ruth

Popular questions and responses by ruth
  1. Maths

    Two boats A and B left a port C at the same time on different route .B travelled on a bearing of 150 degree and A travelled 8km and B had travelled 10km ,the distance between the Two boats was found to be 12km .calculate the bearing of A's route from C.

    asked on June 13, 2017
  2. Pre calc

    evaluate the expression under the given conditions. cos(θ − ϕ); cos(θ) = 5/13, θ in Quadrant IV, tan(ϕ) = − square root15,ϕ in Quadrant II Anyone know how to do this I have never been this confused in my life

    asked on April 11, 2017
  3. Geography

    What is the relation between geography and chemistry

    asked on October 19, 2011
  4. maths

    Three bags of wheat,two bags of corn, and one bag of oats weigh the same as one bag of wheat,one bag of corn and five bags of oats,if two bags of corn and one bag of oats weights 25 pounds and one bags of corn weights 10 pounds,How much does one bag of

    asked on October 8, 2016
  5. Econ/stats

    The following data represent the number of flash drives sold per day at a local computer shop and their prices. Price (x) Units Sold (y) $34 3 36 4 32 6 35 5 30 9 38 2 40 1 a. Develop a least-squares regression line and explain what the slope of the line

    asked on April 29, 2012
  6. biology

    .A ______________ _ is a signal to which an organism responds

    asked on December 27, 2010
  7. Algebra

    A 12' ladder leans against a wall at 68 degree angle of elevation. Find the distance from the ladder's base to the wall.

    asked on September 14, 2013
  8. Chemisty

    How do i convert 0.0024 to scientific notation

    asked on January 11, 2010
  9. physics

    A stunt flier is moving at 15m/s parallel to the flat ground 100m below,how large must the distance x from plane to target be if a sack of flour released from the place is to strike the target?

    asked on October 8, 2017
  10. physics

    Helium gas occupies a volume of 0.04 m 3 at a pressure of 2 x 10 5 Pa (Nm -2 ) and temperature of 300 K. Calculate (i) the mass of the helium. (ii) the r.m.s. speed of its molecules. (iii) the r.m.s. speed at 432 K when the gas is heated at constant

    asked on October 24, 2016
  11. Physics

    7. In a meeting room, there are chairs, a table, and people. Which of these things has a temperature a) lower than, b) greater than, or c) equal to the temperature of the air?

    asked on April 27, 2010
  12. physics

    a conducting loop consisting of a half circle of radius r=0.2m and three straight sections the half circle lies in a uniform magnetic field B that is directed out of the page the field magnitude is given by B=(4t^2 + 2t + 3)T .w/r t is in second. an ideal

    asked on March 31, 2016
  13. physics

    an electron moves in the plane of paper toward the top of the page .a magnetic field is also in the plane of the page and directed toward the right .what is the direction of the magnetic force on the electron ?

    asked on March 10, 2016
  14. English

    As a senior prefect of your school wite a speech you would give to fresh students telling them at least three things that can make their stay in the school successful

    asked on February 12, 2020
  15. Math

    Determine the number of diagonals in a regular 40-gpn

    asked on September 13, 2013
  16. chemistry

    What separatation method used to separate silver chloride (solid))and sodium trioxonitrate

    asked on January 12, 2018
  17. math

    A limited access highway had an access reduction and lost 1/13 of its exits. If 264 of its exits were left after the reduction how many exits were there originally?

    asked on May 9, 2013
  18. PYSICS

    The upward normal force exerted by the floor is 600 N on an elevator passenger who weighs 610 N. What is the reaction force to the upward normal force exerted by the floor? What is the reaction force to weight of the passenger? What is the magnitude of the

    asked on October 19, 2011
  19. Math

    An arc of lemgth 28cm subtends an angle at the centre of a circle. In the same circle, what angle does an arc of length 35 subtend

    asked on March 9, 2018
  20. PSY 410 Abnormal Psychology

    HELP- My text book wont let me open on my laptop and I can't seem to find the information I need. Create a timeline that displays the development of abnormal psychology. Include at least seven main milestones

    asked on January 26, 2015
  21. Physics

    A body travels from rest with acceleration 8m/s(squared)Find its velocity when it has covered a distance of 100 meter?

    asked on August 24, 2014
  22. Physics

    A stone is thrown horizontally at 30.0m/s from the top of a very tall cliff. Calculate its horizontal position and vertical position at 2s intervals for the first 10.0 s.

    asked on October 4, 2011
  23. math

    list the integers between -5 and 2, inclusive.

