# Questions Asked onDecember 5, 2006

1. ## finding c: calc

let f(x)=square root x. if the rate of change of at x=c is twice its rate of change at x=1, then c=? what???? i don't get get it. to begin with, i took the derivative if that helps which is 1/(2*sqrtx) . f'(x) = 1/(2*sqrtx) is correct f'(x=1) = 1/2 The

2. ## Economics

you are hired as the consultant to a monopolistically competitive firm. The firm reports the following information about its price, marginal cost, and average total cost. Can the firm possibly be maximizing profit? If the firm is profit maximizing, is the

3. ## phyiscs

How do I do these? Draw a free-body diagram for each of the following objects? a. a projectile in motion in the presence of air resistance b. a rocket leaving the launch pad with its engines operating c. a heavy crate being pushed across a rough surface a.

4. ## Probaility

The rates of on time flights for commercial jets are continuously tracked by the US Department of Transportation. Recently, Southwest Air had the best rate of 80% of its flight time on time. A test is conducted by randomly selecting 15 southwest flights

5. ## Physics

A 50.0 kg parachutist jumps out of an airplane at a height of 1.00 km. The parachute opens, and the jumper lands on the ground with a speed of 5.00 m/s. By what amount was the jumper's mechanical energy reduced due to air resistance during this jump? so,

6. ## physics

A student sits on a freely rotating stool holding two weights, each of which has a mass of 3.00 kg. When his arms are extended horizontally, the weights are 1.00 m from the axis of rotation and he rotates with an angular speed of 0.750 rad/s. The moment of

7. ## Physics

A 70.0 kg base runner begins his slide into second base while moving at a speed of 4.0 m/s. The coefficient of friction between his clothes and Earth is .70. He slides so that his speed is zero just as he reaches the base. How much mechanical energy is

8. ## Physics

A 55 kg ice skater, initially at rest on a flat skating rink, requires a 198 N horizontal force to be set in motion. However, after the skater is in motion, a horizontal force of 175 N keeps her moving at a constant velocity. Find the coefficients of

9. ## PHYSICS

The forces acting on a sailboat are 390 N north and 180 N east. If the boat (including crew) has a mass of 270 kg, what are the magnitude and direction of its acceleration? Compute the resultant force by vector addition and divide it by mass for the

10. ## Physics

A 215 g particle is released from rest at point A (the middle of one side) inside a smooth hemispherical bowl of radium 30.0 cm. Calculate the gravitational potential energy at A relative to B. (B is in bottom-middle of the bowl) Ok, so PE_g=mgh. How would

11. ## Economics

Among monopoly, oligopoly, Monopolistic competition, and perfect competition, how would you classify the markets for each of the following drinks? a. tap water b. bottled water c. cola d. beer I think it would be... a. Monopoly b. Oliopoly c. monopolistic

12. ## Health

"Smoking causes drastic changes in the _______ system, which is responsible for converting foods into the nutrients the body needs to survive." This is a question on a health crossword puzzle given to me by my teacher. Problem is, I know nothing about this

13. ## Economic

3. A large share of the world supply of diamonds comes from Russia and South Africa. Suppose that the marginal cost of mining diamonds is constant at \$1,000 per diamond, and the demand for diamond is described by the following schedule. Price/Quantity:

14. ## Physics

Tsunamis are fast-moving waves often generated by underwater earthquakes. In the deep ocean their amplitude is barely noticable, but upon reaching shore, they can rise up to the astonishing height of a six-story building. One tsunami, generated off the

15. ## Chloral Hydrate

What is the molar mass of chloral hydrate and how many moles of C2H3Cl3O2 molecules are in 500 g chloral hydrate. Also, what is the mass in grams of 2.0 x 10^-2 mol chloral hydrate? Molar mass? You can add them up. Starting at the left, 2 carbons, three H,

16. ## chemistry

The freezing point of a 0.010 m aqueous solution of a nonvolatile solute is ?0.072°C. What would you expect the normal boiling point of this same solution to be? have no clue, thanks for the thelp Freezing point depression= N*kf* molality you have

17. ## another english multiple choice question

They swarmed up towards Sherburn's house, a-whooping and raging like Injuns, and everything had to clear the way or get run over and tromped to mush, and it was awful to see. Children was heeling it ahead of the mob, screaming and trying to get out of the

18. ## Pre-Calculus

Solve for x,y,z, & w using the Gauss-Jordan Elimination Method 5x+3y+z+5w=-2 3x+2y+2z+4w=2 2x+4y+3z-3w=-11 4x-3y-2z+2w=-3 Can anyone help me please? Thanks.... What is the Gauss-Jordan Elimination Method?

