Kelvin

Most popular questions and responses by Kelvin
  1. Further maths

    In an examination 31 candidate passed Chemistry,29 passed Physics 3 failed both subjects.lf 50 candidates sat for the examination how many of them passed Chemistry only.

    asked on September 24, 2017
  2. math

    The books for Mathematics, Geography and Science in a school are in the ratio 5:7:8. There is a proposal to increase these books by 40%, 50% and 75% respectively. What will be the ratio of the increased books? #Please anyone who can help me out with the

    asked on December 18, 2017
  3. chemistry

    If methane at a pressure of 3.2 atm and at 21 °C is introduced into a container, the gas be heated to ______°C to increase the pressure to 12 atm.

    asked on March 5, 2013
  4. life orientation

    name and explain the laws that protect the citizens against xenophobia

    asked on April 19, 2019
  5. math

    i need your help guys #A fruit vendor bought 600 apples for $ 4800. He spent $ 400 on transportation. How much should he sell each to get a profit of $ 1000?

    asked on April 30, 2017
  6. Physics

    A 58 kg woman is ice-skating toward the east on a frictionless frozen lake when she collides with a 94 kg man who is ice-skating toward the west. The maximum force exerted on the woman by the man during the collision is 210 N, west. Take east to be the

    asked on February 25, 2015
  7. chemistry

    After 273 m3 of ethylene oxide is formed at 748 kPa and 525 K, the gas is cooled at constant volume to 293 K.The new pressure is _____kPa

    asked on March 5, 2013
  8. MATH

    Maya and Sally were the two finalists in a singing competition. The person with the most votes from the audience was chosen as the winner. Sally received 25% of the total votes and lost by 62,500 votes. No person in the audience was allowed to vote more

    asked on July 12, 2011
  9. math

    Which type of graph is best suited for displaying the number of hours spent studying by students in different age ranges?

    asked on March 9, 2012
  10. pre-calc

    Find the area of a triangle with sides of length 5 and 8 and included angle 74°. (Round your answer to one decimal place.)

    asked on March 24, 2012
  11. Calculus

    An ice cube is melting such that the side of the cube is decreasing at the rate of 1/4 t^2 cm / min. It is given that the side of the cube is 8cm at the start of the experiment. Calculate the length of the side of the cube when t = 4? ( answer 2 2/3 cm)

    asked on October 22, 2011
  12. biology

    function of liver

    asked on March 9, 2019
  13. physics

    if the shortest lenggth of the tube for resonance is 0.1m and next resonance length is 0.35m what is the frequency of the vibration

    asked on May 30, 2013
  14. Trigonometry

    What representations do not change the location of the given point (7,140°)?

    asked on January 29, 2012
  15. math

    Mrs. Cason gives her class a spelling quiz every Monday, a math quiz every other Monday and a history quiz every third Monday . Sally smarty is in Mrs. Carson's class. She received a grade of 100% on all three quizzes today. How long will it be before she

    asked on December 7, 2009
  16. math

    Maya and Sally were the two finalists in a singing competition. The person with the most votes from the audience was chosen as the winner. Sally received 25% of the total votes and lost by 62,500 votes. No person in the audience was allowed to vote more

    asked on July 12, 2011
  17. Maths

    (1) A cone has height of 8cm and circular radius 6cm calculate (a) It's Volume (b) It's Slant Height (c) The Curved Surface Area (d) The Total Surface Area

    asked on June 16, 2016
  18. Chemistry 1010

    How many grams of Ag2CO3 will precipitate when excess K2CO3 solution is added to 70.0 mL of 0.692 M AgNO3 solution? 2AgNO3(aq) + K2CO3(aq) --> Ag2CO3(s) + 2KNO3(aq)

    asked on January 8, 2015
  19. chemistry

    According to molecular view, kinetic energy, what happens when 2 tablespoons each of water, methylated spirit and petrol are put in an open container separately in relation to time and the rate of vaporisation?

    asked on April 26, 2012
  20. college

    For the reaction NO(g) + O3(g) „_ NO2(g) + O2(g) The frequency factor A is 8.7 X 1012 s-1 and the activation energy is 63kJ/mol. What is the rate constant for the reaction at 75 ¢XC?

    asked on May 14, 2009
  21. Trigonometry

    What representations do not change the location of the given point (7,140°)?

