Questions Asked on
August 10, 2012

  1. maths

    prove that tan(45+theta)+tan(45-theta)=2sec2theta

    asked by tina
  2. Literature- Urgent!!

    Can anyone help me find a hyperbole in the book the lord of the flies, please? I've been trying to find one for the past two months! And now, school is about to start. The quotation, page number and a brief summary would be appreciated!!

    asked by IB student
  3. math

    A tank contains 50 gallons of a solution composed of 90% water and 10% alcohol. A second solution containing 50% water and 50% alcohol is added to the tank at rate of 4 gallons per minute. As the second solution is being added, the tank is being drained at

    asked by deel
  4. physics

    A passenger on an interplanetary express bus traveling at = 0.95 takes a 9.0-minute catnap, according to her watch.How long does her catnap from the vantage point of a fixed planet last?

    asked by julie
  5. math

    A survey of 180 college men was taken. 43 students were in fraternities, 52 participated in campus sports, and 35 participated in campus tutorial programs. 13 participated in fraternities and sports, 14 in sports and tutorial programs, and 12 in

    asked by keke
  6. algebra

    please help! The following equation can be used to predict the average height of boys anywhere between birth and 15 years old: y = 2.79x +25.64 where x is the age (in years) and y is the height (in inches). a. What does the slope represent in this problem?

    asked by karen
  7. Math


    asked by keke
  8. geomertry

    millie has a garden shaped like a parallelogram that has an area of 81 square feet and a base length of 9 feet. What is the height of the parallelogram?

    asked by janell
  9. math

    Express 3/8 as decimal number

    asked by james
  10. Organic Chemistry

    Suppose a student started with 129 mg of trans-cinnamic acid and 0.50 mL of a 10% (v/v) bromime solution, and after the reaction and workup, ended up with 0.216 g of brominated product. Calculate the student\'s theoretical and percent yields.

    asked by Need Help
  11. Algebra 1

    Use the multiplication property of inequalities to solve the inequality. Graph the solution set -1/9t≥2 The solution set is?

    asked by Tammie
  12. Literature- Urgent 2

    "When the wars over the'll be traveling to mars and back." Thanks Ms. Sue.. but I have no idea what it means?.. Maybe it means that they'll grow up soon and will be experiencing the strange feeling of not being scared abotu the beast anymore.. If anyone

    asked by IB student
  13. Accounting

    Hello I am not angry with you at all, however is there any way possible that you can help me with these two problems and we can call it even? Just let me know I am not trying to get over, however my computer had crashed and I am behind in class I purchased

    asked by Johniece McCoy
  14. Geomerty

    Write the equation of the line with the slope 3/7 passing through the point (9,-2)

    asked by Carly
  15. General

    what do you call someone who now sees life for more than they thought it was before?

    asked by Barbie
  16. Physics

    How long would it take a car engine, say 500 pounds of iron, to cool from 1,200 degrees F (exauhst manifold temp) to air ambient temp. of 75 degrees F.

    asked by David
  17. AED 200

    What are the Characteristics of Constructivism? Is it Teacher- or Student-Centered

    asked by Christin
  18. AED 200

    What are the Characteristics of Behaviorism? Is it Teacher- or Student-Centered

    asked by Christin
  19. chemistry

    How to calculate PH 1.9 =0.0126M I do not still understand. I want you step by step to calculate for me. Thank you.

    asked by Fai
  20. Algebra 2

    When do I use permutation? When do I use combination? Examples please!

    asked by Anonymous
  21. physics

    In a stunt for a movie, a remote controlled car is driven horizontally of the edge of a cliff at a speed of 35m/s. The car hits the ground 85m from the base of the cliff. How high is the cliff?

    asked by Aaron
  22. social studies

    With the vital assistance of _______, Theodore Roosevelt established the first comprehensive national conservation policy

    asked by courtney
  23. math

    What is the value to 2 decimal places of the following integral when a = 24, b = 56, c = 2 and d = 59?

    asked by stan
  24. (math) statistic

    For a particular sample of 63 scores on a psychology exam, the following results were obtained. First quartile = 57 Third quartile = 72 Standard deviation = 9 Range = 52 Mean = 72 Median = 68 Mode = 70 Midrange = 57

    asked by patrena
  25. Fitness And Nutrition

    The best exercise workout to suggest to a client is?

