# Questions Asked onJuly 19, 2012

1. ## math

chandni purchased some parrots.20%flew away and 5% died.of the remaining 45% were sold.now 33 parrot remain.how many parrot Chandni purchased.

2. ## math

Solve the equation 3^2x - 12 x 3^x + 27 = 0

3. ## math

After its fastest rate of growth ever during the 1980s and 1990s, the rate of growth of world population is expected to slow dramatically in the twenty-first century. The function G(t) = 1.58e−0.213t gives the projected annual average percent population

4. ## ECONOMICS

1) If the price of a product produced in a competitive market increases, which of the following is most likely to occur in the labor market for workers who produce the product? A) the demand for labor and the number of workers hired both increase B) the

5. ## physics

Suppose the slope of a beach underneath the ocean is 21 cm of dropoff for every 1.2 m of horizontal distance. A wave is moving inland, slowing down as it enters shallower water. What is its acceleration when it is 16 m from the shoreline? (Let the +x

6. ## NEED HELP ELECTRONICS

2. Two electronics technicians are looking at the technical manual for a piece of electronic equipment. The manual refers to a particular resistor as a “2.2 megohm resistor.” Technician A says that this means that the resistance value of the resistor

7. ## statistics

a survey from teeneage research unlimited found that 30% of teenage consumers receive their spending money from parttime jobs. If 5 teenagers are selected at random, find the probability that at least 3 of them have part time jobs

8. ## MATHS

two sides of a rectangle are 20cm and 10cm. They are increased in the ratio 2:3 and 3:7. Find the percentage increased in its area?

9. ## Calculus

On the basis of data collected during an experiment, a biologist found that the growth of a fruit fly (Drisophila) with a limited food supply could be approximated by the exponential model below where t denotes the number of days since the beginning of the

10. ## math

The price of a shirt is reduced by 30% to \$14. What was the original price of the shirt?

11. ## math

Angle A ? Angle B 90° Angle C 27°

12. ## english

please write a paragraph to show you comprehend what analogies and idoms are. use at least one analogy and one idom in the paragraph

13. ## Operations Management

A small grocery store sells fresh produce, which it obtains from a local farmer. During the strawberry season, demand for fresh strawberries can be reasonably approximated using normal distribution with a mean of 40 quarts per day and a standard deviation

14. ## phsycs

A person shouts in a canyon. 3 s later they hear the echo. How far away is the canyon wall from which the sound wave was reflected? how do i do this problem?

15. ## physics

Which direction will the support force by the wall point when the force diagram is drawn? The book is held motionless against a wall by yout hand. (Up, down, legt or right?)

16. ## math

if 1/3 of homework is done before dinner, and 3/5 after dinner. What fraction of homework remains?

17. ## economics

How does the expenditure approach calculate GDP? A. It adds up all the incomes in the economy. B. It adds up the value of four groups of final goods and services. C. It adds up the value of business goods and services. D. It adds up the value of consumer

18. ## math

simplify the following giving your answer with a rational denominator, 2 root3 - root 3/ 2 + root three.

19. ## Geometry

At a certain time of the day, a 4-meter-tall vertical pole casts a shadow of 3 meters. What is the angle of elevation, to the nearest degree, of the Sun?

20. ## statistics

3. Measurements on the percentage of enrichment of 12 fuel rods used in a nuclear reactor were reported as follows; 3.11 2.88 3.08 3.01 2.84 2.86 3.04 3.09 3.08 2.89 3.12 2.98 a. Test the Hypothesis H0: µ = 2.95 versus H1: µ 0 ≠ 2.95, and draw

21. ## Tech Math

A 490 newton woman stands on a bathroom scale while riding in a elevator that is accelerating downward at 2m/sec/sec. Find her apparent weight and her apparent mass. Compare to her starting mass.

22. ## Physics

Suppose 100 g of water at 20°C is poured over a 70-g cube of ice with a temperature of -8°C. If all the ice melts, what is the final temperature of the water? If all of the ice does not melt, how much ice remains when the water–ice mixture reaches

23. ## Physics

At a given temperature, why does the most probable particle speed (vp) differ from the average particle speed (vavg)?

24. ## math

sin è = 0.1736 O = ? H = 11

25. ## English - Rachel Renee Russell Bio

Is there a full biography about Rachel Renee Russell on how she became a writer and her books.

