Popular questions and responses by Jan
  1. solid mensuration

    in the pyramid shown in the figure , AB=9 in ., BC= 12in ,and BD= 5 in . the three face angle at B are each 90 degree . calculate the three face angles at A and the total surface of the solid.

    asked on January 12, 2015
  2. Pre-Calculus

    Solve the equation on the interval [0,2pi). 2sin^2x-3sinx+1=0 (2sinx+1)(sinx+1) I don't think I did the factoring correctly. When I multiply it out to double check I get 2sin^2x+3sinx+1

    asked on October 27, 2017
  3. math

    my son is x year old ,in five years time i will be twice his age and both our ages will be multiples of 10.the sum of ages will be between 50 and 100.how old am i

    asked on March 2, 2016
  4. Medical Transcription Editing

    'Sensory was intact to light touch proprioception and pinprick.' I marked the prepositions 'was' and 'to' in this sentence and was marked incorrect. Advice please?

    asked on May 15, 2016
  5. calculus

    Express as a single logarithm ln(a)+1/2ln(b) 2ln4-ln2

    asked on May 1, 2011
  6. Medical Transcription Editing

    'He suffered an injury to his knee and this is causing him pain and discomfort'. What are the verbs in this sentence PLEASE? I think they are 'suffered' and 'causing' but I was marked 'incorrect' .. I'm at a loss!

    asked on May 15, 2016
  7. Medical Transcription Editing

    'The patient had anorexia though he denied any nausea or vomiting' .. I marked the verb in this sentence as 'denied' but it was marked 'incorrect' .. please help!!

    asked on May 15, 2016
  8. physics

    0.50 L of water at 16°C is poured into an aluminum ice cube tray of mass 0.250 kg at the same temperature. How much energy must be removed from this system by the refrigerator to turn the water into ice at -8°C?

    asked on February 3, 2016
  9. basic statistics for the behavioral sciences

    (a)on a normal distribution of exam scored, poindexter scored at the 10th percentile, so he claims that he outperformed 90% of his class. Why is he correct or incorrect? Because Foofy's score is in a tail of the distribution, she claims she had one of the

    asked on September 9, 2011
  10. basic statistics for the behavioral sciences

    there are 80 students enrolled in statistics. (a)you and 11 other earned the same score. what percent of the class received your score? (b)forty percent of the class received a grade of C. how many students received a C? (c) only 7.5% of the class received

    asked on August 27, 2011
  11. Grammar

    'The genitourinary exam was unremarkable, with a circumcised !@#$%^&.' Verbs: 'was' and 'with'?

    asked on May 15, 2016
  12. Business Statistics

    The U.S. Dairy Industry wants to estimate the mean yearly milk consumption. A sample of 16 people reveals the mean yearly consumption to be 60 gallons with a standard deviation of 20 gallons. a. What is the value of the population mean? What is the best

    asked on July 28, 2013
  13. algebra

    Given D=5, E=10 and F=4, evaluate D E/F Multiple choice 1/2 2 25/2

    asked on June 13, 2011
  14. science

    what is the solute and solvent in a solution made from 15 mL of oxygen and 5 mL of helium?

    asked on November 4, 2010
  15. biology- sex linked diseases, punnet sqares

    [IMG]ht tp ://i25 .tinypic. com/w7nyc. jpg[/IMG] i have an idea of how to do the questions above but can someone do them to so i can clarify?

    asked on January 27, 2008
  16. Math

    Ben has 3 times as many guppies as goldfish. If he has a total of 20 fish,how many guppies does he have

    asked on September 6, 2016
  17. math

    LMN have vertices at L(0,4) M(-5,2),and N (2,-2). determine the equation for the perpendicular bisector that passes through MN

    asked on March 18, 2012
  18. MATH


    asked on February 5, 2012
  19. Physics

    A hot-air balloon rises from the ground with a velocity of (2.00 m/s)y. A champagne bottle is opened to celebrate takeoff, expelling the cork horizontally with a velocity of (6.00 m/s)x relative to the balloon. When opened, the bottle is 7.00 m above the

    asked on February 4, 2012
  20. geometry

    using inductive reasoning finish the pattern and explain george,thomas,abe,alexander

    asked on September 16, 2010
  21. math

    0=x^2 + sinx

    asked on August 25, 2009
  22. math

    the price p and the quantity x sold of a certain product obey the demand equation p=(-1/3)x + 100 o is < or equal to x < or equal to 300 A) express revenue R as a function of x b) what quantity x maximizes revenue.

    asked on October 5, 2008
  23. chemistry

    If the concentration of some reactant, B, is tripled, the rate of reaction triples. What is the order of B?

