Questions Asked on
July 27, 2012

  1. math

    What is the probability that a randomly selected three-digit number has the property that one digit is equal to the product of the other two? Express your answer as a common fraction.

  2. math

    The diagonal of a rectangular room is 52 ft long. one wall measures 28 ft longer than the adjacent wall. Find the dimensions of the room.

  3. algebra

    a function is defined by the equation y=8x-3. If the domain is 2≤x≤4, find the minimum value in the range of the function.

  4. Physics

    When uranium 92U235 decays, it emits a ray. If the emitted ray has a wavelength of 1.30 x 10-11 m, determine the energy (in MeV) of the ray

  5. geometry

    In a triangle ABC,right angled at B, BD is drawn perpendicular to AC. prove that: (i) angle ABD = angle c (ii) angle CBD = angle A

  6. Math- STATS 218

    When the following hypotheses are being tested at a level of significance of aH0: m 100 Ha: m < 100 the null hypothesis will be rejected if the test statistic Z is a. >Z b. >Z c.

  7. math

    In a triangle ABC,right angled at B, BD is drawn perpendicular to AC. prove that: (i) angle ABD = angle c (ii) angle CBD = angle A

  8. math

    Richard is standing between two buildings in a town house development.The building on the left is 9 m away and the angle of elevation to its security spotlight A is 68 degrees. The building on the right is 6m away and the angle of elevation to its security

  9. Math

    The length of a rectangle is 2 more than twice its width. If the area of the rectangle is 24 sq. m., find its dimensions.

  10. Math

    A square painting is surrounded by a 3-cm-wide frame. If the total area of the painting plus the frame is 81 cm2, find the dimensions of the painting.

  11. math

    In a triangle ABC , the internal bisectors of angles B and C meet at P and the external bisectors of the angles B and C meet at Q. prove that: angle BPC + angle BQC = 2 rt. angles.

  12. to ms.sue- writing project

    what i wrote: every monday, my aunt would come and visit me.everytime my aunt visits me, she would always have something special for me. This monday was different.when my aunt came to visit me today, she was holding a huge box. I heard strange noises

  13. accounting

    Assume that a company purchases land for $100,000, paying $20,000 cash and borrowing the remainder with a long-term note payable. How should this transaction be reported on a statement of cash flows

  14. algebra

    Find the product: (8x-3y)^2

  15. Chemistry

    Calculate the solubility of ZnCO3 in .050 M Zn(NO3)2. Ksp= 3.0*10^-8 solubility= 1.7*10^-4

  16. statistics

    A rental agent claims that the mean monthly rent, u , for apartments on the east side of town is less than $675. A random sample of 21 monthly rents for apartments on the east side has a mean of $674, with a standard deviation of $18. If we assume that the

  17. algebra

    Hannah invests $3850 dollars at an annual rate of 6% compounded continuously, according to the formula A=Pe^rt, where A is the amount, P is the principal, e=2.718, r is the rate of interest, and t is the time, in years. (a) Determine, to the nearest dollar

  18. Finance

    During a job interview, Pam Thomson is offered a salary of $28,000. The Company gives annual raises of 6 percent. What would be Pam's salary during her fifth year on the job?

  19. Mathsw

    A man 6 feet tall is standing 9 feet from a 18 feet tall light pole. His shadow cast 15 degree. What is the angle formed from this equation?

  20. AP Chemistry

    If you were to draw diagrams (such as that shown on the right) representing aqueous solutions of each of the following ionic compounds, how many anions would you show if the diagram contained six cations? (a) NiSO4, (b) Ca(NO3)2, (c) Na3PO4, (d) Al2(SO4)3

  21. math

    Round all answers to the nearest hundredth square root of b^2-4ac;b=3,a=-1,c=-2?

  22. Math

    I don't understand how u can get 3454 from mutiplying 1,100(3.14) When i did it i got 1414 The question: is 2(3.14r2 + 2(3.14)rh 2(3.14)(10)2 + 2(3.14)(10)(45) and when i got done with the promblem the answer in book said approximately 3454in2 when i got

  23. Math

    There are 6 pairs of black socks and 6 pairs of white socksWhat is the probability to pick a pair of black or white socks when 2 socks are selected randomly in darkness?M

  24. College Algebra

    Graph the following function using transformations. Be sure to graph all of the stages on one graph. State the domain and range. y = -SQRT x - 6. My instructor is saying that I have to do more than one graph. Can anybody help me I am lost!

