Questions Asked on
August 28, 2014

  1. calculus

    2. Worldwide annual sales of all cell phones is approximately -10p + 1600 million phones when the wholesale price is $p. a) If manufacturers are prepared to supply q = 14p – 800 million phones per year at a wholesale price $p, what would be the

    asked by Marianne
  2. science

    A particle beam is made up of many protons each with a kinetic energy of 3.25times 10-15J. A proton has a mass of 1.673times 10-27kg and a charge of +1.602times 10-19C. What is the magnitude of a uniform electric field that will stop these protons in a

    asked by sam
  3. finance

    You borrow $149,000 to buy a house. The mortgage rate is 7.5 percent and the loan period is 30 years. Payments are made monthly. If you pay for the house according to the loan agreement, how much total interest will you pay?

    asked by solooloo
  4. Science

    Which of the following best describes a scientific theory? A.A scientific theory is a rule of nature that can never be changed. B.A scientific theory is an educatrd guess about the possible results of an experiment. C.A scientific theory is a description

    asked by Beau
  5. Advanced Math

    1.Tasha believes that she can rewrite the difference 120-36 as a product of the GCF of the two numbers and another difference.Is she correct?Explain your answer. 2.Explain how to find the GCF of three numbers 3.Xiao's teacher asked him to rewrite the sum

    asked by Hailey 6th grade
  6. Rounding nearest numbers

    Write a number that rounds to 47000 when rounded to the nearest thousands and to 50000 when rounded to the nearest ten thousands

    asked by Domingo
  7. finance

    Mr. Two can afford car payments of $235 a month for 48 months. The bank will lend him money to buy a car at 7.75 per cent interest. How much money can he afford to borrow?

    asked by solooloo
  8. math

    You have a large container of olive oil. You have used 25 quarts of oil. Twenty - five percent of the olive oil remains. How many quarts of olive oil remain?

    asked by Uzzielx
  9. Physics

    Each crate moves from position 1, to position 2 to position 3. All of the crates are identical. the coordinate values given are in meters. Rank A through F in order from least to greatest, on the basis of the displacement from the position 1. If any crates

    asked by JuYoung
  10. Biology

    What are two traits of an information source that may indicate the information given is scientifically unreliable? Answer: peer review does not necessarily indicate that the other field expert reviews are in agreement with conclusions of the original

    asked by Please Help
  11. pmdc

    Calculate the mass of Mg metal required to consume 2560g of CO2 in the reaction. 2Mg+CO2_2MgO+C

    asked by Asad khan
  12. Language Art

    Which of the following is not part of a rising action? A.Squeaky and Raymond confront Mary Louise and her friends on Broadway. B.Mr.Pearson hints to Squeaky that she should consider letting the new girl win. C.Squeaky is responsible for taking care of

    asked by Gwen
  13. Calculus

    1.if a ball is thrown into the air with a velocity of 35ft/s, it's height in feet after t seconds is given by y=35t-10t^2. Find the averag velocity for the time period beginning when t=4 and lasting 0.05s. 2.if a ball is thrown into the air with a velocity

    asked by Jacke
  14. probability/Geometry

    of the 400 doctors attending a conference 240 practice family medicine and 130 were from countries outside the US.1/3 of the family medicine practitioners were not from the US. Whats the probability that a doctor practice family medicine or is from the US?

    asked by Polly
  15. calculus

    1. The demand for your hand-made skateboards in weekly sales is q = -3p + 700 if the selling price is $p. You are prepared to supply q = 2p – 500 per week at price $p. At what price should you sell your skateboards so that there is neither shortage nor a

    asked by Marianne
  16. Science

    An environmental group claims that a local chemical plant is polluting a nearby river. They are calling for a shutdown of the chemical plant. What evidence would help you the most in evaluating their claim? A.A repeated study that shows chemicals produces

    asked by Gwen
  17. Science

    Having scientic literacy involves being able to? A. ask scientific qustions. B. evaluate scientic information. C. understand scientific terms. D. all the above. i think C.

    asked by chris
  18. science

    why ch3cn act as both electrophile and nucleophile?