Which of the following statements does not apply to water? A. Like all liquids, water assumes the shape of its container. B. Water is a polar molecule. C. The strong surface tension of water allows it to adhere to the sides of a container and actually move

27. ## chemistry

How do you calculate the theoretical cell voltage? 1) Zn|Zn^+2 (1M)| Cu|Cu^+2 (1M) 2) Cu|Cu^+2 (1M)| Zn|Zn^+2 (1M) 3) Fe|Fe^+2 (1M)| Cu|Cu^+2 (1M) 4) Zn|Zn^+2 (1M)| Cu|Cu^+2 (0.1M) 5) Cu|Cu^+2 (1M)| Cu|Cu^+2 (0.1 M) Now 4 and 5 have different moles how do

28. ## math

On the basis of data collected during an experiment, a biologist found that the growth of a fruit fly (Drisophila) with a limited food supply could be approximated by the exponential model below where t denotes the number of days since the beginning of the

29. ## college math

The ratio of soda to diet soda in Bill's Supermarket is 8 to 9. If a person counted 72 bottles of soda, how many bottles of diet soda are there?

30. ## math

Assume that the average annual salary for a worker in the United States is \$32,000 and that the annual salaries for Americans are normally distributed with a standard deviation equal to \$7,000. Find the following: (A) What percentage of Americans earn

31. ## Statisics

The state lottery claims that its grand prize is \$1 million. The lucky winner will receive \$50,000 upon presentation of the winning ticket plus \$50,000 at the end of each year for the next 19 years. Why isn't this really a million-dollar prize? What would

32. ## geometry

A woman who is 6-ft tall casts a 4.5-foot shadow at the same time that a building casts a 75-foot shadow. What is the height of the building in feet?

33. ## calc

by cutting away identical squares from each corner of a rectangular piece of cardboard and folding up the resulting flaps, the cardboard may be turned into an open box. if the cardboard is 16 inches long and 10 inches wide, find the dimensions of the box

34. ## Chemistry

I had an equilibrium laboratory and had to answer a few questions after the lab. Here are 2 questions I can't seem to know how to answer. 1. Explain in your own words why a saturated solution in contact with some undissolved solid is considered to be an

35. ## math

wheels are 1.25 inches in diameter and the fastest speed is 3ft/second maximum distance to travel is 16 x (18cm)

36. ## SOCIAL STUDIES

Discuss the different developmental eras of American education.

37. ## Economics

Hi, would anyone please help me with this question for economics. It for an assignment due in several days, and it is very urgent, because I cant information about it, and our school teacher in absent until the day it is due. thank you Trade unions and

38. ## science

an electorn is 20 ccom away from a fixed point charge , q =-0.250uc . if it starst to move from rest , then how fast will it be moving when it is a t distance ?

39. ## science

how much work is done in bringing three electrons , which are intially a great disance apart to how fats will it be moving then it is at distance ?

40. ## Economics

Analyse the reasons for their opposition to the new industrial relations laws The 'new' industrial relations such as Fair Work Australia

41. ## physics

what is the acceleration of the sled

42. ## physics

What is optics?

43. ## fundamental of electricity

{[(20+5)//10ohms]+5ohms}//10ohms

44. ## math

(2x-3y)(2y+3x)

45. ## math

Solve the inequality 2x^2

46. ## math

What ia A inverse if A = (3 -2) (3 2)

47. ## Statistics

A researcher claims that at least 10% of all football helmets have manufacturing flaws that could potentially cause injury to the wearer. A sample of 200 helmets revealed that 24 helmets contained such defects. a. Does this finding support the

48. ## Health

Write a 200- to 300-word response to the following: What is long-term care? Provide an example. What is continuum of care services in the United States? Why is long-term care one of the greatest challenges facing the health care delivery system today?

49. ## MATHS

Determine (8x)of power x if 9 to the power x+2=240+9 to the power x.

50. ## algebra2

What are the x-intercepts for the graph of the quadratic function f(x)=1/4(x +2)^2-9

51. ## physics

A decorative piece consists of a 20cm long uniform brass rod weighing 4N and two ornaments, one weighing 6N and one weighing 10N, fixed to the ends. At what point should a supporting chain be attached so that the ornament balances?

52. ## eng literature

i am given up by a topic to write discriptive essay topic is "joys of juvenile life" What to write in starting and in the ending of this essay.

53. ## Trig

Verify the following identity: 1-cosx/sinx=sinx/1+cosx

54. ## Trig

verify the following identity: sin(x+y)*sin(x-y)=sin^2x-sin^2y

55. ## Trig

verify the following identity: cos(A-B)/cosAsinB=tanA+cotB

56. ## Trig

verify the following identity: tanx+cotx/cscx=secx

57. ## Trig

verify the following identity: 2sinxcos^3x+2sin^3cosx=sin(2x)

58. ## law

In the US it's presumed that every citizen?

