you explain me this one A photon interacts with a ground state electron in a hydrogen atom and is absorbed... And I will explain you the formula
  33. MATH

    This is especially for students of CPA (Connexus). 1. What are the actual dimensions of the sofa in inches? - 90 x 45 2. Fort Wayne to Richmond to New Albany measures 6 cm on the map. What is the actual distance? - 300km 3. There are 1,296 in.2 in one square yard. Use a ...
  34. math

    Well.. People have so stop arguing for one, because this girl needs help with the problem right? Please guys..
  35. 7th grade math Ms. Sue please

    Somebody is right renina is wrong I got a 50%
  36. PreCalculus - Find Inverse

    replace f(x) with x and x^3 with y^3 in the equation and then solve for y ... Hope that helps !!
  37. physics help needed very urgent !!!

    The block in the figure below lies on a horizontal frictionless surface and is attached to the free end of the spring, with a spring constant of 55 N/m. Initially, the spring is at its relaxed length and the block is stationary at position x = 0. Then an applied force with a ...
  38. math

    704-12,132= -11,428
  39. Science

    You have a stock solution of 3.5M glucose. You need a working solution of 0.5M glucose in a volume of 400ml. Explain how you make the solution. Also what is the concentration of the dilution solution?
  40. S.S

    Thanks Shawn Mendes is bae! lol
  41. English

    Lacey was right!(:
  42. child development

    3 is A 5 is C 9 is A 10 is B 11 is C Those are right because I did this test already. :) The ones I didn't mention already have the right answer.
  43. physics

    the output will decrease
  44. math

    I dunno, but maybe u can help me!
  45. Science

    You are correct,the answer is B. Good job :)
  46. trig

    58!! I'm workin on it too! LOL! See you in class!
  47. Proof read please

    You have to get involved!� From the first day of school, freshman year of high school, those were the words that constantly fell from my mom�s mouth. I would not go a week without hearing those five words. At that time I did not ...
  48. Physics

    it is based off the equation: displacement = (initial velocity)*(change in time) + 1/2(acceleration)*(change in time squared) since that equation is linear, the equation recommended for this problem is: "angle" = 0 + 1/2(acceleration)*(change in time squared) that is...
  49. algebra

    Say, cost per day = D Say, cost per km = k 3D + 150k = 180 2D + 400k = 180 Multiply the first equation by 2 and the second by 3: 6D + 300k = 360 6D + 1200k = 540 Subtract the first equation from the second: 900k = 180 Divide both sides by 900: k = 0.2 2D + 400k = 180 2D + 400(...
  50. Algebra

    There are no like terms. It cannot be simplified.
  51. algebra

    Say Aarons age = 2A years Therefore, Half of Aarons age = A years Therefore, Tanya's age = A+10 2A + A+10 = 55 3A + 10 = 55 3A + 10 -10 = 55 - 10 3A = 45 A = 15. Therefore, Tanya is 15 + 10 = 25 years old. (Aaron is 2 x 15 = 30 years old)
  52. arithmetic

    ANSWER: 65 Substitute 30 into n: 7 + (30 - 1) x 2 7 + (29) x 2 7 + 58 = 65
  53. Maths C

    To solution is in the idea that Simpson's rule requires an even number of intervals and uses parabola capped trapezoids created by three points. Weddle's rule works accurately for more than 7 and odd numbers of intervals. Good luck in indentifying the derivation of the...
  54. english

    He had planned to take the last flight out to Chicago. However, the flight was cancelled due to bad weather.
  55. american history

    There are no statements listed :)
  56. life orientation

    Can you please post lines 10-15 or the passage you are implying to :)
  57. Title for essay

    I agree with Ms.Sue second title!
  58. math

    there are 3 ft in 1yd. 555ft/3ft=X yd/1yd 555ft=3xft divide =185 yards
  59. geometry

    Surface area of what? Cylinder, cone, sphere or ?
  60. Cultural Diversity

    YOU are not a nice person. Ms. Sue is very helpful and one of the nicest tutors here. I hope that the administrator of this site blocks you from ever posting here again.
  61. Social Studies