    asked by ankit
  19. Science in motion pHY 102

    Find the net force produced by a 30-N force and a 20-N force in each of these cases: (a) Both forces act in the same direction. The net force produced by 30-N force is 60-N The net force produced by 20-N force is 40=N Applied Forces Net Forces 30-N = 60-N

    asked by Sharon
  20. algebra

    solve the equation or formula for the indicated variable R=ts^2+3 a)s=under radical R-3/t (not under radical b)s=everything under radical R-3/t c)s=R (under radical)-3/t d)s=everything under radical R/t-3 Thanks again I feel really stupid not being able to

    asked by Kandy
  21. chemistry

    Please I need help. Many,but not all, compounds are made up of positive and negative ions. Three positive ions A^+, B^2+ and C^3+ could form a total of six different compounds with negative ions, Y^2- and Z^3-. Derive the formulae for six compounds and

    asked by Shane
  22. calculus

    A wall 10 feet high is 8 feet away from a house. Find the length of the shortest ladder that will reach the house when one end rests on the ground outside the wall. So in here. I did the similar triangle property. so i got y=10(x+8)/x . And i substituted

    asked by Jhun Sanchez
  23. Geometry

    If angle AOB = 28, Angle BOC = 3X-2, and Angle AOD = 6x... and if Angle AOD = a total of 110 degrees. Then what is the measurement of Angle BOC and Angle AOD

    asked by Sacha
  24. science

    The chef has 50 pounds of strip loin. The trim loss on the strip loin is 60% and the cooking loss is 20% of the trimmed weight. How many pounds of trimmed, cooked strip loin will the chef have left to serve to his customers?

    asked by Uzzielx
  25. phys

    A point charge of -4 mu or micro CC is located at x = 4 m, y = -2 m. A second point charge of 12 mu or micro CC is located at x = 1 m, y = 4 m. SO I took E=Eq1 +Eq2 and got 6967.368 N/C but it is wrong

    asked by kenzie
  26. algebra

    Two Questions: 1) A certain radioactive isotope has leaked into a small stream. 100 days later after the leak 10% of the original amount of the substance. Determine the half-life of this radioactive isotope. 2) During a research experiment, it was found

    asked by kenni
  27. 12th Grade Physics

    Ben pulls a rope that is attached to a wagon with a magnitude of 300N. He pulls it in a way that te rope is at an angle of 30 degrees from the horizontal. The mass of the wagon is 2kg and the mass of Mike, who sits on the wagon, is 20kg. While the wagon

    asked by Ana
  28. us history

    I have settled in the Caribbean in search of gold and riches to bring back for my country. Which of the following best describes me? (5 points)Spanish conquistador French fur trader British indentured servant Dutch fur trader

    asked by daliz hernandez
  29. Maths

    A circular lily pond is surrounded by a gravel walkway that is 4 m wide. Calculate the area of the walkway if the pond is 12 m in diameter.

    asked by Harry
  30. math

    you download 12 new songs to your mp3 player. then you delete 5 old songs.. write each amount as an integer?

    asked by don
  31. math problem solving

    the digit 5 occurs two times in the population of fairbanks. what is the value of each 5? explain your answer fairbanks- 35,252

    asked by janice
  32. Math

    A rectangular garden is to be fenced by a farmer. One side of the garden is next to the wall of the house and need not to be fenced. Find the dimensions of the largest garden that can be enclosed with 100m of fencing.

    asked by Agnes
  33. Chemistry

    The level of water in a rectangular swimming pool needs to be lowered 4.00 inches. If the pool is 36.50 ft long and 15.00 ft wide, and the water is siphoned out at a rate of 5.0 gal/min, how long will the siphoning take? 1 ft^3 = 7.48 gal.

    asked by Danielle
  34. Science

    which of the following statements incorrectly describes a tool used by scientists? A. A compound light microscope enables a scientist to view objects too unaided eye to see. (B).A beaker is a type of glassware a scientist uses in the lab to record data. C.

    asked by chris w
  35. History

    Which calendar is primarily used to organize historical time?

    asked by Katt
  36. Algebra II

    Please check my answers With two parallel lines cut by a transversal, the number of pairs of alternate interior angles is equal to the number of pairs of corresponding angles. (1 point) Always Sometimes Never *I think the answer is sometimes Opposite

    asked by BrainHurts
  37. science

    When a test charge q0 = 9 nC is placed at the origin, it experiences a force of 8 times 10-4 N in the positive y direction. (c) If this force is due to a charge on the y axis at y = 3 cm, what is the value of that charge? so in a I found E to be 88888.889

    asked by sam
  38. finance

    You may to invest in a coffee plantation in South Australia. The investment promises to pay $5,000 at the end of year 3, $5,000 at the end of year 4, $5,000 at the end of year 6 and $10,000 at the end of year 10. Similar investments return approximately

    asked by solooloo
  39. statics

    In a given year every 100 babies born, there were 6 more boys than girls. If we were to randomly pick a child from a representative group, what is the probability of picking a girl?