  25. design

    1. A person with a square face shape and a rectangle body shape has what bodyline? A. Straight B. Sharp-straight.(yes) C. Soft-straight D. Soft-straight II 2. A suit with rounded lapels and a shawl collar would work best for a woman with a _______

  26. Physics

    Diffraction grating #1 has half the lines/cm that diffraction grating #2 does. When used with a certain wavelength of light, both gratings give first order maxima. Which of the following statements is true for the same wavelength of light.

  27. math

    A fair, six-sided die is rolled eight times, to form an eight-digit number. What is the probability that the resulting number is a multiple of 8? Express your answer as a common fraction.

  28. algebra

    Find the product (x+5)(5x+25)

  29. algbra

    Find the product: (8x-3y)^2

  30. Algebra

    Find the product: (5^2-3y)(5x^2+3y)

  31. Physics

    A)What is the equation for equivalent resistance for resistors wired in series? What about series wiring makes resistors in series add the way they do? B)What is the equation for capacitors wired in parallel? What about parallel wiring makes capacitors add

  32. Algebra

    Find product: (5x^2-3y)(5x^23y)

  33. Algebra

    Essay: Show all work. A gardner wants to create wants to create a triangle garden in the shape of a right triangle with skortesr length x-5yft. and the middle length side x+6yft. what is an algebraic expression for the area of the garden? Be sure to

  34. algebra

    Essay: Show all work. Find the following product. (x^2+7)(x^3-x7)

  35. math

    250 is number of sales, which is down 12% of the previous year. What is last year's total?

  36. Algebra

    Essay: Show all work. A school designer wants to create a white board with the ptimal dimensions to enhance if one side of the white board x^-5xy+8y inches. Write an algebra expression for the area of the area of the area of such a white board, simplify

  37. geometry

    In a triangle ABC , the internal bisectors of angles B and C meet at P and the external bisectors of the angles B and C meet at Q. prove that: angle BPC + angle BQC = 2 rt. angles.

  38. math

    the mean of a list of seven numbers is 45. if i add two numbers to this list the mean of he list becomes 37 what is the mean of the two numbers that i added to the list

  39. algebra

    a function is defined by the equation y=8x-3. If the domain is 2≤x≤4, find the minimum value in the range of the function.

  40. Algebra

    The kinetic energy(K) of an object is dependent on its mass(m) and velocity(v) and is given by the equation K=.5mv^2. If an object has a velocity of 5 and a kinetic energy of 75, what is its mass?

  41. algebra

    1.if f(x)=8^x, find the value of f(2/3) 2. If 8^2x=2^(x+5), what is the value of x?

  42. Microeconomics

    Assume that the marginal utilities for the first three units of a good consumed are 200, 150, and 125 respectively. What is the total utility for the first unit?

  43. philosophy

    i have to write an essay comparing Continental, Pragmatic, and Analytic philosophies, focusing on one particular concept that is treated differently by all three schools of thought. what three schools are they talk in about?

  44. relative frequency

    help with relative frequency

  45. physics

    if a brick of mass 7 kg is thrown from a height of 24 ft at an angle of 45 degrees, what impact force will it land with on the ground? what will be the impact of the force on the brick if it lands on. a) concrete b) soft surface

  46. Math

    Stalls in a particular market occupy a 3 m by 2m spaces. The stall owners requested that the area of their stalls be doubled. The market owner granted this request by increasing the length and the width equally. What are the new dimensions of the stalls?

  47. child day care

    the facility

  48. algebra

    Please Answer the following: What do you call the Situation when the Rubber man Runs into the Bearded lady? What did Mergatroid get for losing 20 pounds?

  49. biology

    what is anterior tibial translation?

  50. physics

    A 1.50 kg mass attached to a spring oscillates with a period of 0.365 s and an amplitude of 15.5 cm. (a) Find the total mechanical energy of the system

  51. English 002

    Tell us why it is important to use good grammar, proper punctuation and clear senteces when you need to le someone know are displeased.