    See link. http://en.wikipedia.org/wiki/Albany_Plan
  62. geometry

    Your question, I assume, is to find the length and width of the rectangle? The diagonal creates 2 right triangles. L = length L - 4 = width By the Pythagorean theorem, d^2 = L^2 + (L - 4)^2 20^2 = L^2 + (L - 4)^2 Solve for L, the length width = L - 4
  63. algebra 1

    Try this link. http://www.algebra-class.com/dividing-monomials.html
  64. Logarithms

    Now, I feel stupid. I guess I should not work so late at night. I tried all these rules when all I needed to do was simplify log2√2 using the basic definition/relationship !! Thanks again. I don't remember learning logs some 40 years ago in HS and teaching myself. ...
  65. Logarithms

    Thanks so much Reiny.
  66. Logarithms

    I'm working on logarithmic equations and I'm stuck on how my book arrives at the next step. First, they use the change of base formula on, log(sqrt(2))(x^3 - 2) (sqrt(2)) is the base,changing to base 2 log(sqrt(2))(x^3 - 2)= log2(x^3 - 2)/(log2(sqrt(2)) I understand ...
  67. Math 126

    Arithmetic, the common difference is 11. 15 - 4 = 11 26 - 15 = 11 37 - 26 = 11 48 - 37 = 11 59 - 48 = 11
  68. algebra

    How can we answer without looking at the four choices of graphs? See the following in regards to graphing quadratic functions. http://www.purplemath.com/modules/grphquad2.htm
  69. word problem

    If this is your equation, M = −0.001t^3 + 0.1t^2 t = 14 min Substitute 14 for t and solve M = −0.001t^3 + 0.1t^2 M = −0.001(14)^3 + 0.1(14)^2 Now solve for M = number of words in 14 min
  70. Math

    This assumes that sides PQ and ST are corresponding sides. You do not state the relation of the sides in your problem. Create a proportion matching the corresponding sides and perimeters. PQ/ST = Perimeter PQR/Perimeter STU 18/6 = 78/x 18x = 468 x = 26 = Perimeter STU
  71. math

    Multiply the area of the rectangle by the square of the scale factor to get the area of reduced rectangle. Reduced area = 720 * (1/6)^2 Reduced area = 720 * (1/36) Reduced area = 720/6 Reduced area = ? sq in.
  72. math

    Master is incorrect f(x) = 7 ln x f' = 7/x f'(4) = 7/4
  73. coordinate geometry

    y - 18x + 18 = 4 Slope-intercept form of the equation is, y = mx + b m is the slope b is the y-intercept You need to put tour equation in the slope-intercept form by solving for y. Move everything to the right side of the equal sign. y - 18x + 18 = 4 y = 4 + 18x - 18 y = 18x...
  74. geometry

    Not sure I understand your question but I'll give it a try. AB = 4, 2 AB = 2 * 4 = 8 CD = 7 EF = 1 2AB - 1CD = EF 8 - 7 = 1
  75. Algebra 2 word problem

    Correct :)
  76. math

    You're welcome :), we all make mistakes.
  77. math

    Miss Sue, I think you missed the "0" before 45 (0.045 not 0.45) 0.045 = 45/1000 = 9/200 = 0.045 So, the fraction is, 45/1000 = 9/200 (reduced to lowest terms) 0.045 * 100 = 4.5% So, the percent is, 4.5%
  78. Measurment

    Are 22, 16, and 28 the sides of this triangle? What is "a nine in the middle" mean? What does this "9" represent? Your question cannot be answered as worded. What exactly does your problem say or state to do?
  79. denominators

    You need to use parenthesis. If this is your problem v/(v+5)+v/3 = -4/(v+5) Multiply both sides by 3(v+5) 3v + v(v + 5) = -12 3v + v^2 + 5v = 12 v^2 + 8v + 12 = 0 (v + 2)(v + 6) v = -6 or v = -2 Make sure you check the solutions in the original equation. I have NOT checked the...
  80. Math

    W = width W + 42 = length P = 2W + 2L 228 = 2(W) + 2(W + 42) Solve for W W + 42 = Length
  81. Math

    x = hrs farming y = hrs babysitting 10x + 5y >= 150 x + y <= 25 Solve the system
  82. algebra