    asked on August 27, 2011
  24. writing

    Still, do-it-yourself renovations is usually a source of pride for new homeowners, no matter how hard or how frustrating. what correction should be made to this sentence? 1)remove the comma after still 2)change is to are 3) change the spelling of usually

    asked on June 10, 2011
  25. English

    Could you please tell me who/ what is the persona and who/what it is talking about? I got the idea of a snake and a spider but the two together don't make much sense in the context. I would really appreciate a fast rerply! "Eve" - by James Lasdun I like

    asked on February 27, 2010
  26. Chemistry

    Hydrazine has the formula N2H4 and is used as a rocket fuel (e.g. for the Apollo moon rockets). It burns in the following reaction for which the enthalpy change is -583 kJ/mol. N2H4(g) + O2(g) → N2(g) + 2 H2O(g) Calculate the N-N bond enthalpy in

    asked on November 15, 2017
  27. Pre calc

    sin(θ − ϕ); tan(θ) = 5/12 θ in Quadrant III, sin(ϕ) = − sqaure root10/10 ϕ in Quadrant IV. I used the sin equation sin(a)cos(b)-sin(a)cos(b) However I am still getting the wrong answer

    asked on April 11, 2017
  28. physics

    a galvanometer has a resistance 60 ohm and is of 5mA full scale deflection.how would you modify it so as to get 0-10V voltmeter

    asked on March 6, 2016
  29. math

    a spherical ballon is inflated with gas at the rate 20cm^3 min. how fast is the radius of the ballon changing at the instant when the radius is 2cm

    asked on February 22, 2016
  30. chemistry

    Discuss possible solutions to the reduced supply of light sweet crude oil. I have no idea to answer this question. Please advise me on how to answer it. Thanks in advance

    asked on March 13, 2012
  31. writing

    The cost of new homes is high today. Many people are purchasing older homes in need of renovation. the most effective combination of sentences 1 and 2 would include which of the following groups of words? 1) although many homes need renovation 2)although

    asked on June 10, 2011
  32. Chemistry

    Describe the manner in which ketohexose acts as a reducing sugar in the Benedict test.

    asked on September 16, 2008
  33. math

    a plane leaves an airport P 10 degrees south,60 degrees east and flies due north at 800km/hr.find its position after 24hrs

    asked on February 19, 2020
  34. Chemistry

    Ethanol has a density of 0.789 g/ml what volume of ethanol in litres would have a mass of 500g

    asked on September 30, 2019
  35. mathematics

    perform the indicated operation and express your result In a standard form i) (4+3i) + (6+4i) ii) 3 + 4i/6+3i

    asked on May 29, 2019
  36. chemistry

    what are the limitations of depression of freezing point

    asked on May 25, 2019
  37. math

    The human resources department of a consulting firm gives a standard creativity test to a randomly selected group of new hires every year. This year, 50 new hires took the test and scored a mean of 111.6 points with a standard deviation of 14.3. Last year,

    asked on December 14, 2018
  38. math

    a contractor needs two men and 5 litres of paint to paint on a fenced wall that is 40m by 3m in 9 hours. how many men and how much paint does he need to paint a fenced wall 20m by 12m in 3 hours

    asked on August 21, 2018
  39. HOME ECO

    ANOTHER WORD FOR NUTRITION

    asked on May 21, 2017
  40. Pre calc

    A 20-ft ladder is leaning against a building. If the base of the ladder is 7 ft from the base of the building, what is the angle of elevation of the ladder? (Round your answer to one decimal place.) How high does the ladder reach on the building? (Round

    asked on April 4, 2017
  41. Math

    Each day Trinh buys a can of soda at a machine in her apartment building for $.75. Instead, she could buy a 12-pack at the grocery store for $4.99. If she did this, how much money would she save in a month

    asked on October 25, 2016
  42. chemistry

    the reaction A+3B—>2C+D is first order with respect to reactant A and second order with respect to reactant B if the concentration of A is doubled and the concentration of B is halved the rate of the reaction would---------------by a factor of-----------

    asked on March 3, 2016
  43. chemistry

    the reaction A+3B->2C+D is first order with respect to reactant A and second order with respect to reactant B if the concentration of A is doubled the concentration of B is halfed and the rate of the reaction would -------by a factor of --------

    asked on March 3, 2016
  44. chemistry

    the reaction A+3B->2C+D is first order with respect to reactant A and second order with respect to reactant B if the concentration of A is doubled the concentration of B is halfed and the rate of the reaction would -------by a factor of --------

    asked on March 3, 2016
  45. physics

    what is the potential energy of 4 point charges each of value Q at the corners of a square of side length a.