    asked on May 13, 2020
  24. geography

    Explain the causes of poor service of water

    asked on July 14, 2019
  25. Statistics

    A popular claim nicknamed "freshman 15" states that many college students gain weight in their freshman year. You are give 95% confidence interval as 55.9% < p < 78.4%. correctly interpret the interval.

    asked on October 16, 2018
  26. chemistry

    Look in the owner’s manual of your car to determine the amount of gasoline your tank can hold. Using the information presented in the text, calculate how much carbon dioxide is produced from driving your car for a year assuming that all the gas is octane

    asked on May 30, 2017
  27. Calculus

    An error in the measurement of the radius of a circle results in an error in the computation of its area. Find and interpret the sensitivity of area (a) of a circle to the measurement of radius, r, when the radius r=2 meters.

    asked on October 22, 2016
  28. Grammar

    Are these the verbs in this sentence, please help?! 'The patient is alert and oriented and has normal mental status exam.' Verbs: 'is alert' - 'oriented' Thank you.

    asked on May 15, 2016
  29. Geometry

    Damon, can I write it like that instead of a two column proof. I am comparing a bicycle and a model of one?

    asked on August 5, 2014
  30. geometry

    I have to construct my initials J and E geometrically. I drew a base line with two points. Then I drew a line through them. I thought this was right for the E but it's not. What am I doing wrong? I do know how to make a parallel and perpendicular lines.

    asked on August 2, 2014
  31. chemistry

    Copper(II) chloride and lead(II) nitrate react in aqueous solutions by double replacement. Write the balanced chemical equation, the overall ionic equation, and the net ionic equa- tion for this reaction. If 10.27 g of copper(II) chloride react, what is

    asked on February 23, 2014
  32. physical science

    a weigh lifter raises a 70-kg barbell from the floor to a height of 2.2 m in 1.2s what was his average power output during the lift?

    asked on February 1, 2014
  33. geometry

    Dru is challenged by her geometry teacher to estimate the height of the school flag pole without measuring. She decided to walk off the length of the shadow cast by the pole by successively walking the noted length of her shadow. If dry is 5ft 6 in.tall

    asked on January 30, 2014
  34. algebra

    But I am getting more and more confused. -3-3x=-9????? and x/6=-24 but the there is a negative sign like x - - =-24 6 I know I am over thinking this,but I am confusing myself on these two???

    asked on August 19, 2013
  35. algebra

    the vertices of quadrilateral EFGH are E(-7,3) F (-4,6) G (5,-3) and H (2,-6) what kind of quadrilateral is EFGH

    asked on May 7, 2013
  36. Physics

    A 12000 kg airplane launched by a catapult from an aircraft carrier is accelerated from 0 to 200 km/h in 3 s. (a) How many times the acceleration due to gravity is the airplane's acceleration? (b) What is the average force the catapult exerts on the

    asked on January 16, 2013
  37. carpentry

    what is the angle of a ladder with a 4 metre vertical and a 1 metre horisontal

    asked on July 9, 2012
  38. eng/lit

    In line 8 Of against that time the reasons mentioned are best characterized as a)scientific explanations for a natural force b)arguments against rationality itself c)arguments for the importance of loving d)logical explanations for the absence of love

    asked on October 6, 2011
  39. eng/lit

    Which of the following best describes the language of the poem Against that time Shakespeare? a)concrete and matter-of-fact b)euphemistic and prosaic c)metephoric and logical d)informal and conversational e)ironic and amused

    asked on October 6, 2011
  40. eng/lit

    in the sonnet against that time shakespeare in lines 1-12,which of the following is a main verb? a)come line 1 b)shall see line2 c) shalt pass line5 d)shall find line8 e)do ensconce line 9?

    asked on October 6, 2011
  41. eng/lit

    in shakespeare's against that time the speaker is addressing who? choices are a lover or former lover?

    asked on October 6, 2011
  42. english

    in the poem the tortoise in eternity,what does the poet refer to writing patterned horn?

    asked on October 6, 2011
  43. Human Service HSM/230

    help needed with this assignment: 1. What are the characteristics of a mission? 2. What are three hypothetical examples of a mission? 3. In what ways do the examples fit the characteristics of a mission, if they do not fit the characteristics, also explain

    asked on August 8, 2011
  44. pre calc

    factor ((5a^2+12a+4)/(a^4-16)) / ((25a^2+20a+4)/(a^2-2a))

    asked on June 22, 2011
  45. chem

    A sample of O2 gas was collected over water at 23ºC and 711 torr. What is the partial pressure of the O2? (The vapor pressure of water at 23ºC is 21.2 torr.) Partial pressure of O2:_____torr

    asked on April 18, 2011
  46. Science

    What is the difference between rhyolite and basalt?