19. ## Economics

50. In both monopolistic competition and non-price-discriminating monopoly, isn't the marginal revenue curve lies below the demand curve? 51. A monopolistically competitive firm is producing an output level where marginal revenue is greater than marginal

20. ## Physics

This time I have two questions: #1.A recording engineer works in a soundproofed room that is 49.7 dB quieter than the outside. If the sound intensity in the room is 2.66 x 10-10 W/m2, what is the intensity outside? #2.A listener increases his distance from

21. ## Writing--Plz Help!!

I am confused with this question that I have on a homework assignment. When developing a written plan, a technique in which the writer includes every detail as it occurs is called: 1. writing a rough draft 2. outlining 3. brainstorming I am leaning toward

22. ## Chem

Fungal laccase is .390% Cu by mass. If a fungal laccase molecule contains 4 Cu atoms, what is the molar mass of fungal laccase? Molar mass= mass of 4Cuatoms/.390

23. ## the big idea of energy

i have to do an assesment about sound. i have to include the big idea of energy. i have no clue what it is! HHEELLPP MMEE!! What do you mean when you say "the big idea of energy"? I know that sound is created by vibrations, but I'm not sure that's exactly

24. ## ENGLISH

Hello, what is the format of "affiliation" in a lab report? A lab report? Are you sure this isn't a science assignment?? http://www.google.com/search?hl=en&q=affiliation+lab+report&btnG=Google+Search ??

25. ## Chemical Kinetics

The Decomposistion of nitrosyl chloride was studied: 2NOCl(g)--2NO(g)=Cl2(g) The following data were obtained where Rate= - change[NOCl] ------------ change in temp [NOCl]0 Initial Rate (molecules/cm^3) (molecules/cm^3*s)

26. ## Quick Math

I still have a question. My first one has been answered(I, but I am going to write it down anyways, incase it realtes to the first quesion. (I)What is the cost of s dozen dozen apples at half a dozen dimes a dozen? (II)(This one I don't understand) What is

27. ## history

ive got 2 questions....what points does Thomas Paine make in the pamhlet, Common Sense?? and what impact did Pain's pamphlet have in the colonies?? This site will give you an analysis of the pamphlet: http://www.sparknotes.com/lit/commonsense/

28. ## Statistics

The Wechsler Adult Intelligence Scale (WAIS) is a common "IQ test" for adults. The distribution of WAIS scores for persons over 16 yrs of age is approximately Normal with mean (100) and Standard Deviation 15, (a) Whatis the probability that a random chosen

29. ## Quick Math

Is a dozen dozen equals to 24? wouldn't a dozen dozen be 144? and 144 is a gross. a dozen is 12 a dozen is 12 so isnt that 24? When you say double double such as in coffee. You want two milk and two sugar. That's four. So wouldnt dozen dozen be 12 and 12?

30. ## Probability

You throw a beanbag at a wall with 7 colored squares, each with an area of 1/4^2. If you hit a square, you win a prize. What is the probability of winning a prize? You need more information. For starters: 1) what is the total area of the wall? 2) Are

31. ## Rate determining step

I don't understand how to get a rate determining step. I have an energy diagram for a two-step conversion where the first step Ea is about 18 units. The energy then goes down about 4 units and rises again about 10 units to the peak of the second step. Why

32. ## calc volumes

the basse of a solid S is the region enclosed by the graph of y=square root (ln x), the line x=e, and the x-axis. if the cross sections of S perpendicular to the x-axis are squares, then the volume of S is. how do i find the side of the squares. because i

33. ## Math

I have a question: How would you solve this? a dozen dozen apples at half a dozen dimes a dozen? In this cause is dozen 12? And half a dozen dimes in 60 cents? would that be 120? b/c a dozen dozen is 24 so u have 24 apples and then you have 60 cents per

34. ## Economics

For the following characteristic say whether it describes a perfectly competitive firm, a monopolistically competitive firm, monopoly firm, or neither. a. Has marginal revenue less than price. I would think this would be neither. b. Produces at minimum of