    Parallel lines have equal slopes. Equations in the form y = mx + b m = slope, b = y-intercept Your equation, y = 1/2 x + 2.3 Do you know the slope now?
  83. math

    Circumference, C = 2 pi r or, C = pi d C = 2 pi r C = 2(3.24)(100) C = 628 feet for one lap 5280 * 2 miles = 10,560 feet 10560/628 = ? = laps in 2 mile
  84. Math

    tan -120 = (sqrt(3)) = 1.73205 coterminal with 240 deg in QIII so positive reference angle is 60 Where did you get - 0.71312301 Are you using a cal. set to the wrong setting, rads vs degrees?
  85. Geometry-Please check my answers

    Both your answers are correct.
  86. Algebra 2

    3x^2 + 1 + (-3x)/(x^2 - 3) Yes, your answer is correct, but I was taught that the remainder is expressed as, (-3x)/(x^2 - 3)
  87. Geometry-Please check

    http://www.jiskha.com/display.cgi?id=1299028007
  88. calculus

    Ignore my response. I completely misunderstood the question.(:
  89. calculus

    I think I read the question wrong. I thought the question wanted the slope of the tangent of f(x) at (1,-5) and the two equations at this point.
  90. calculus

    y = x^2 - 2 f' = 2x P(1,-5) f' = slope m = 2(1) = 2 Equation of the line tangent at P(1,-5) m = 2 y = mx + b -5 = 2(1) + b -5 = 2 + b b = -7 Equation of the tangent line is, y = 2x - 7 2x - y = 7 Equation of the normal line at P(1,-5) (The normal line is the line that ...
  91. accounting

    Post your question, but I've noticed that there are not many experts here for accounting questions (depending on the specific question). Depending, I might be able to help, depending on how involved and the specific area involved. Someone might be able to point you in the ...
  92. Algebra 2

    You have to do polynomial long division. I can't layout the problem here because of the alignment of columns and such. See this website. It explains in detail how to do this. I'll check your answer if you post it. Good luck :) http://www.purplemath.com/modules/polydiv2...
  93. geometry

    See this post. Only the side length is different. Same method is used. http://www.jiskha.com/display.cgi?id=1298927532
  94. Algebra 2

    You need parenthesis. I'll assume your problem is, x/(x+1) + 5/x = 1/(x^2 + x) x/(x+1) + 5/x = 1/(x(x + 1)) Multiply both sides by x(x + 1) x^2 + 5(x + 1) = 1 x^2 + 5x + 5 = 1 x^2 + 5x + 4 = 0 (x + 1)(x + 4) = 0 x = -1 or x = -4 Make sure you check both answers in the ...
  95. calculus

    | = integration symbol | u dv = uv - | v du | arctan(4t) dt u = arctan(4t) du = 4/(16t^2 + 1) dt dv = dt v = t It should look like this, = t arctan(4t) - | 4t/(16t^2 + 1) dt After you set that up, substitute w = 16t^2 + 1 dw = 32t dt 1/32 dw = t dt Then, the integration should...
  96. math algebra1

    x = Janet's distance to office 2x - 1 = Lynn's distance to office x + 2x - 1 = 8 3x = 9 x = 3 x = 3 mi from Janet's house to office 2x - 1 = 5 miles Lynn's house to office
  97. Algebra 1

    You're welcome :)
  98. Algebra 1

    y = height = -16t^2 + 63t + 4 The vertex of this parabola is called the maximum point. Vertex = -b/2a Vertex = -63/(2(-16)) Vertex = t value = 1.96875 So, the maximum value for t seconds is 1.96875 y = height = -16t^2 + 63t + 4 t = 1.96875 y = -16(1.96875)^2 + 63(1.96875) + 4 ...
  99. math

    Assuming he spent all his money, x = Money he started with 1/3 x = spent on hat 1/6 x = spent on socks 12 = spent on a tie Total spent = 1/3 x + 1/6 x + 12 Total spent = 2/6 x + 1/6 x + 12 Total spent = 3/6 x + 12 Money he started with - Total spent = 0 x - (3/6 x + 12) = 0 6/...
  100. Math 10+

    Or, do you mean 2^(-3) = 1/(2)^3 = 1/8
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