    asked on November 14, 2010
  47. math

    Why was Jesse James in the hospital?

    asked on February 17, 2010
  48. Physics

    A molecule of DNA (deoxyribonucleic acid) is 2.03 µm long. The ends of the molecule become singly ionized: negative on one end, positive on the other. The helical molecule acts like a spring and compresses 1.13% upon becoming charged. Determine the

    asked on February 6, 2010
  49. physics

    The vertical leap of a professional NBA athlete is reported to be 47.3 inches. What is his takeoff speed? in m/s? is this kinematics??

    asked on December 10, 2009
  50. Managerial Economics

    Help me on this one please? labor usage 3,7,9,11,17,17,20,24,26,28,30 output 1,2,3,5,8,10,15,18,22,21,23 a. does a cubic equation appear to be a suitable specification, given these data? You may construct a scatter diagram to help with this question.

    asked on September 12, 2009
  51. Chemistry-pls help

    I refer to the following question. Is my explanation correct, that step two C6H14(g)--> 6CO2(g) + 7H2O(g) can be considered combustion reaction? Thank you! Posted by jan on Tuesday, March 31, 2009 at 10:28pm. C6H14(l)->C6H14(g) ->6CO2(g) + 7H2O(g)

    asked on April 1, 2009
  52. math

    i don't understand what a horizontal or vertical stretching is of a graph. y=x^3 Find graph horizontally stretched by a factor of 4 and vertically stretched by a factor of 4

    asked on October 2, 2008
  53. civics, government, presidential elections 2008

    How are Hillary CLintons views on illegal immigration different than the republicans...what makes her solution better?

    asked on February 4, 2008
  54. biology

    Can males have turner syndrome? Like if a male was born with part of his x chromosome missing?

    asked on November 4, 2007
  55. physical science

    If 500 kg of water at 200 degrees F is poured into a lake that is 50.0 degrees F, how much heat is added to the lake? Joules added = mass x specific heat water x delta T. mass = 500 kg Look up specific heat water in cal/kg delt T is 200. Solve for Joules

    asked on June 22, 2007
  56. physical science

    How much heat is required to raise the temperature of a 10.0 kg of aluminum by 80 degrees Celsius? Look up the specific heat of aluminum. The units will be Calories/kg*degC or Joules/kg*degC. Multiply that number by the temperature change (80 C) and the

    asked on June 22, 2007
  57. chemistry

    The decomposition of acetaldehyde has a rate constant of 4.71 × 10⁻⁸ L/mol/s. What is the instantaneous rate of decomposition of acetaldehyde in a solution with a concentration of 5.55 × 10⁻⁴ M?

    asked on May 13, 2020
  58. chemistry

    Which of the following correctly relates the two equilibrium constants for the two reactions shown? A + B ⇄ 2 C, K₁; 2 A + 2 B ⇄ 4 C, K₂.

    asked on May 13, 2020
  59. chemistry

    Consider the reaction 2 A ⇄ 2 D + E. If K = 5 at Temperature T, which direction will this reaction proceed if [A] = 0.5 M, [D] = 1.5 M and [E] = 0.5 M at temperature T?

    asked on May 13, 2020
  60. Chemistry

    How much energy would it take to warm 30.0g of water at 35 C to the boiling point and boil all the liquid away?

    asked on January 24, 2020
  61. math

    jan is enlarging the sketch shown on a photocopier. which could be the dimensions of her enlargement

    asked on January 6, 2020
  62. Math

    A person spends One-fourth of her income for board, one-twelfth for clothes and one-half for other expenses, and saves $10,000. What is her income?

    asked on December 15, 2017
  63. Math

    Write the equation of a line in slope intercept form that is parallel to the given line and passes through the given point. y = 2x + 3 (1, 7)

    asked on December 13, 2017
  64. Bio

    Intercostal muscles simply explain?

    asked on December 4, 2017
  65. As physics

    The table below shows how the braking distance x for a car depends on its initial speed u u / ms-1 5.0 10 20 4 x / m 2.0 8.0 32 128 the reaction time of a driver is 0.60s. Calculate the sopping distance of the car when u= 30ms-1. The mark scheme says:

    asked on December 1, 2017
  66. As physics

    How do you calculate the braking distance? driver reaction time=0.6s initial speed of car=30ms-1 speed*2= distance*4 Please show all the steps and the equations you used in words the question states initial speed*2 is equal to = distance*4 If you need

    asked on November 30, 2017
  67. As physics

    General braking distance formula /working out please clearly say.

    asked on November 30, 2017
  68. Chemistry

    In my titration method it says trial titration. In my table it says rough titration. I know the meaning of both. But, are they the same thing and could i say my first titration rough value is both the trial titration and rough titration?