35. ## math , algebra

Let me know if this is correct : (1)Finding the lcm using which ever method for:5,15 , and 20 8:2x2x2x3x5x5 15:2x2x2x3x5x5 20:2x2x2x3x5x5 --------------- LCM:2x2x2x3x5x5 After simplification LCM:120 (2)Find the GCF for each of the following numbers: 36,

36. ## Accounting

Here is another question I am having trouble with, please help!!!! 3. The following totals for the month of March were taken from the payroll registrar of the X company: Salaries (all subject to social security & Medicare taxes \$14,000 Federal income taxes

37. ## Microbio

Can someone check my answer please? How does the antibiotic penicillin kill bacterial cells? Is it more effective against gram positive or gram negative organisms? Explain. Most bacteria produce a cell wall that is composed partly of a macromolecule called

38. ## math

A man can paint a fence in 8 hours. Another man can paint that fence in only 7 hours. A third man can paint that fence in only 5 hours. How long will it take for all three men to paint the fence? in one hour, man1 can paint 1/8 of the fence, man2 can pain

39. ## English

In modern English, the comparative/superlative for the word "bad" is indicated as worse/worst. A number of years ago, it was worse/worse. When did this change? It has not changed. See below: http://www.jiskha.com/display.cgi?id=1165241783.1165245841 =)

40. ## Physics

Two movers have to life a refrigerator onto a truck. One of the movers wants to lift the refrigerator vertically, but the other mover wants to roll it up a ramp by applying a force parallel to the ramp. Assume the height of the truck is 1.5 m, the length

41. ## Science

What has a physical and chemical change at the same time, apart from a candle burning wood.

42. ## math right triangle

the hypotenuse of a right triangle is 1 inch longer than one leg and 8 inches longer than the other. Find the length of each side of the triangle. Let l1, l2 be the legs. l1^2 + l2^2 = h^2 but h= l1+1 and h= l2 + 8 solve these for l1, l2, put them in the

43. ## Math

Pipes A & B can fill a storage tank in 8hours and 12 hours, respectively . With the tank empty ,pipe A was turned on at noon, and then pipe B was turned on at 1:30 P.M.At what time was the tank full. Please help me!! Let V be the tank volume. Pipe A fills

44. ## Statistics

Males make a mean of 531 on math SAT with standard deviation of 114. Minimum 600 score. what's the % of males that don't satisfy this requirement? Pregnancies usually distributed mean of 268 days and standard distribution 15 days. Baby born three week

45. ## english multiple choice

Then he says, slow and scornful: "The idea of you lynching anybody! It's amusing. The idea of you thinking you had pluck enough to lynch a man! Because you're brave enough to tar and feather poor friendless cast-out women that come along here, did that

46. ## BORED!!!

HAS ANYONE EVER READ THE BOOK BEWARE PRICESS ELIZABETH BY CAROLYN MEYER? I NEED TO RITE A REPORT ON IT. SOS! The question really is -- have YOU read it? If you haven't read it, it'll be pretty hard to write a report about it. All I find when I search

47. ## Chemoautotrophs

What are chemoautotrophs? Here are some questions I can answer: 1. What are chemoautotrophs? 2. What 'fuels' chemoautotrophs? 3. Are chemoautotrophs important in Biology? Why? Here are the answers: 1. Organisms that produce energy by chemosynthesis,

48. ## chemistry

I A QUESTION WHAT IS Mg+HCL->MgCL2 +H2 IS IT SYNTHESIS, SINGLE REPLACEMENT, DOUBLE REPLACEMENT OR DECOMPOSITION THX BYE Single replacement. Mg replaced the H.

49. ## solving for x math

2e^(4x^2)=3 how do i solve for x. do i use the ln methode because i don't know how to do that. by calculator, i got x=.168 but i don't know how to show my work. please help me solve for x. Take natural logs of both sides. ln 2 + 4 x^2 = ln 3 4 x^2 = ln

50. ## Microbio

I have a hard time with this finding the concept for the below: plz help How and in what way does the input of organic matter, such as sewage, effect the O2 content of a river or stream? A pond or lake? Does the organic matter get digested by bacteria,

51. ## Chemistry- titration

OK I REALLY NEED HELP!!! and i AM DESEPRATE!! I have a titration courswork tomorow and i need to know the measurment,procedual and significant errors that are made in titration and how they can be improved. Also i need help with the evaluation bit. I

52. ## Statistics

Please help me figure them out. 1. In the 105th Congress, the Senate consist of 55 Republicans and 45 Democrats. If a committee is formed by randomly selecting four different senators, what is the probability that they're all Republicans? 2. It's common