59. ## literacy

To critically evaluate the qualifications of an author on a topic, carefully consider all of the following except the A. number and type of awards the author has received. B. author's age. C. other articles the author has written. D. author's educational

graph 2y-x=5

61. ## Psychology

What steps can I take to ensure that I remain an ethical and honest student?

30% of 59

63. ## physics

If an engine produces a (mass flow rate) of 100kg/s of thrust, what is the force in Newtons?

64. ## government

what are some drawbacks to the current buearucratic system?

65. ## calculus derivatives

Please confirm: {(5x+2)^4/x^2-3x+1)^3}= 20(5x+2)^2(x^2-3x+1)^3 -3x^2(5x+2)^4 (x^2-3x+1)^2/(x^2-3x+1)^6

66. ## English

Can I first self-publish my book first and then a month later I decide to publish it like normal authors do??? can I do that?

As defined by the British East India Company, a “presidency” was a A. company leader’s position. C. company base. B. trading agreement. D. coveted royal charter.

68. ## ECONOMICS

PLEASE HELP ME WITH THESE!!!!!!!! 1) If the price of a product produced in a competitive market increases, which of the following is most likely to occur in the labor market for workers who produce the product? A) the demand for labor and the number of

69. ## Government

Which of the following is NOT a reason for holding congressional investigations? A) to focus public attention on an important issue B) to oversee the executive branch and its operations C) on executive order from the President D) to gather information i

70. ## Physics

The thermal conductivity of fiberglass batting, which is 8.9 in thick, is 8.6 10-6 BTU/(ft °F s). What is the R value (in ft2 °F h/BTU)? The R value is 24 ft^2 Fh/BTU. How do I get this answer?

71. ## English

1. Thomas ____ there but a minute when his girl friend arrived. (be) 2. Some kids ____ to tears with the ordinary textbooks when they entered high school. (bore) (What is the suitable forms of the verbs of the parentheses in the blanks/) 3. Robert

72. ## math

How long will it take for an investment of \$13,000 to double if the investment earns interest at the rate of 6%/year compounded continuously?

73. ## Biology

Questions for Exam 1 for Concepts in Biology 12 edition

74. ## PHYSICS !!

A car weighing 10,000 newtons is parked in a garage. Which statement is true about the forces acting on the car?

75. ## English

Do you know her? -Is she the actress who always plays bizarre characters? -Yes, that's her. Shall I introduce you? -That would be fabulous. I'm going to ask for her autograph. (Would you check the dialogue? Are the sentences all grammatical? Would you

76. ## Civics

By the start of World War I, America had emerged as a global power. A large part of this power had to do with American expansion overseas. What territories did America acquire during the late 19th and early 20th centuries? What competing arguments exist

77. ## Physics

The Effect of Temperature on Gas Behavior Procedure 1. Chose any gas from the list box. Gas, Temperature (K), Most Probable Particle Speed (m/s), Average Particle Speed (m/s) 2. Set temperature to any value. Observe the shape of the frequency distribution

78. ## Physics

What happens to the particle speed as the temperature is increased?

79. ## Physics

How does the speed frequency distribution graph change for a given gas as the temperature is increased?

80. ## Physics

Does the trend of the change in shape of the graph as temperature increases differ when a different gas is examined?

81. ## PED212

Reflect on how your perceptions of physical education have changed based on your understanding of its evolution.

82. ## Physics

Exploration 2: the Effect of Mass on Gas Behavior Procedure 1. Set the temperature at 500 K. Maintain this temperature throughout this Exploration. 2. Select Hydrogen gas from the list box. Record the most probable particle speed and the average particle

83. ## Physics

At a given temperature, what relationship appears to exist between a gas particle's mass and its speed?

84. ## Physics

At a given temperature, what relationship appears to exist between a gas particle's mass and it speed? How does graph change as particle mass increase? Isra fills two identical balloons at identical temperatures. She fills one with O2 gas and the other

85. ## Physics

Explain why a balloon expands when heated and contracts when cooled.

86. ## Physics

Exploration 3: A Moving Source at Different Velocities Procedure 1. Set Wave speed to 10.0 cm/s and Source frequency to 1.0 Hz. Place the detector anywhere. 2. Set Source speed to 6.0 cm/s. Select Go. Sketch the resulting wave-front pattern on a separate

87. ## Calc

The U.S. population is approximated by the function P(t) = 556 1 + 3.72e−0.5t where P(t) is measured in millions of people and t is measured in 30-year intervals, with t = 0 corresponding to 1930. What is the expected population of the United States in

88. ## Calculus

Universal instruments found that the monthly demand for its new line of Galaxy Home Computers t months after placing the line on the market was given by D(t) = 2900 − 2300e−0.08t (t > 0) Graph this function and answer the following questions. (a) What

89. ## Calculus Voulme

find the volume of the solid generated by revolving the region r bounded by the graphs of the given equations about the y-axis. x^2+y^2=1 x=1 y=1

90. ## Helping Sites 4 Math

I know this really isn't a type of question for subjects, but i was just thinking, are there any sites for teaching math? I finished summer school, and i just want to review stuff in case i forgot.