    asked by jjackie
  40. Math

    Please check my answers With two parallel lines cut by a transversal, the number of pairs of alternate interior angles is equal to the number of pairs of corresponding angles. (1 point) Always Sometimes Never *I think the answer is sometimes Opposite

    asked by BrainHurts
  41. history

    During Lyndon Johnson's presidency, which of the following legislative or executive measures banned literacy tests?

    asked by Michael
  42. History

    Which archaeological dig was a Folsom kill site where bison remains were found?

    asked by Katt
  43. HISTORY

    If you were one of the new immigrants who arrived in America in the 1880s, it's most likely that you would have been A. German and Lutheran. B. Italian and Catholic. C. Swedish and Protestant. D. Irish and Protestant. I AM BETWEEN A and D can you please

    asked by SANDY
  44. pol 201

    In Roe v. Wade, the Supreme Court located the right to privacy in the

    asked by Anonymous
  45. math

    each square on olivia's chessboard is 11 square centimeters. a chessboard has 8 squares on each side. what is the width of olivia's chessboard?

    asked by syd
  46. physics

    An unstrained horizontal spring has a length of 0.33 m and a spring constant of 209 N/m. Two small charged objects are attached to this spring, one at each end. The charges on the objects have equal magnitudes. Because of these charges, the spring

    asked by Anonymous
  47. Math

    Choose the best description for the real number 34/5 Irrational, because it is a fraction Irrational, because it is a repeating decimal Rational, because it is a fraction Rational, because it is a terminating decimal

    asked by D
  48. math

    If a person walks 21 feet in 7 seconds how long does it take to walk 180 feet

    asked by ava
  49. Math Problem (please help)

    A small software company invests $30,000 to produce a software package that will sell for $64.95. Each unit can be produced for $42.25. How many units must be sold to break even? How many units must be sold to make a profit of $100,000?

    asked by Angie
  50. math

    Geeta bought eggs at Rs 8.40 a dozen. At what price per hundred must she sell them so as to earn a profit of 15 percent?

    asked by khushi
  51. finance

    LaMont Industries had cash flow from operations of $19 300 last year. The depreciation expense was $2 300, interest expense was $600, and taxes were $1 400. They have 40 000 shares outstanding. What is the earnings per share for last year?

    asked by solooloo
  52. Math

    The monthly profit P, in thousands of pesos of a company can be estimated by the formula P(x)= -3x^2+30x+2, where x is the number of units sold per month. Find the number of units that must be sold by the company to maximize its profit and then find the

    asked by Chesca
  53. Geography

    Which geographic feature marks the last natural obstacle for Georgia’s rivers on their way to the Atlantic Ocean? (1 point) the Floridian Aquifer the Valley and Ridge region the Fall Line *** (MY ANSWER) the Marshes of Glynn AM I RIGHT?

    asked by Christina
  54. Math

    •The x-intercepts of the graph of y=f(x) •The real zeros of the function f •The real solutions to the equation f(x)=0 Use the equation f(x)=4x−28 to verify that all three do produce answers that are numerically the same.

    asked by jay
  55. math

    4 notebooks for $7.00 how much for 5 notebooks

    asked by bon
  56. Intro Physics Help

    A runner in a relay race is required to run a distance of 20 m, pick up tbaton, and then turn back to the start. the runner must then run back past the starting point to a location 10 m beyond start, pick up a second baton, turn around and run past start

    asked by Lydo
  57. Math Problem (please help)

    A small fast-food restaurant invests $4,000 to produce a new food item that will sell for $4.59. Each item can be produced for $2.19. (a) How many items must be sold to break even? (Round your answer to the nearest whole number.) items (b) How many items

    asked by Angie
  58. ENGLISH

    can someone read my english essay and correct it for me?