53. ## help SCIENCE help

What is the difference between an atom, compound, and mineral??????? Please help, Thanks Atom= matter in the form of small units Compound= elements chemically combined Mineral= inorganic nutrients that regulate many chemicals in the body for definition of

54. ## Cyclohexane

If you knew that you had either cyclohexane or cyclohexene in the lab but weren't sure which, how could you determine which it was? Thanks from Sheryl Since I'm not an organic chemist I would think of an organic test LAST. Density, refractive index, and

55. ## mathematics (percentages)

math problem: pedro wants to calculate his gpa. he has the lab grades:90/100,98/100,90/100,94/100,90/100,90/100,95/100,98/100. Labs are worth 20%. He has the test grades: 9/10,6/10,10/10,10/10,5/10,7/10,7/10,7/10,10/10,10/10,8/10,10/10. Homework is worth

56. ## 3rd grade social studies

where can i find some good information on christopher columbus for a good report. http://en.wikipedia.org/wiki/Christopher_Columbus and http://www.columbusnavigation.com/ and http://www.ibiblio.org/expo/1492.exhibit/c-Columbus/columbus.html =) thanks

57. ## Physics

A rocket in a fireworks display explodes high in the air. The sound spreads out uniformly in all directions. The intensity of the sound is 2.89 x 10-6 W/m2 at a distance of 127 m from the explosion. Find the distance (in m) from the source at which the

58. ## algebra 1

I'm stuck on this problem. Can you help? -4x-9y=1 -x + 2y =-4 WHat is x and y? Two equations in two unknowns. Here is a quick way to solve them -4x - 9y = 1 4x - 8y = 16 (I got that my multiplying both side so the secind equation that you provided by -4)

59. ## Geometry and Algebra

AB is a diameter of a circle with centre O. P is on BA extended, and PT is tangent to the circle. Use the corollary to the Intersecting Secants Property to prove that PT is perpendicular to OT. Here is the diagram (Without the dashes in the "com" and

60. ## Account

Here is my question, please help!!! 5. Assume that Z company's chief financial officer gave you the following information: net sales, \$3,800,000; cost of goods sold, \$2,100,000; extraordinary gain (net of income taxes of of \$7,000), \$25,000; loss from

61. ## English

What means tender? There are a lot of meanings for tender. http://www.onelook.com/?w=tender&ls=a

62. ## Chem

How would a Lewis Dot Structure be drawn for CO +1? I can't seem to get it to satisfy the octet rule and have the right number of electrons. How many electrons do you have? 1C = 1 x 4 = 4 electrons. 1O = 1 x 6 = 6 electrons. Total is 10 electrons. -1

63. ## Algebra

if y varies direct as 8, and y is -60 when x is -5, find y when x is 3. gurl i don't no i need help myself Assume y's direct function is either a multiplication or division; I chose the second one. So a trial shows y at -60 = x at (-5 + const 1) x const 2

64. ## algebra 1

a+(3a-2a)-(4a-3b) Combine the "a" tems and you can reduce this to _?_a + 3b. You do the math.

65. ## physics

1- a pipe of diamter 1cm carreiers water flowing at 1m/s. the end of the pipe is bplugged and there is a small holeon the top as shown which is 1mm diameter. How high does the water go? *=hole ()____________*___() 2. you're indoors, with a door 1m wide and

66. ## Percentages: Oops, one more thing

Forgot to mention that the exams are each 10%. It's 40% because he had 4 exams. math problem: pedro wants to calculate his gpa. he has the lab grades:90/100,98/100,90/100,94/100,90/100,90/100,95/100,98/100. Labs are worth 20%. He has the test grades:

67. ## Probability

Using standard deviation. Normally distributed mean of 0 degrees standard deviation of 1.00 degrees celcius. 1. between 0 and 1.28 2. greater than 0.37 3. less than -0.92 4. between 1.50 and 2.50 5. between -0.90 and 1.95 6. less than 0 I don't know how to

68. ## Health

Can anybody give me the name of a liver disease that may be caused by smoking? It has 9 letters, and the fifth one is "h". Search 'liver disease' and smoking on google and you'll find it. I'm sorry, I couldn't find it. well, just searching 'liver disease'

69. ## Quick Math

I have a question: How would you solve this? a dozen dozen apples at half a dozen dimes a dozen? In this cause is dozen 12? And half a dozen dimes in 60 cents? So half a dozen dozen is 144/2 so that's 72 correct? yes, half a dozen dozen is 144/2 = 72 but I

