# Kelvin

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.

2. ## 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)

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.

4. ## 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

5. ## 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

6. ## 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

7. ## 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#

8. ## math

Mr. Wilson and one man got on a streetcar. At the secong stop three people got on. At the third stop, three people got on and one got off. At the fourth stop, three got off. At the fifth stop, six people got off. At the sixth stop, one-half of the

9. ## 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

10. ## 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

11. ## Binomial and Poisson distribution

A machine produces ribbon in which flaws occur randomly at an average rate of one flaw in 100m. Find the probability that there are 3 or more flaws in a randomly chosen 200m of ribbon. Find the length of ribbon such that the probability that it contains no

12. ## algebra

Solve x: 2 over 5x+2=10

13. ## 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

14. ## math

Two towns P and Q lie on the same parallel latitude such that P is due east of Q. When local time at Q is 9.50am , the local time at P is 3.12pm. ( a) Find the longitude difference between P and Q (2mks) ( b) Given that the longitude of P is 52°E , find

15. ## 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)

16. ## math

#please people i need your help over this question# How much should George be loaned by the bank that offers an interest of 23% if he returned an interest of sh 1,311,000 after 3 years?

17. ## math

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

18. ## 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

19. ## 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#

20. ## math

The three co-ordinates of a rectangle are A(3,-4), B(-1,4), C(4,2).Find the fourth co-ordinate #Plz guyz may you help me out this question

21. ## 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

22. ## math

write zero in roman numeral.

23. ## math

When the rate of interest in the bank is increased from 5% to 6% per annum,Gerald deposits Tsh 12,000 more into his account.If annum interest now received by him is Tsh 1100 more than that before,find his original deposit.**please anyone to help me with

24. ## math

find the next number in the following sequence 110,98,87,71,___ please i need someone to give an answer

25. ## 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

26. ## math

A can finish a work in 24 days , B in 9 days and C in 12 days. B and C start the work but are forced to leave after 3 days.The remaining work was done by A in ? any idea please i used work rate concept but i did not reach to the answer

27. ## 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

28. ## 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???

29. ## 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?

30. ## 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?

31. ## 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?

32. ## 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

33. ## pure math

2logy=log2+logx

34. ## MATH

Coach Johnson is 10 years older than Tim. When Tim started football 3 years ago, Coach Johnson was twice his age. How old is Tim now?

35. ## 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

36. ## 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

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

38. ## Chemistry

If 197.1 mL of SO3 is collected (measured at 324 K and 52.6 mmHg) what is the percent yield of the reaction?

39. ## Civics

Which of the following is a requirement for naturalization in the United States

40. ## english and science

Who can help me out? Explain how analytical chemistry studies relate to development issues and goals of the world?

42. ## life orientation

name and explain the laws that protect the citizens against xenophobia

43. ## biology

function of liver

44. ## math

Please guys help me this question to get the answers. How many 1/3 are there in 2 1/2?

45. ## life orientation

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

46. ## 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?

47. ## math

#please people i need your help over this question# How much should George be loaned by the bank that offers an interest of 23% if he returned an interest of sh 1,311,000 after 3 years?

48. ## math

one lady borrowed sh. 100,000. If she is required to pay an interest of 5% of the borrowed cash every month, how much money will she pay after fove months? #please people help me this question#

49. ## 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?

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. What formula can be applied between (a) SA = 2pie*r*h + 2pie*r^2 (b)SA = 2pie*r*h State the reason why you

51. ## 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.

52. ## math

#Please people help me the solution of this question# Ali was born 29th February 1980. How many birthdays he celebrated until 2003?

53. ## math

#please people help me the solution of this question# Change 7380 seconds into hours and minutes.

54. ## math

#please people help me the solution of this question# Change 7380 seconds into hours and minutes.

55. ## math

Between 1:2:3 and 3:4:5 which is greater?

56. ## 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.

57. ## 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?

58. ## 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?

59. ## 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

60. ## math

What is the next number in the following sequence: -4, -1, 1, 2, _

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?

62. ## math

Please guys help me out this question #What is 1/4 in 24?

63. ## 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

64. ## math

A circula garden whose radius is 14 m is fenced by posts which are 6 m far apart from each other.Find the number of posts which will be required to fence the circular garden.

65. ## 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

66. ## 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?#

67. ## math

By what percentage is 5 greater than 4?

68. ## math

please i need your help guys. A rectangular cake measuring 120 cm by 72 cm is to be divided into square pieces of the same size and the largest size possible. What will be the measure of the side of each square and how many pieces will there be?

69. ## 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

70. ## 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?

71. ## 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.

72. ## 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?

73. ## 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#

74. ## 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

75. ## math

Plz i need your help how to solve and arrive to the answer# A richman wants to earn one million shillings in 10 years. What amount should he invest in the bank if the interest rate is 2.5% per year?

76. ## 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

77. ## 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

78. ## 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?

79. ## 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

80. ## 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?

81. ## math

Please anyone to help me# Write the following time using roman numerals. a. 5:40 am b. 6:00 pm

82. ## 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

83. ## 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

84. ## 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

85. ## math

#Please guy i need your help over this question how to do it. 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.

86. ## math

If I will be given a loan of sh. 500000 and required to pay a monthly interest of 5%. How much will I pay after 8 months? #Please i need your help guyz#

87. ## 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#

88. ## 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#

89. ## math

If the difference between 21 and k is 48. Find the value of K #Please anyone to help me this question# Can the value of K be -27.

90. ## 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.

91. ## math

A bus fare from Arusha to Dar es salaam is sh. 12,000. If the bus goes two trips carrying 7 passengers, how much will be collected after completing those trips? #Please guys anyone to help me this question i need to attend the test#

92. ## 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#

93. ## 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*

94. ## 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??

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? *

96. ## math

Ali rode a bicycle from town A to town C through town B as follows.He rode from A to B a distance of 45 km in 3 hours and then rested for 1hr and 1/2 hr.From B he rode to C a distance of 20 km in 1hr and 1/2 hr. Find the average speed riding #Please guys

97. ## math

Ali rode a bicycle from town A to town C through town B as follows.He rode from A to B a distance of 45 km in 3 hours and then rested for 1hr and 1/2 hr.From B he rode to C a distance of 20 km in 1hr and 1/2 hr. Find the average speed riding #Please guys

98. ## 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

99. ## 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