91. ## Physics

IMAGINE- a building 6400km. high. On the ground floor, a person weighs 175lbs when he steps on a spring scale how much would the man weigh on the same scale if he were standing at the top floor? HINT: Note that 6400km is also the radius of the earth so

f(x)=[lnx]^5

93. ## Physics

Suppose you use a piece of fishing line to hang a large object from the ceiling. The line has a test strength of 125 lbs. Convert this to newtons, and determine the maximum mass that can be supported before the line breaks.

94. ## physics

suppose you took a 3m long piece of the fishing line discussed ( the line has a test strength of 125lbs) attached a 2.5 kg ball to the end, and spun it overhead. at what speed of the moving ball would the line break?

95. ## Volume

Find the volume of the solid generated by revolving the region bounded by the given curves and line about the y-axis. y=50-x^2 y=x^2 x=0

96. ## Mathematics

Maria answered all the problems on her math test. She answered 80 percent of the problems correctly. If she answered 6 problems incorrectly, how many problems were on the test?

97. ## chemistry

How do you calculate the theoretical cell voltage? 1) Zn|Zn^+2 | Cu|Cu^+2 2) Cu|Cu^+2 | Zn|Zn^+2 3) Fe|Fe^+2 | Cu|Cu^+2 4) Zn|Zn^+2 | Cu|Cu^+2 5) Cu|Cu^+2 | Cu|Cu^+2

98. ## Chemistry

Titration of a 21.0mL solution of requires 11.0mL of 0.0350M solution. What is the molarity of the solution?

99. ## physics

A 46-cm-long wire with a mass of 10.5 g is under a tension of 52.0 N. Both ends of the wire are held rigidly while it is plucked. (a) What is the speed of the waves on the wire?

100. ## Chemistry

A buffer system contains 0.25M NH4+ and 0.19M NH3. pka of NH4 is 9.25. How many moles of NaOH must be added to 1.00L of this solution to increase the pH to 9.25?

101. ## physics

The tension in a 2.8-m-long, 1.2-cm-diameter steel cable (ρ = 7800 kg/m3) is 825 N. What is the fundamental frequency of vibration of the cable?

102. ## science human nutrition

Write a 750- to 1,050-word paper that addresses the following points about the 3-day food intake information you recorded in iProfile: • Recorded intake of protein, carbohydrates, and lipids o Which foods in your recorded daily intake provide protein?

103. ## math volume

a rectangular sheet of cardboard size 5' by 8' is to be used to make an open box by cutting out the four corners. What is the largest volume and be sure to explain how you found the MAXIMUM volume please and Thank You!

105. ## physics

A wave on a string has a wave function given by y(x, t) = (0.0210 m)sin[(6.91 m^−1)x + (2.38 s^−1)t . (a) What is the amplitude of the wave? (b) What is the period of the wave? (c) What is the wavelength of the wave? (d) What is the speed of the wave?

106. ## statistics

A telephone company representative estimates that 40% of its customers use voice mail. To test this hypothesis, she selected a sample of 100 customers and found that 37 used voice mail. At a standard deviation of 0.01, is there enough evidence to show the

107. ## phsyics

Bat is flying 5m/s while chasing an insect that is flying in the same direction. The bat emits 40kHz chirp and hears a 40.4kHz reflected sound wave. What is the speed of the insect? ??? lost

108. ## Psych

Research on how easily men are persuaded in relation to women shows that

109. ## literacy

Search engines are most useful for finding

110. ## Calc

The length (in centimeters) of a typical Pacific halibut t years old is approximately f(t) = 210(1 − 0.94e^−0.2t). (a) What is the length of a typical 9-year-old Pacific halibut? cm (b) How fast is the length of a typical 9-year-old Pacific halibut

111. ## Mathematics 1

In audition for school play, 70% passed the quality of the jurors for the first week. of those remaining, 20% were chosen. if only 7 were qualified, how many tried their luck?

112. ## physics

A 326 g object is attached to a spring and oscillates with a period of 0.25 s. The total energy in this system is 5.83 J. What is the amplitude of the motion?

113. ## What does this mean

In art, I was given a painting, and im suppose to include four points in my analysis of why it is considered realistic, also i have to qualify my analysis with reasoning fitting the historical period of the art. What does all this exactly mean? For the

114. ## MATHS

find the square root of 0.5