70. ## math

What is the equation of the tangent line given the curve: y = (3+lnx)^2 at x = 1/e dy/dx = 2[3 + Ln(x))]*1/x at x = 1/e this is: 4*e y(1/e) = 4 The equation of the tangent line is thus given by: 4e(x-1/e) + 4

71. ## Mathematics

How would you solve for: (the square root of 7-the square root of 3)^2 ^=the power of [sqrt(7) - sqrt(3)]^2 = 7 + 3 - 2sqrt(21) = 10 - 2sqrt(21)

72. ## math/Check!

okay so the question is as follows: determien the standard form of the equation of a hyperbola with vertices(+or- 2,0) and passing through (4,3) is this right? x^2/2^2 - y^2/b^2 =1 Since P(4,3) passes through, the x and y coordinates satisfy the equation:

73. ## mathematics (percentages)

math problem: pedro wants to calculate his gpa. he has the lab grades:90/100,98/100,90/100,94/100,90/100,90/100,95/100,98/100. Labs are worth 20%. He has the test grades: 9/10,6/10,10/10,10/10,5/10,7/10,7/10,7/10,10/10,10/10,8/10,10/10. Homework is worth

Do any of you have any ideas about a reading project? The book is about an african american family that moves into a historic house that used to be a part of the underground railroad.(the book is called the House of Dies Drear)We are supposed to come up

75. ## Physics

I need more help on these, please? jiskha. com/ display.cgi?id=1165350274 jiskha. com /display.cgi?id=1165357718 jiskha. com /display.cgi?id=1165347130 Thanks... I'm desperate. I've been gone today and yesterday from school and don't quite understand what

76. ## math/check!

okay so the question is as follows: determien the standard form of the equation of a hyperbola with vertices(+or- 2,0) and passing through (4,3) is this right? x^2/2^2 - y^2/b^2 =1 Since P(4,3) passes through, the x and y coordinates satisfy the equation:

77. ## algebra 1

7a+[4a-6b-(8a+2b)] ok so you would get this 7a+[4a-6b-8a-2b]

78. ## Jeans

hey can someone please please please help me i need to find some articles actually 3 they can be articles or books about the fashion of jeans during three different time periods the 1950s, 1980s, and present day. i don't want a history of jeans but more of

79. ## Statistics

Find probability of getting outcome of heads and a five when a coin is tossed and a single die is rolled. = .50 for coin toss .17 for die Poll confidence level. Common for public opinion polls to have confidence level of 95%.If 5 different organizations

80. ## english multiple choice

The crowd washed back sudden, and then broke all apart, and went tearing off every which way, and Buck Harkness he heeled it after them, looking tolerable cheap. I could 'a' stayed if I wanted to, but I didn't want to. Huck's words "but I didn't want to"

81. ## Microbio

Think on two complex tinkertoy models that exactly fit one way only. Compare that to the substrate (one tinkertoy model) and the enzyme (the other model). In fact, the lock and key model fits several chemical, biological, and cellular reactions. (Broken

82. ## Math

Whats a consisnent. like suppose 2,3,6,9,8 Can someone help please? Can someone help please: What are conssitent numbers in math? i need help on my math its algebra

83. ## math

At what point to the curve y=4+3lnx is the tangent line paralell to the line 5y-x=10. 3/x = 1/5 ---> x = 15

84. ## algebra

if y varies directly as x, and y is -60 when x is -5, find y when x is 3 The mass of an object varies directly as its volume. The mass of the object is 150 grams when its volume is 600 cm3. Find the mass of the object when the volume is 950 cm3

85. ## Calculus

f (x) = 8x^3 - 12x What is the question? You have defined a function but not said what you want to do with it.

86. ## math, question

Is there anywher i can go for further explanations on how to solve for the following statements on how to solve them: Dividing writing each result in simplest form & adding & subtracting The second sentence makes no sense to me.