    asked on January 29, 2012
  22. math

    A store offers a 15% discount on all items in the store during a sale. All store employees get an additional 10% employee discount. In the equation below, C represents the cost of an item for an employee including tax, and x represents the original price

    asked on July 12, 2011
  23. math

    The age of Mwenda is 3/5 of that of his sister.If 20 years ago the age of Mwenda was 2/5 of that of his sister then. Find the present age of Mwend. #Please guys help me this question#

    asked on March 7, 2018
  24. chemistry

    According to molecular view, kinetic energy, what happens when 2 tablespoons each of water, methylated spirit and petrol are put in an open container separately in relation to time and the rate of vaporisation?

    asked on April 26, 2012
  25. chemistry

    According to molecular view, kinetic energy, what happens when 2 tablespoons each of water, methylated spirit and petrol are put in an open container separately in relation to time and the rate of vaporisation?

    asked on April 26, 2012
  26. math

    Mrs. Cason gives her class a spelling quiz every Monday,and a history quiz every third Monday . Sally smarty is in Mrs. Carson's class. She received a grade of 100% on all three quizzes today. How long will it be before she again has to take all three

    asked on December 7, 2009
  27. Science

    Explain the factors that affect the intensities of absorption in IR spectroscopy. #Please anyone to help me with explanation i have to attend test by tomorrow help me out.

    asked on January 1, 2018
  28. math

    Please anyone to help me solve this question A piece of copper wire is 52 2/3 m long. If each piece has been cut of 3/4 from it. What length will remain after cutting pieces? math question

    asked on July 22, 2018
  29. chemistry

    If methane at a pressure of 3.2 atm and at 21 °C is introduced into a container, the gas be heated to ______°C to increase the pressure to 12 atm. is it 352???

    asked on March 5, 2013
  30. math

    #Plz i need your help guys (the answer for this question)# If you deposit sh. 100,000 in a bank which gives 12% interest rate per year. How much will you earn after 1 year and 6 months? Steve yesterday at 5:42am That would be 100000 * .12 * 1.5 kelvin

    asked on April 29, 2018
  31. math

    find the next number in the following sequence; 1/2,2/3,3/5,5/8, _ *please i need your assistance guys for this question* My idea is as follows denominator part for the given fraction =1+2 =3 then 2+3 =5, 3+5=8,therefore the next denominator part = 5+8 =13

    asked on July 2, 2017
  32. math

    A cow is tied with a rope of length 14 m at the corner of rectangular field measured 20 m by 16 m. Find the area of the field in which the cow can graze. #anyone to help me with proper and systematic step by step solution

    asked on April 19, 2017
  33. Math

    This year my teacher read us the book The Phantom Tollbooth, and since then I've been having strange dreams about drving in usuaual places and paying tolls unusual characters.Last night I dreamed about highway in the clouds near the mythical Mt. Olympus.

    asked on December 13, 2009
  34. math

    Please i need a help also to this question Mwajuma needs 70% to receive a grade C in a certain subject.If the exam has 120 questions and each question carry one mark(1%), how many questions should she answer correctly?

    asked on May 20, 2018
  35. Chemistry

    The molar enthalpy of combustion of demand is -6.78KJ/mol.What mass of decane would have to be burned in order to raise the temperature of 500ml of water from 20 degrees Celsius to 55 degrees celsius. I tried using ndeltaH=mcdeltat. But it didn't work.

    asked on October 17, 2016
  36. physics

    if the shortest lenght of the tube for resonance is 0.1m and next resonanc length is 0.35m what is the frequency of the vibration.

    asked on May 30, 2013
  37. Algebra(urgent)

    a boat moves through still wather at x kilometers(km) per hour. it travels 24km up stream against a current of 2km per hour and then returns with the current. The rate upstream is x-2 because the boat moves against the current and the rate downstream is

    asked on March 31, 2011
  38. math

    5gal 1qt - 2qt 1pt= _gal _qt _pt

    asked on November 29, 2014
  39. Algebra

    a boat moves through still wather at x kilometers(km) per hour. it travels 24km up stream against a current of 2km per hour and then returns with the current. The rate upstream is x-2 because the boat moves against the current and the rate downstream is

    asked on March 31, 2011
  40. science

    In the process called fluorescence, some substances absorb photons of one kind of radiation (e.g) ultraviolet radiation), and give out photons of a different kind (e.g visible light). When infrared radiation falls on these materials, visible light is not

    asked on March 6, 2007
  41. math

    *Please i need the help people about this question* In a school there is 15% more boys than the girls. If the number of girls is 30, find the number of boys in the school.

