# Questions Asked onJuly 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?

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)