87. ## math, word problem

How do I write the equation for this problem in order to solve it.I can solve it as long as someone shows me how to get the equation. (1)Science. Solve the following application. Jose rode his trail bike for 10miles. Two-thirds of the distance was over a

88. ## Economics

The state of the US economy is one where the price level has decreased from 110 to 120. Manufacturers are finding that their inventories are increasing. Foreign countries are finding that the exchange rate of the US dollar is down. Americans are

89. ## math

what is the diameter of a circle whose circomfrence is about 15.7 cm. divide the circumference by PI Divide the circumference by pi = 3.1416 to get the diameter

90. ## World History Paper

Please give feedback on the following paper: The American Revolution and the French Revolution each greatly affected many people and how the countries were run. This essay will consider the impact of these two revolutions on economy, revolutionary thought,

91. ## biology

Why are enzymes needed by the cell? en.wikipedia. org/wiki/Enzyme

92. ## biology

Can someone explain how the DNA vaccine differ from a traditional vaccine?

93. ## European History

Explain the role of science and empiricism in reshaping Europen cities in the nineteenth century. How did advancements in science and technology improve the lives of the working class in Europe? These sites may be of help.

94. ## French Translation needed

I translated some of this but it's not making sense to me. Here it is: On dit qu'il faut etre actif pour apprecier la vie. Etes-vous d'accord? Que veut dire actif pour vous? Illustrez votre opinion avec vos propres experiences ou avec des experiences que

95. ## Health

Another crossword question is: A womans risk of dying of this type of cancer is increased by 25% if she is a smoker. It has 6 letters, and the second one is "r". think of a gender-specific type of cancer. Any suggestions?

96. ## biology

Can someone explain how the DNA vaccine differ from a traditional vaccine? Since this is not my area of expertise, I searched Google under the key words "DNA vaccine" to get these possible sources: http://people.ku.edu/~jbrown/dnavac.htm

97. ## Critical Thinking

As answered several times before -- Posted by Ms. Sue on Tuesday, June 20, 2006 at 9:47am. Check these sites to help you answer your question. (Broken Link Removed) http://en.wikipedia.org/wiki/Rhetoric ----------------------- Posted by Ms. Sue on Monday,

98. ## Chemistry - Hybridization

Can anyone help me with this questioin pleasee? Describe the orientation and relative energy levels of sp2 and sp3 orbitals with respect to unhyberdized orbitals (1s, 2s, 2px, 2py, 2pz orbitals) 1s and 2s are spherical. 2px, 2py, and 2pz are at 90o to each

99. ## limit

limit h->0 [sqrt((4+h)) - 2] / h = ? Thanks multiply numerator and denominator by [sqrt(4+h)+2] numerator becomes h denominator becomes h([sqrt(4+h)+2]) the h/h becomes 1, now take the limit.

100. ## english

I need to do a small research project on "Popular plays in London, in the 1800's". I looked on google, but they didn't really help me. Does anyone know any websites where I could find some info? If you do, it would REALLY help;) tHaNkS!

101. ## ETH

If someone made the below statements to you,Asian Americans and Pacific Islanders are a model minority? Asian Americans and Pacific Islanders belong to a single "Asian American" culture. how would you explain that the statements are misconceptions? Include

102. ## Entrepreneurship

What are five fixed cost? Fixed costs are things a firm pays regardless of how much it produces, sells, or services. Expenses like rent, interest on loans, licence fees, property taxes, certain tools or fixed equipment, insurance, phone hookup, etc.

103. ## biology

what is the space surrounding the nucleus of an atom contain?

104. ## social studies

need information about western African Indians, and their food,shelter clothing? What time period?

105. ## political science

What philosophy does Samuel P. Huntington follow? Who are some of his supporters and opposers? http://en.wikipedia.org/wiki/Samuel_P._Huntington

106. ## GEOLOGY-IMPORTANT

hi i am looking for geologically relevant song lyrics or poetry published after 1990. The stuff cant be writen by a geologist either. i realllly need to find this any help i would appreciate so much!!! thank you.

107. ## english

what does the word essential mean? http://www.answers.com/essential =)

108. ## Maths test

A store gives a staff discount of one fifth. How much would a member of staff pay for: a) a camera with a retail price of £215? just do 215 divided by 1/5 (0.20) and you'll have the amount in "pounds" (i think that's what that sign stands for)....if you

109. ## popular plays in the 1800's

I need to do a small research project on "Popular plays in London, in the 1800's". I looked on google, but they didn't really help me. Does anyone know any websites where I could find some info? If you do, it would REALLY help;) tHaNkS!

110. ## Health

I know I'm probably bugging you guys, but: What system protects the body from foriegn substances? It has 6 letters, and the 4th letter is a "u" and the 6th letter is a "t". imune system wait...its actually spelled immune system No, but thanks!