# Questions Asked onAugust 10, 2012

1. ## maths

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

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!!

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

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?

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

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?

7. ## 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

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?

9. ## math

Express 3/8 as decimal number

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.

11. ## Algebra 1

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

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

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

14. ## Geomerty

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

15. ## General

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

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.

17. ## AED 200

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

18. ## AED 200

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

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.

20. ## Algebra 2

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

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?

22. ## social studies

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

23. ## math

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

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

25. ## Fitness And Nutrition

The best exercise workout to suggest to a client is?

26. ## The basic principle of ore grinding process

Lifting height and motion trail of projectile action of ore grinding medium depend on rotating speed of grinding machine and the filled amount of ore grinding medium. Both the low speed and high speed will have direct influence on the performance of

27. ## The difference between Ball Mill and Raymond Mill

Ball Mill materials is being broken, further crush the key equipment. Mill widely used in cement, Portland products, new building materials, refractories, fertilizers, as well as black and non-ferrous metal processing industries such as the production of

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

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?

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

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

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.

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.

34. ## Child Development

Rooting is an example of a/an:

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?

36. ## ICD 9 CM CODING

CERVICITIS TUBERCULOUS HOW DO I CODE THIS

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)

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?

39. ## math

Donald wants to build an aquarium with internal volume of 1 m^3 that made of flat glass sheet. The bottom and side walls of the aquarium have to be made of 7 and 5 mm-thick glass sheet, respectively. Current price of 5 mm and 7 mm galss sheet are \$3.5 and

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)?

41. ## Algebra 1

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

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

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 |

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?

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!

46. ## Science Biology

What happens when TCDD binds to the AhR receptor? How does it cause diseases/health problems in people?

an index fund is amutual fund that

48. ## science

A soccer ball is kicked with an initial speed of 8.4 m/s in a direction 22.0° above the horizontal.Find the magnitude and direction of its velocity at the following times. (Take the +x axis to be parallel to the ground, in the direction that the ball is

Factor these expressions: 3x^2 + 8x + 4 2x^2 - 7x + 6 5x - 2x^2 - 3

50. ## math

I'm working on some review problems in Math and having trouble on the critical thinking one. The question says is it possible for 2 numbers to have the same LCM and GCF? Explain. I'm not sure where to begin on this. I know how to do both types of problems

51. ## ALGEBRA

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

52. ## writing sentences and paragrahs

Background You’ve applied for a specific job in your field of study. The Human Resources Department arranges an interview and tells you to bring with you a polished piece of writing for them to evaluate your writing skills. The paragraph must describe

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?

54. ## law/421

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

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

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)

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?

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

59. ## law/421

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

60. ## ALGEBRA

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

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?

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

63. ## ALGEBRA

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

64. ## Physics

A flatbed truck with a box sitting on the bed accelerates from rest on level ground. The truck’s speed as a function of time is 15t –2t^2 during this acceleration. The truck reaches its maximum speed and cruises along at this speed for 4 minutes. It

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

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

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?

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) ?

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

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!

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

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.

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

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