    asked on July 23, 2018
  42. math

    Please anyone to help the solution and the answer# A piece of copper wire is 52 2/3 m long. If each piece has been cut of 3/4 m from it. What length will remain after cutting pieces?

    asked on July 23, 2018
  43. math

    Please anyone to help me solve this question A piece of copper wire is 52 2/3 m long. If each piece has been cut of 3/4 m from it. What length will remain after cutting pieces?

    asked on July 22, 2018
  44. maths

    A plane leaves an airport x,20-60E and 36-80N and flies due south along the same longitude for 8hours at the rate of 1000km/h to another airport Y,20-60E and titaS.the plane then flies west to another airport Z for 8hours at the same speed. Calculate to

    asked on September 6, 2016
  45. Chemistry

    Aspirin can be prepared in the chemistry laboratory by the reaction of salicylic acid with acetic anhydride. What volume of acetic anhydride is required to produce one killogram of aspirin assuming 100%yield

    asked on February 11, 2016
  46. 6th Grade Math

    The farmers boy is going to market again. This time he's taking his faithful dog, two geese,and three bags of corn. He again has to cross the river,but this time he can only carry two items across at a time. He knows if he leaves tham alone, the dog will

    asked on December 15, 2009
  47. high school

    U.S GORVEMENT ENFORCEMENT OF EVIRONMENTAL REGULATIONS HELPS REDUCE HEALTH PROBLEM RELATED TO ENVIRONMENTAL POLLUTION. HOW DOES THIS HELP PROMOTE ECONOMIC GROWTH AND STABILTY?

    asked on July 9, 2009
  48. college - Advertising

    Hi there, What is the criticisms of advertising? Any sites that talk about the criticisms of advertising?

    asked on February 11, 2009
  49. math

    Daladala fare from tegeta to bunju is sh 450/= for each passenger.How much will be collected for a trip if there is 18 seats which are occupied in full by passengers. Please people help me this question is it 450×2×18 (because trip meaning go and return)

    asked on October 18, 2018
  50. math

    please guys help me this question, how to solve it. Calculate the total surface area of a hollow cylinder whose radius is 15 cm and height is 20 cm.

    asked on August 16, 2018
  51. math

    Please guys i need your help tomorrow i have a test. *How many plant should my uncle need to plant around his farm of a circular shape of a radius 140 m, If the distance between plants is 50cm?

    asked on May 20, 2018
  52. math

    #Plz i need your help guys (the answer for this question)# If you deposit sh. 100,000 in a bank which gives 12% interest rate per year. How much will you earn after 1 year and 6 months? Steve today at 5:42am That would be 100000 * .12 * 1.5 kelvin today at

    asked on April 28, 2018
  53. math

    The age of Mwenda is 3/5 of that of his sister.If 20 years ago the age of Mwenda was 2/5 that of his sister then. Find the present age of Mwend. #Please guys help me this question#

    asked on March 7, 2018
  54. math

    Three subjects Geography, Science and English in the library are in the ratio of 5:7:8 which they had increased by 20%,40% and 50%. Find the ratio of increased books # Please guys can you assist me this question#

    asked on September 26, 2017
  55. math sets

    out of 320 students at a university,190 taking math,235 taking chemistry and 120 taking physics.125 are taking both chemistry and math,95 taking both chemistry AND PHYSIC,55 TAKING BOTH MATH AND PHYSICS.HOW MANY ARE TAKING ALL THE THREE SUBJECTS

    asked on January 16, 2017
  56. chem

    A sample of H2(g) expands adiabatically and reversibly from a state 1 where p1 = 200000Pa,V1 = 0.002m3 and T1 = 300K to a state 2 where V2 = 0.004m3.Assume the gas to behave as an ideal gas calculate the final temperature and its pressure.Use the constant

    asked on November 8, 2016
  57. math:age

    salima's current age is half that of her uncle.9 years ago the age of salima was 1/3 the current age of her uncle. Find the current age of Salima

    asked on July 23, 2016
  58. math

    find the arc length of the curve y = lnx for x = 1 to x = square root of 8

    asked on September 1, 2015
  59. math

    The gym is sponsoring a basketball elimination tournament with 16 teams entered. Winner play winners until only one team is left. What is the total number of games that must be played?