    asked by Neha
  59. finance

    One Materials Ltd. paid $7,500 in dividends and $28,311 in interest over the past year while net working capital increased from $13,506 to $18,219. The company purchased $42,000 in net new fixed assets and had depreciation expenses of $16,805. During the

    asked by solooloo
  60. Science

    A.) A runner is jogging at a steady 6.7 km/hr. When the runner is 3 km from the finish line, a bird begins flying from the runner to the finish line at 20.1 km/hr (3 times as fast as the runner). When the bird reaches the finish line, it turns around and

    asked by Serena
  61. Th

    the area of a regular polygon varies jointly as its apothem and its perimeter. express the area in terms pf apothem a and the perimeter p

    asked by Mary
  62. Physical sciences

    Write down a balance equation of sulphuric acid and sodium hydroxide

    asked by Thandeka
  63. English: Showing Possession

    In my English composition, I wrote the phrase "... my sister and I's favorite CD ..." According to my word processor's spell check there should not be an 's after I. Can 's be used after I? If not how would I show possession in the above phrase?

    asked by Anonymous
  64. English

    To indicate a thought (For example: I'm hungry), do you put quotation marks around the thought as you would do if the thought were spoken out loud, or do you put the thought in italics?

    asked by Z
  65. Physics

    A constructor on worker assisting in the paving of a street drives a heavy roller back and forth over the newly paved area to smooth the asphalt. The section of street being paved is 100 m long and the roller operator drives from the east end to the west

    asked by Kim
  66. HISTORY

    In the new cities of the 1800s, streetcars were to the suburbs and residential neighborhoods as glass and steel were to A. factories. B. palatial mansions of the rich. C. skyscrapers. D. railroad stations. i need some help which answer is correct C or D

    asked by jodi
  67. math

    A runners time in the 100-dash is 32 seconds when rounded to the nearest whole number. Name the fastest and slowest times possible in decimals to hundredth

    asked by Jaylene
  68. Science

    A star's life depends on mass ___ mass=Long life Large mass= ____ life Small mass is long life and large mass is short life?

    asked by Coleson
  69. Spanish

    Good screen names in Spanish for a girl?

    asked by Anonymous
  70. Science

    which statement best describes the benefit of having a universal system of measurement? A. Scientists from different counties can more easily shared and compare data from experiment. B. Scientists who speak difference languages do not have to translate

    asked by chris w
  71. Algebra

    A couple wants to install a squaremirror thathas an area of 500 square inches. to the nearest tenth of an inch, what length of wood trim is needed to go around the mirror.

    asked by Alysa
  72. science

    116In nuclei are produced at the rate of 10 s-1. Calculate the maximum number of 116In nuclei (number in equilibrium) in the sample if the half-life of 116In is 54 m. So far I have come up with ... The half life = 54m x 60 s-1 = 3.24 x 103 s-1 (In2) / λ =

    asked by Ali
  73. Science

    help fastwhich of the following statements incorrectly describes a tool used by scientists? A. A compound light microscope enables a scientist to view objects too unaided eye to see. (B).A beaker is a type of glassware a scientist uses in the lab to record

    asked by chris
  74. Social Studies

    In return for offering the throne to William and Mary, it was demanded that all laws had to be approved by? A: Parliament B: King James C: The Catholic Church D: The Protestant Church My answer is A. Can someone please check if this is right?

    asked by anon
  75. Physics

    Suppose gold bars are made such that they are cubic. If they are made cubic, then there volume is given by V = L3, where L is the length of a side of the bar. The price of any gold bar is directly proportional to its volume, so the price of the gold is P =

    asked by Kimmy
  76. Math

    write an algebraic expression for 43 more than t 43 + t

    asked by Donna
  77. Life orientation

    (a) Why is it important to first describe the problem before you start to look for a solution (b) critically evaluate how gender and culture have an effect on assertive behavior

    asked by Plz help
  78. MATH

    What is my number if the hundreds digit is less than the tens digit and less than the ones digit and the hundreds digit is even and the tends digit divided by the hundreds digit is 5 and the product of two of the digits is 6 and it has two odd digits and

    asked by NANCY
  79. bush

    if a concert ticket cost 48 dollars that is 6 times more then a circus ticket

    asked by carrie
  80. stats

    what are the mean and standard error when using central limit theorem for dichotomous variable

    asked by mary
  81. Geography

    Is Alaska, Greenland, and Antarctica covered mainly in ice?