    asked by Anonymous
  26. The basic principle of ore grinding process


    asked by jiandan
  27. The difference between Ball Mill and Raymond Mill


    asked by jiandan
  28. Physics

    Upon a flat only 10 m high (Is that possible?) there are two guns A and B attached together making a vertical angle of 60 degrees when A is flat on roof. They fire at the same time and has the same reloading time. Both guns are capable of giving an initial

    asked by Imalka
  29. math

    a merchant buys 2 quantities of rice at rs.60 and rs.40 per kg respectively.he pays at total of rs.10000. on the other hand he had paid a flat rate of rs.50 per kg. he would have paid 10% more. how many kg of each type of rice did he buy?

    asked by TUHITUHI
  30. Politics/Debate

    are there some important things about domestic infrastructure we should worry or know about? How does demestic infrastructure help us in a positive way and also in a negative way? why would someone negate the substantial increase in development for

    asked by Samantha
  31. physics

    An aircraft is flying at the speed of 354km/hr relative to the air is observed from the ground to have a velocity of 300km/hr in the north east direction. The wind is blowing from east. Find the speed of the wind and the direction to which the aircraft is

    asked by george
  32. math

    Point A and B of a triangle ABC are at (-1,1) and (3,9), respectively; while point C is on the parabola y=x2. Find coordinate of C so that the area of ABC is minimum, and calculate the largest are of ABC.

    asked by rolan
  33. math

    An 8 ft wall stands 27 ft from a building. Find the length of the shortest straight beam that will reach to the side of the building from the ground outside the wall.

    asked by rolan
  34. Child Development

    Rooting is an example of a/an:

    asked by Sandra
  35. Biochemistry

    0.1M OF NaOH in 5ml is mixed with 0.1M of CH3COOH in 45ml, what is the concentration of CH3COO- in equilibrium mixture?

    asked by Tulela Haimbodi


    asked by LYKEITHIA
  37. Calculus

    Use mathematical induction to prove that the statement holds for all positive integers. Also, label the basis, hypothesis, and induction step. 1 + 5 + 9 + … + (4n -3)= n(2n-1)

    asked by Timofey
  38. math

    bhagat has rs.150 in his piggy bank and plans to add rs.2 each week.Laxmi has rs.200 in her piggy bank and plans to add rs.6 each week.After how many weeks will laxmi have twice as much money as bhagat?

    asked by TUHITUHI
  39. math


    asked by ibranian
  40. Probality

    Dealing a card from a standard deck, the noted outcome is the denomination and suit. Let Q denote the event that the card is a queen and H the event that the card is a heart.Awhat is the union of Q and H? What is the conditional probability of Pr(H/Q)?

    asked by Katlego
  41. Algebra 1

    Find the area of a circle with a radius=19yd Use π≈ 3.14

    asked by Tammie
  42. Physical Sciences

    I have a project practical investigation to do and I have no idea how to go about with it. The problem is: Calculate the mass of sodium hydroxide used to prepare a 0,5M NaOH solution in a 250ml volumetric flask. Determine the concentration of the acetic

    asked by Cindy
  43. Math

    Find the value of c to make the following augmented matrix corresponding to a consistent syste, | 1 -4 7 4 | | 0 3 -5 5 | | -2 5 -9 c |

    asked by Anonymous
  44. Math

    Consider the following 2x2 system of linear equations, x + y = 3 x + (a^2 - 8)y = a If the system have a unique solution, then a takes any value except a=-3 and what?

    asked by Anonymous
  45. Math

    The system 3x + ay = 0 (a-2)x + 5y = 0 has infinitely many solutions. What is the smallest possible value of a? Thanks!

    asked by Vonne
  46. Science Biology


    asked by Pamela
  47. business 101

    an index fund is amutual fund that

    asked by Anonymous
  48. science


    asked by Caitlin
  49. advanced algebra 2


    asked by kerry
  50. math


    asked by Brandi

    evalaute the expression Given 3x2 + 2x – y, evaluate when x = -5 and y = 7

    asked by Anonymous
  52. writing sentences and paragrahs


    asked by babs
  53. math

    Water is being pumped into an inverted right circular conical tank at the rate 30 ft^3/min. the tank, which stands vertex down and base up, has a height of 12 ft and a base diameter of 16 ft. how fast is the water level rising when the water is 9 ft deep?