    asked on December 3, 2009
  60. life orientation

    Identify and explain four types of risk behavior amongst teenagers by means of examples

    asked on September 18, 2018
  61. math

    #please guys help me this question# Three people can wash clothes in 13 hour, 14 hour and 14 hour. If they started together at 8:30 am, at what time will they finish this work together?

    asked on July 7, 2018
  62. math

    By what percentage is 1/40 greater than 1/50? #Please guys help me please this question.#

    asked on May 25, 2018
  63. math

    please people i need your help. *Equal squares as large as possible are drawn on a rectangular board measuring 50 cm by 70 cm. Find the size of the square. Steve today at 8:18pm assuming you mean to cover the entire board, then since GCD(50,70)=10 The

    asked on May 20, 2018
  64. math

    please people i need your help. *Equal squares as large as possible are drawn on a rectangular board measuring 50 cm by 70 cm. Find the size of the square.

    asked on May 20, 2018
  65. math

    Guys please i need your help i am not getting the answer over the following questions. 1) Maria banked sh. 95,000 in her bank account. If the bank gives a simple interest of 17% per year, how much will she get after 3 years? 2) If Mollel got sh. 230,000

    asked on May 11, 2018
  66. math

    #Plz i need your help guys (the answer for this question)# If you deposit sh. 100,000 in a bank which gives 12% interest rate per year. How much will you earn after 1 year and 6 months?

    asked on April 27, 2018
  67. Biochemistry UB Cameroon

    If 8A pass for 2minutes at the cathode(where the following reaction takes place, Ag+ + e- --->Ag) how many grams of silver metal are passed onto the cathode??

    asked on September 10, 2017
  68. math

    16 persons need 56 kg of rice in 1 week. How much rice will be needed by 24 persons in four weeks? ^please anyone over here ryt now may you help me to arrive to the final answer^ 24×(56/16)× 4 math - kelvin today at 2:22pm i had the this idea but i

    asked on June 29, 2017
  69. math

    How many minutes are there between 11:40 night and 8:10 morning? please help me out

    asked on June 29, 2017
  70. math

    A woman deposited Tsh 480000 in CRBD which charges an interest of 15% per annum.How much did she get after six months?# anyone to help me plz#

    asked on February 21, 2017
  71. braindrain

    some have more than 100 some none but matiangi has two

    asked on December 16, 2016
  72. math

    Write in italic numeral 1959. #any one to help me please***

    asked on August 17, 2016
  73. math

    Two boys,John and Jackson are running at different speeds of 30 km/hr and 18 km/hr and in opposite directions are 10 km apart.If they both start running at exactly 11:50 pm,at what time will John pass Jackson?Anyone to help

    asked on August 1, 2016
  74. physics

    if a load 1kg streches a cordby 1.2cm.what is the force constantof the cord?

    asked on November 6, 2014
  75. Math

    (x^2+y^2)^2=4(x^2-y^2) Equation of a lemniscate curve

    asked on January 26, 2013
  76. Pre-Calc

    Find the values of the trigonometric functions of è from the information given. (sin è, cos è, csc è, sec è, cot è) tan è = −2, sin è > 0

    asked on March 24, 2012
  77. Algebra

    Using complete sentences, explain how to graph y = x - 2 using the slope-intercept method.

    asked on July 24, 2011
  78. algebra

    Solve x: 2 over 5x+2=10

    asked on July 14, 2011
  79. math

    If x represents the total number of bags a person checks and each person checks more than two bags, the equation below can be used to determine C, the total fee for all the bags. 20 + 25 + 50(x - 2) = C Arianna paid a total of $145 to check all her bags on

    asked on July 12, 2011
  80. 192

    a pizza has a radius of 9inches. the pizza is divided into sections. one of the section has a central angle with a measure of 60 degrees wat is da area of this section of pizza? what happens to the area of the sector if u double the central angel? how much

    asked on April 11, 2011
  81. math

    A fireman stood on the mioddle step of a ladder, shooting water into a burning building . As the smoke lessened, he climbed up three steps and continued his work. the fire got worse,so he had to go down five steps. Later he climbed up the last six steps

    asked on December 3, 2009
  82. college - economics of china

    "Hi there! Can you tell me about economics of China? Can you suggest any credible source that I can look up for those information?