    asked on December 28, 2015
  46. Math

    For what values of k does the line y= x + k pass through the circle defined by x^2 + y^2 = 25 at: 2 points? 1 point? 0 points? I found the discriminant: 100- 4k^2 but i don't know how to find for each of the points

    asked on March 26, 2015
  47. math

    what is the money value of 0.098

    asked on December 5, 2014
  48. maths

    A straight highway leads to the foot of a tower of height 50m. From the top of the tower, the angles of depression of two cars standing on the highway are 30 degree and 60 degree. What is the distance between the two cars and how far is each car from the

    asked on October 17, 2013
  49. Algebra (Work Problem)

    Susan's backyard has three faucets: A, B and C. If she turns on all three of them, it takes 380 minutes to fill the pool. If she turns on only A and B, it takes 570 minutes, and if she turns on only B and C, it takes 760 minutes. If she turns on only A and

    asked on September 22, 2013
  50. Algebra

    what are the appropriate metric units for measuring Bryce Canyon National Park

    asked on September 14, 2013
  51. Algebra

    In a triangle ABC, point o is the incentre AD=2", AB=9" and BC=10" find y

    asked on September 13, 2013
  52. Algebra

    What is the measure of each of the angles of a regular 5 sided polygon?

    asked on September 13, 2013
  53. Algebra

    write the equation in slope intercept form and identify the slope and y-intercept 4x+9y=4

    asked on September 13, 2013
  54. Algebra

    What is the measure of each of the angles of a regular 5 sided polygon

    asked on September 13, 2013
  55. math

    If you had 9 quarters, 6 dimes, 2 nickels and 3 pennies in a box, select on coin at random. What is the expected value of this experiment?

    asked on September 13, 2013
  56. math

    If the odds against John winning the election are 1 to 7,what is the probility that john will win the election

    asked on September 13, 2013
  57. geography

    what factors account for the similarities and differences between the subdivisions in tropical climate zones?

    asked on September 9, 2012
  58. Econ/stats

    The following data represent the number of flash drives sold per day at a local computer shop and their prices. Price (x) Units Sold (y) $34 3 36 4 32 6 35 5 30 9 38 2 40 1 a. Develop a least-squares regression line and explain what the slope of the line

    asked on April 29, 2012
  59. Health

    I know that most epidemiologist have masters on public health. Can one have a masters in community health. Or does the mph cover community health. Please explain.

    asked on July 16, 2011
  60. writing

    Doctors in the field of preventive medicine concentrate on "preventing disease and to encourage" good health practices. Best way to write the portion? 1) preventing disease and to encourage 2)prevent disease and to encourage 3)to prevent disease and to

    asked on June 10, 2011
  61. writing

    They emphasized the importance of good maternal and child health care, including the administering of vaccines. what correction should be made to this sentence? 1) replace they with it 2) change emphasized to emphasize 3) change the spelling of importance

    asked on June 10, 2011
  62. writing

    Sentence 10: Finally, friends whom you haven't seen in years, long-lost relatives, and even mere acquaintances will begin calling in february to plan a lengthy visit with you in the summer. what correction should be made to this sentence? 1)change friends

    asked on June 10, 2011
  63. History

    Is this ok? The Industrial Revolution was a period from the eighteenth to the nineteenth century during which major changes in agriculture, manufacturing, mining, and transport had a massive effect on the social, economic,and cultural conditions starting

    asked on March 4, 2010
  64. History

    Well can i include that i think this is an interesting topic to study because you know about the different views. Can i add that to the statement?

    asked on March 3, 2010
  65. health care

    Idnetify and describe three causes for the increasing costs of health care.What impact does each of these causes have on society?

    asked on August 15, 2009
  66. Physical Education

    The smooth and effective working together of your muscles and bones is what? Some call it muscle tone.

    asked on November 28, 2006
  67. math

    a plane leaves an airport P 10 degrees south,60 degrees east and flies due north at 800km/hr .(a)find its position after 24hrs. (b)the plane turns and flies at the same speed due west to reach Q longitude 12 degrees west.find the distance it has travelled

    asked on February 19, 2020
  68. Calculus

    Find the distance traveled in 45 seconds by an object traveling at a velocity of v(t) = 20 + 3cos(t) feet per second.

    asked on January 15, 2020
  69. Math

    Car travels 200 miles using 8 gallons of gas. How many miles per gallon can the car travel

    asked on January 8, 2020
  70. Chemistry

    During the determination ofCaCO3 in chalk content by back titration. a_what inert materials are likely to be present? b_suggest other suitable indicators of the reaction.