    asked by Kyralle
  82. Math

    The area of a rectangular hallway is 120 square feet. If the length and the width are both composite numbers what are the possible dimensions of the hallway? Would it be 40 by 4?

    asked by Mayra
  83. algebra

    mineral=aluminite, cryptohalite, fluorannite, graphite, titanium, ziesite density (g/cm^3)=1.68, 2 1/100, 3 7/40, 2.16, 4 2/5, 3.86 1. explain why the densities cannot be represented using set-builder notation. 2. use interval notation to describe a set of

    asked by cece
  84. physics

    The pressure of a gas in a container is estimated to be the force exerted per cross-sectional area. If a factor F=(20.0+/-0.5)N.acts on a rectangular cross-section of the container with dimensions x=(5.0+/-0.5). Calculate fractional change in pressure and

    asked by Nonhlanhla
  85. Chem Help

    what could be the advantage of carrying out a distillation under vacuum as compared to atmospheric pressure? thank you!

    asked by Bailey
  86. finance

    You will be receiving $5,000 from your family as a graduation present. You have decided to save this money for your retirement. You plan to retire thirty years after graduating. How much additional money will you have at that time if you can earn an

    asked by solooloo
  87. finance

    The One Cafe has an operating cash flow of $78,460, a depreciation expense of $8,960, and taxes paid of $21,590. What is the amount of the cash flow from assets? A partial balance sheet is as follows: Beginning Balance Ending Balance Current assets

    asked by solooloo
  88. Science

    which statement best describes the benefit of having a universal system of measurement? A. Scientists from different counties can more easily shared and compare data from experiment. B. Scientists who speak difference languages do not have to translate

    asked by chris
  89. physics

    convert 6.5*10^-3 g.cm/h to kg m/s 6.5*10^-3*10^-2/3600s=1.8*10^-8

    asked by xitshembiso
  90. AP US History

    Is columbus letter reliable(Reliability)? why or why not?What is the point of view?

    asked by Laila
  91. physics

    A daredevil is shot out of a cannon at 36.5◦ to the horizontal with an initial speed of 36.1 m/s. A net is positioned a horizontal distance of 25.7 m from the cannon. At whatheight abovethecannon shouldthe net be placed in order to catch the daredevil?

    asked by Anonymous
  92. physics

    convert 2*10^20 am answer 2*10^20*10^-18=2*10^2m

    asked by xitshembiso
  93. physics

    convert 2*10^20am answer 2*10^20*10^-18=2*10^2m

    asked by xitshembiso
  94. History

    Which lake was created by Pensacola Dam, the first hydroelectric dam in Oklahoma, which was completed in 1940?

    asked by Katt
  95. maths

    communicate mathematical ideas does -|-4|=|-(-4)|? justify your answer. I need help how to do this. thanks

    asked by Ashber
  96. algebra

    1. is (0,3) a solution to the equation y=x+3 (1 point) yes** no 2. is (1,4) a solution to the equation y=-2x (1 point) yes no** 3. (4,0),(3,-1),(6,3),(2,-4) Which are solution to y=x-4?Choose all correct answers. (2 points) (6,3) (4,0)** (3,-1) (2,-4)** Im

    asked by blah
  97. Geographic information system

    How would you find the answer to this? Assume that two two-by-two source rasters contain the following values: Raster 1: 7 14 10 36 Raster 2: 5 2 2 5 What would be the sum of all pixel values in the raster that would be created using the following map

    asked by Lana
  98. Math

    Suppose that y varies inversely as t he cube of x. If y is 1/2 when x is 2 , find the constant of variation and variation equation

    asked by Mary
  99. Idk..

    What does 'puex to voter pour moi svp' mean

    asked by Anonymous
  100. Criminal justice

    Informal probation may be the disposition of choice when a girl attends school regularly, obeys her parents' directions and restraints, and is before the court on a marginally delinquent offense except. Even so, she is not suitable for informal probation

    asked by Amy
  101. physics

    how does the center of gravity affect posture? answer...when a person is carring a load a center of gravity changes to increase stability that person will bent

    asked by xitshembiso
  102. Physics

    Maria is undergoing physical therapy for a back injury. Her therapist instructs her to use the power-glide incline. When using the incline, Maria pushes with her legs, raising her torso 30 cm up the incline and then she release to drop back down again. She

    asked by Kim
  103. science

    how do you calculate the missing variable in work and power;example:you must exert a force of 4.5N on a book to slide it across a table .if you do 2.7J of work in the process,how far haveyou moved the book

    asked by jimmy
  104. Physics ...