    asked on January 22, 2009
  83. math

    #Please guys help me how to sole this question# A man borrowed sh. 40,000 from NMB bank which charges an interest rate of 12% for 3 years. How much will a man pay after 3 years?

    asked on August 22, 2018
  84. math

    please guys help me this question, how to solve it. Calculate the total surface area of a hollow cylinder whose radius is 15 cm and height is 20 cm. (a)3297 cm^2 (b)1884 cm^2 (c) 3768 cm^2 State why you choose a,b or c?

    asked on August 16, 2018
  85. math

    please guys help me this question, how to solve it. Calculate the total surface area of a hollow cylinder whose radius is 15 cm and height is 20 cm. What formula can be applied between (a) SA = 2pie*r*h + 2pie*r^2 (b)SA = 2pie*r*h State the reason why you

    asked on August 16, 2018
  86. math

    #Please guys i need your help for this question# Sample charges: Greeting telegram on a special code;50 cents Ordinary telegram costs shs 3 for 10 words and each extra word at 30 cents. Find the cost of the following telegram. CHARLES MUSHI BOX 123 MUSHI

    asked on June 1, 2018
  87. math

    Fupi used 0.2 of his salary,sh 32,800 per month for school fees,quarter of the remained amount,he deposited at the bank and the rest amount used for other expenses.How much was used for other expenses? #Please guys help me this question?# Steve yesterday

    asked on May 29, 2018
  88. math

    How many plant should my uncle need to plant around his farm of a circular shape of a radius 140 m, If the distance between plants is 50cm? #Please guys i need your help#

    asked on May 19, 2018
  89. math

    Mr. Ismail invested sh. 36,000 in the bank which gives an interest of 20% per year. After how long will he get sh. 43,200? #please people help me this question how to arrive to final answer. Also i need to know if sh. 43,200 is either the total amount of

    asked on April 23, 2018
  90. math

    #Anyone to help me this question# If 6 men can take 8 hours to complete a job for 5 days. How long will 4 men finish the job if they use 6 hours?

    asked on April 11, 2018
  91. math

    Guys help me this question. four yrs ago, Katie was twice as old as Anne was then. In 6 yrs, Anne will be the same age that Katie is now.How old is each now

    asked on April 7, 2018
  92. math

    Please people i need your help whoever knows# Mrs Ally went to the market with sh.10,000 to buy the following items; 5 kg of rice @ sh. 600, 2 kg of meat @ sh. 2000, 2 heaps of onions @ sh. 150, 2 kg of sardines @ sh.700 and bus fare sh. 300 @ journey. How

    asked on April 7, 2018
  93. math

    Three subjects Geography, Science and English in the library are in the ratio of 5:7:8 which they had increased by 20%,40% and 50%. Find the ratio of increased books # Please guys can you assist me this question#

    asked on September 25, 2017
  94. math

    Three people can wash clothes in 1/3 hrs, 1/4 hrs and 1/4 hrs. If they started together at 8:30 am, at what time will they finish this work together? *Please anyone to help me out this question*

    asked on September 19, 2017
  95. math

    The distance between two towns P and Q is 390 km. John left town P at 7:30 am and travelled towards town Q at an average speed of 60 km/hr. Half an hour later Patrick left town Q and travelled towards town P at the same speed. At what time did they meet? *

    asked on September 4, 2017
  96. math

    If a trapezium was drawn such that it has got two right angled triangles,why the area of that trapezium will differ if someone is considering the areas of two right angled triangles lastly he/she add to obtain the total areas from the one who will use the

    asked on July 17, 2017
  97. math

    9 men dig a farm for 5 days.How many days will 6 men take into finish the same farm?

    asked on May 18, 2017
  98. math

    Find the difference between the sum of even numbers between 100 and 110 and the product of prime numbers between 20 and 30. #anyone to help me out

    asked on May 18, 2017
  99. Social Sutdies

    What are answers to week 26 for forth grade

    asked on April 21, 2017
  100. math

    write zero in roman numeral.

    asked on April 11, 2017

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