    asked by rolan
  54. law/421

    What is the difference between a material breach of contract and a nonmaterial breach of contract

    asked by amt
  55. Physics

    A 750 kg car traveling 22.0 m/s due north crashes into a 1500 kg truck traveling 20 m/s due west. The two vehicles become locked together and travel 19.0 m before stopping. Find the average frictional force (magnitude and direction) that brings the two to

    asked by Chad
  56. advanced algebra 2

    Find an equation for the line with the given properties: 1) Containing the points (1, 3) and (-1, 2) 2) Slope = -2/3; containing the point (1, -1) 3) X-intercept = 2; y-intercept = -1 4) Parallel to the line 2x – y = -2; containing the point (-1, 2) 5)

    asked by kerry
  57. Chemisty

    Please help...I know I'm missing something here if 50.0mL of AgNO3 reacts with 25.0mL of 0.100M of K2CrO4, what is the molarity of silver nitrate?

    asked by Sheri
  58. Calculus

    Evaluate the following definite integral: integral at a = -1, b=2 -4dx/(9x^2+30x+25) Would I have to separate them in 3 terms as: -4 ∫1/9x^2 + ∫1/30x + ∫1/25 resulting in: -4/(3x^3)+ (15x^2)+ C? and from there I can replace a and b f(a) - f(b)? Thank

    asked by Paul
  59. law/421

    What are some examples of legal and equitable remedies available for breach of contracts

    asked by at

    List the conditions when the sum of a positive number and several negative numbers will be positive. Include an example that represents your answer.

    asked by LOGAN
  61. Math

    What is the maximum number of nonoverlapping squares with sides of length 3 that will fit inside of a square with sides of length 6?

    asked by Christina
  62. physics

    An orbiting spacecraft is described not as a "zero-g" but rather as a "microgravity" environment for its occupants and for onboard experiments. Astronauts experience slight lurches due to the motions of equipment and other astronauts and due to venting of

    asked by Ben

    16xy2 – 23xy2 + 7xy2 Simplify by combinng like terms

    asked by Anonymous
  64. Physics


    asked by Chad
  65. Physics

    A low friction cart of mass m, traveling at speed v, collides (perfectly) elastically with a cart of triple the mass, initially at rest. What is the result of this collision? (What are the final, after-collision velocities?) Do NOT use the derived

    asked by Chad
  66. Physics

    Two identical masses are connected by a (massless, stretchless) string across a (massless, frictionless) pulley. The mass on the right is held so that the string connected to it is horizontal. Everything is initially at rest; the tension is the string is

    asked by Chad
  67. Math

    A fraction of a square mile is a field that is a 1/2 mile long and 1/4 mile wide. What is the fraction?

    asked by Joe
  68. Math

    If the universal set U is defined by U = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10} and A = {1, 2, 3, 4 } B = {3, 4, 5, 6, 7} What is n(A ∩ B) ?

    asked by keke
  69. math- adding and subracting intergers

    what is the value of -27 - 8? a. -35 b. -19 c. 19 d. 35 what the solution 40 + (-11)? a. -51 b. -29 c. 29 d. 51 what the value of -31 + 30? a. -61 b. -1 c. 1 d. 61 Can u check my answers? here they are: 1.c 2.d 3.1 if they r wrong plz tell me the right

    asked by yoda
  70. math

    what is the solution to 40 + (-11)? a. -51 b. -29 c. 29 d. 51 what is the value of -31 + 30? a. -61 b. -1 c. 1 d. 61 plz help!

    asked by Anonymous
  71. algerbra

    can you help me check my answer. not sure of the answer. what is value of -27 - 8? a. -35 b. -19 c. 19 d. 19

    asked by dudley
  72. English

    I am writing a paragraph about why I want to participate in this school counsil thing and I was wobderi if the word choice for "deticate" in this sentence makes sense: I want to deticate myself to participate in more school activities.

    asked by Kelly
  73. finance

    Firm A has $10,000 in assets entirely financed with equity. Firm B also has $10,000 in assets, but these assets are financed by $5,000 in debt (with a 15 percent rate of interest) and $5,000 in equity. Both firms sell 10,000 units of output at $2.50 per

    asked by cc
  74. advanced algebra 2

    Factor the expressions: x^2 - 13x + 30

    asked by kerry
  75. grammar

    Please turn of lights when you go to sleep.

    asked by adriana
  76. math

    Solve the linear inequality x/7 +3x/14 ≤ 4/7 The solution set is?

    asked by Austin