    116In nuclei are produced at the rate of 10 s-1. Calculate the maximum number of 116In nuclei (number in equilibrium) in the sample if the half-life of 116In is 54 m. So far I have come up with ... The half life = 54m x 60 s-1 = 3.24 x 103 s-1 (In2) / λ =

    asked by Ali
  105. algebra 2

    true or false every member of the interval (0,8] is a natural number

    asked by taylor
  106. algebra

    identify one rational number and one irrational number that are members of the interval (-8,8)

    asked by sam
  107. math

    What is the value if the underlined digit in the number 410,327?3

    asked by damian
  108. algebra

    confused mom can someone please help me. Solve. x/5-x/2=21 what is the value of x? a)-70 b)-7 c)7 d)70 Thanks to anyone who can help.

    asked by Kandy
  109. Business statistics

    For a batch of apples containing 100 apples the mean mass is 8 gm. For half number of apples selected from 100 apples the mean mass is 10 gm. Find the mean mass of other half number of apples

    asked by Aye
  110. History

    Why were crops such as Wheat and corn susceptible to insect pests?

    asked by Mel
  111. Business statistics

    For a batch of apples containing 100 apples the mean mass is 8 gm. For half number of apples selected from 100 apples the mean mass is 10 gm. Find the mean mass of other half number of apples

    asked by Aye
  112. History

    Although settlers valued democracy, they often? A. rejected controls over government B. elected weak legislatures C. disregarded the rights of minorities D. failed to vote I chose D.

    asked by Mel
  113. Accounting

    What is the journal entry for a $10,000 deposit in exchange for $10,000 worth of common stock ? Would I name that account common stock or cash ? Thanks!

    asked by Morgan
  114. science

    _______ describes all the processes associated with the discharge of magma, hot fluids, ash, and gases.

    asked by India
  115. Math

    The first digit of two different numbers is in the hundreds millions place. Both numbers contain the same digits. Can you determine the greater of the two numbers and Explain.

    asked by Deborah
  116. Physics

    A red ball is thrown down with an initial speed of 1 m/s from a height of 27 meters above the ground. Then, 0.6 seconds after the red ball is thrown, a blue ball is thrown upward with an initial speed of 24.5 m/s, from a height of 0.7 meters above the

    asked by Luis
  117. Calculus

    List at least five scenarios in real life where knowing the average or instantaneous rate of change could prove beneficial?

    asked by Jacke
  118. math

    if a vitamin cost 29.50 and you paid 14.75 what percentage is that

    asked by jd
  119. Algebra 1

    What are Five,ways to wright 2 more than x ??????????????????????????????????

    asked by Callie
  120. History

    In suburban areas, the earliest cities were located on waterfronts. How might new changes in transportation affect the location of the cities. I know new transportation meaning automobiles, streetcar lines, etc.

    asked by Mel
  121. Into to business

    Students 400 males 300 females100 what is the percent of change

    asked by Amanda Alkananey
  122. Into to business

    Students. 500 males 200. Females 300 what'sthe percentage of change

    asked by Amanda Alkananey
  123. math- help needed badly

    a pilot entering a bay on course 60.3 degrees at the speed of 12 knots sees a light bearing 37.3 degrees true, and 20 mins later he sees it bearing 20 degrees true. if he keeps the same course and speed,(a)when will he be nearest to the lighthouse and how

    asked by rhinechilde
  124. Financial maths

    Tim buys unit trusts for R25 000 after eight years he sells them R63 000 (a)calculate a compound interest rate that would yield the same return (b)calculate a simple interest rate that would provide the same growth

    asked by Lesedi
  125. Financial maths

    Palesa buys a house for R850 000 she sells the house six years later for R1,2 million calculate a compound interest rate that would provide the same growth

    asked by Lesedi
  126. Math

    On average, a shooter can hit his target one time in four. If he fires 4 shots in a row, what is the probability that he will hit his target?

    asked by Yulonda Francis
  127. spanish 1

    all you need to know about remedies, when it was invented their value etc.

    asked by reina