    asked on October 27, 2019
  71. maths

    jimush walks 40m eastward and 30m southward the angle made between the two distance is 90degree calculate the other angels

    asked on October 13, 2019
  72. mathematics

    find the modulus argument and principal argument of each of the following a) i b) -√5

    asked on May 29, 2019
  73. mathematics

    in a class of 50 student,18 offered mathematics, 21 offered chemistry while 16 offered biology, 7 student offered mathematics and biology, 9 student offered chemistry and biology while 5 student offered the three subject combination. a) find the numbers of

    asked on May 29, 2019
  74. chemistry

    calculate the total vapour pressure of mixture of methanol(64g) and ethanol(92g) at 298K given that the pure vapour pressure of methanol is 90mmHg and ethanol is 45mmHg (C=12, H=1, O=16)

    asked on May 24, 2019
  75. life orientation

    how can i advise a friend who response to a conflict avoidance that is not a healthy for sustaining positive relationship

    asked on February 3, 2019
  76. Chemistry

    If 20g of NaCl was used to form a 250cm3 of saturated solution of NaCl at 25oC. Calculate the solubility of the salt in mol/dm3 at that temperature. (Relative density of solution-1).

    asked on December 12, 2018
  77. Biology

    List 15 mechanical and 15 biological vectors and the diseases they transmit.

    asked on November 13, 2018
  78. Math

    A bucket when a fifth full holds 10 litres .How many litres will it hold when it is full?

    asked on October 29, 2018
  79. Math

    Solve 1/8^2-3x=2y+2 find x using equation formula

    asked on October 27, 2018
  80. Math

    Solve 1/8^2-3x=2y+2 find x using e question formula

    asked on October 27, 2018
  81. physics

    describe the force board experiment to show how to obtain the resultant of two non-parallel coplanar forces acting at a point.

    asked on September 12, 2018
  82. math

    Two fractions have the same denominator,15. The difference between the fractions is 2/5,and the result of dividing one of them by the other is 4/7. What are the fractions?

    asked on September 8, 2018
  83. math

    the H.C.Of two numbers is 7and their L.C.M is 140.If one of the numbers is 28,find the other number

    asked on September 1, 2018
  84. math

    If (a+b)^2 = a^2 + 6b +b^2 ,what is the value of a?

    asked on September 1, 2018
  85. math

    the sum of two different numbers is 40 . if the smaller number is divided by 4 and the larger number by 12 the sum of the quotients is 6.find the larger number

    asked on September 1, 2018
  86. science

    Importance of reflection of sound waves

    asked on August 21, 2018
  87. math

    express 7.179179... as a fraction

    asked on August 20, 2018
  88. math

    Express 4.050505... as a fraction

    asked on August 20, 2018
  89. math

    a candy mixture is made from two kinds of candy one kind costs twice as much per kg as the other kind.$10 worth of the less expensive candy is mixed with $8 worth of the more expensive candy to make 7kg of the mixture what is the price per kg of each kind

    asked on August 19, 2018
  90. math

    Assume x and y have 5:3 profit sharing ratio respectivly and a new member enters by taking 1/5 from x and 1/3 from y.what will be the new ratio of the three people?

    asked on August 10, 2018
  91. English

    Vaping should be outlawed. Agree or disagree?

    asked on November 17, 2017
  92. Math

    Find the square root of 25xsquared-40xy+16ysquared

    asked on September 15, 2017
  93. business mathematics

    Please assist me to factorise the following. 4x^3 + 5x^2y - 4xy^2 - 5y^2 \

    asked on April 2, 2017
  94. pre calc

    To measure the height of the cloud cover at an airport, a worker shines a spotlight upward at an angle 75° from the horizontal. An observer D = 600 m away measures the angle of elevation to the spot of light to be 45°. Find the height h of the cloud

    asked on March 27, 2017
  95. Physics

    a 1 kg textbook has been pushed and let go sliding to the left on a flat table no one is pushing the book at this moment. it is sliding a. calculate the weight of the textbook? How do I do these calculations? b. based on this weight, what must the normal

    asked on October 16, 2016
  96. world geography

    The North African Maghreb states, dominated by the Atlas Mountains, do not include A. Libya. B. Algeria. C. Morocco. D. Tunisia.

    asked on October 5, 2016
  97. physics

    What is quantity of heat required to melt down completely 1kg of ice at 30 degree celsius

    asked on May 18, 2016
  98. physics

    consider a series R-C circuit consisting of a 30 ohm resistor and 20*10^-6F capacitor connected to a 100V,50Hz power supply.find the magnitude of the current and the angle by which the current leads the voltage.

    asked on April 4, 2016
  99. physics

    prove that I=square root of (I^2avarage). using I=Iosin(wt)

    asked on April 3, 2016
  100. chemistry

    what kind of reactions require oxidizing agent(reduced or oxidized) for example SO3->SO4 does it require oxidizing or reducing agent why?

    asked on March 23, 2016

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