  52. Math

    Consider the weighted voting system [75: 31, 29, 23, 16, 8, 7]. Find each: a. The total number of players b. The total number of votes c. The weight of P3 d. The minimum percentage of the votes needed to pass a motion 9rounded to the next whole percent)

  53. science

    How many outlets can you place on one curcuit in your house

  54. physics

    two equal masses of 5kg are placed on two vertex of an an equilateral triangle and 20 kg mass on the third.each side is 20 cm long. find the force acting on 1 kg mass kept at the centroid of the triangle.

  55. math

    find the quantities specified ð ~3.14 find the area of a triangle with a base of 12 meters and an altitude of 14 meters

  56. math

    Round all answers to the nearest hundredth -5a^2;a=-2?

  57. Trigonometry

    what is the frequency of y=tan(Pi/3 x)?

  58. Trigonometry

    How many solutions does the system {y=x, y=tanx have?

  59. Trigonometry

    what is the amplitude of y=1/5sin(sqr root5x + 1/sqrroot5)?

  60. physics

    In the circuit below, at time t = 0, the switch is closed, causing the capacitors to charge. The voltage across the battery is 12 V The circuit: flickr. com/photos/ 68751220@N03 /6848519773/ A)Calculate the time constant for the RC circuit B)Calculate the

  61. to ms.sue-writing project

    please check: Narrative Prompts (choose only one) • Your aunt arrives with a huge box. You hear strange noises coming from the box. Write a story about what’s inside. what i wrote: every monday, my aunt would come and visit me.everytime my aunt visits

  62. english

    he the attention of a mathematician {frame a wh-type question to get the underlined part as answer}

  63. law/421

    What are some examples of arbitration that can occur in your professional and personal life?

  64. math

    2sec(11)sec(19)-2cot(71)

  65. English

    can you please identify the nouns and verbs in this sentence. Don't be impressed with your own wisdom. Instead, fear the Loard and turn byour back on evil.

  66. Chem 2

    Using the reaction HB H+ + B- and the Ka for that expression, calculate the Ka given the initial concentration of weak acid to be 0.150 M and the pH of the solution to be 2.79.

  67. chem

    If I am placing intermolecular Forces in order by boiling point. weakest to strongest C3H8 CH4 LiF HBr I'm not sure about the last two, is this in right order?

  68. chem

    using gas laws using P1,V1,T1,P2,V2,T2 soling for P2 P1,V1/T1 =P2,V2/T2 Divide by V2 =T2/V2 (P1)(V1)(T2)/(T1)(V2)=P2 If I'm solving for P2, is this the right set up? Thanks

  69. chem

    I am not sure how to even set this question up. I need to find out how many moles of C2 gas is contained in a 2.0L container that has a pressure of 125 atmoshpers and a temp of 10 C. I have P1-125 Atom V1-2.0L T1-10 C + 273 = 283K N1 ? I'm not sure where

  70. chem

    labeling form highest to lowest IMF and why HBr, LiF,CH4 HBr- Dipole, covalent LiF-Dipoole, Ionic CH4, Hydrogen bonding, -4 Is this right?

  71. algebra

    $400 invested at 3% compounded daily after a period of 3 years=$?(round to nearest cent)

  72. math

    if my cross is 3 3/8 inches tall and 2 1/2 inches wide how wide should it be if its 7 1/2 inches tall

  73. Math

    I don't understand how u can get 3454 from mutiplying 1,100(3.14)

  74. chemistry

    Determine the activity of 1.11 g of 88Ra226 (a) in disintegrations per second (Bq) (b) and in Curies (Ci). The half-life is 1600 yr (1 yr = 3.156 x 10^7 s). 1 Ci is equal to 3.7 x 10^10 Bq.

  75. Physics

    How many half-lives are required for the number of radioactive nuclei to decrease to 1/10^4 of the initial number?

  76. Chemistry

    What volume (in liters) is occupied by 3.85×10^22 nitrogen molecules at 105 C and 255 mmHg?

  77. Physics

    When any radioactive dating method is used, experimental error in the measurement of the sample's activity leads to error in the estimated age. In an application of the radiocarbon dating technique to certain fossils, an activity of 0.15 Bq per gram of

  78. 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

  79. math

    does anyone know the formula for finding the base of a square based pyramid when u have the volume and height ?

  80. Algebra

    Find the product -7y^2(y^4-5y^3+8y^2-6y+5)

  81. Chem

    What volume (L) of a 3M KOH solution can be prepared by diluting 0.5 L of a 5M KOH solution?

  82. algebra

    Find the product (x+5)(x^2-5x+25)