    asked on November 28, 2017
  69. physics As

    X - ..- …- ….- ……- ……….- …………..- ………………- …………………- …………………..---------Y -The loss of gravitational potential energy Ep of the rider and motorbike from X to Y is 4.66x10^4 -The kinetic energy Ek of

    asked on November 23, 2017
  70. physics As

    How do you calculate the braking distance? driver reaction time=0.6s initial speed of car=30ms-1 speed*2= distance*4 Please show all the steps and the equations you used in words

    asked on November 23, 2017
  71. math

    Clay earned $2,600 last he paid $234 for entertainment. What percent of his earnings did clay pay in entertainment expenses?

    asked on January 5, 2017
  72. Physics

    An electric dipole p-> (-> is vector symbol) where p-> = (5x10^-15 C m, -5x10^-15 C m, 0 C m) located at r-> = (0 m, -0.005 m, 0m) Q = 1x10^-6 C at origin. What's the torque on the dipole?

    asked on September 24, 2016
  73. Math science

    If the numbers never end is zero the end number?

    asked on August 28, 2016
  74. Algebra two

    Find the quotient and remainder 452÷8

    asked on August 28, 2016
  75. Math

    How do you write 210,004,050 in standard form?

    asked on August 28, 2016
  76. maths

    at a soccer stadium, a child's entrance ticket is 20% of that for an adult. a child's entrance ticket is N$ 10.00. how much does an adult entrance ticket cost?

    asked on August 1, 2016
  77. chemistry

    calculate the number of moles of Mg in 0.12g(relative mass of Mg=24)

    asked on May 5, 2016
  78. Math/Precal

    How do i solve for x: (9^2x)/(27^x-2)=81^3x-4

    asked on April 26, 2016
  79. Math

    I need help with this problem. It says What is the reciprocal of 0.06? Would I change 0.06 to a fraction which is 6/100 and flip it over?

    asked on April 8, 2016
  80. Spanish

    Please check my answer. Are all the accent marks, grammar, and spelling correct? ¿Qué hago para ponerme en forma? Para ponerme en forma hago ejercisios y como bien.

    asked on April 5, 2016
  81. Spanish

    ¿Qué obras de arte o de literatura influyen en tu vida? What would be an answer to this? I believe the question is asking what art or literature has influenced your life.

    asked on April 5, 2016
  82. math

    Sam needs to cut a piece of sheet metal into 8 pieces, it takes 5 minutes to cut, how many cuts will he make.

    asked on March 30, 2016
  83. Physics

    A pendulum is constructed of a mass m connected to a mass ess rigid rod of lengthl. As shownin the figure, the other end of the rodis suspended from a point on the ring ofradius R. The pendulum is free to swing in a vertical plane that is also the plane of

    asked on March 13, 2016
  84. Physics

    A partide of mass m moves along a trajectory given by x= a cos δ1 t and y = asinδ2 t . Find rand y component of the force acting on the patde, potential energy, kinetic enenev of the partide and hence show that the total energe E= KE + PE =1/2 m(a*2

    asked on March 13, 2016
  85. trigonometry

    You are to run a conduit diagonally cross a parking lot that is 200 ft log and 60 ft wide. How much conduit will you need to complete this run?

    asked on February 7, 2016
  86. maths

    Mr B is now twice as old as his younger brother. Eight years ago he was three times as old as his younger brother was then. How old is the younger brother now?

    asked on February 3, 2016
  87. physics

    Suppose 3.0 cm of rain at 10°C falls on a rectangular region of dimensions 2.0 km x 3.0 km. How much energy was released when water vapor condensed to form this amount of rain?

    asked on February 3, 2016
  88. physics

    Ice is added to 0.75 L of water at 20°C to make very cold water at 0°C. If enough 0°C ice is added so that the mixture becomes all liquid, how much liquid is in the pitcher when this occurs? Density of water = 1.00 x 103 kg/m3.

    asked on February 3, 2016
  89. math

    bob sold 425 tickets for a dance. tickets cost $18 per adult and $6 per child. Total receipts were $6450, how many children tickets were sold?

    asked on December 28, 2015
  90. Algebra 1

    The length of a rectangle is 3 cm more than the width. The perimeter of the rectangle is Cm. What is the length and width of the rectangle?

    asked on November 16, 2015
  91. Social Studies

    What economic, environmental, and social difficulties would Native Communities face as they tried to preserve their own culture? - HORIZONS CANADA MOVES WEST

    asked on November 4, 2015
  92. math

    if I made $400.00 and sold the tickets at 3 for $5.00...how many tickets did I sell

    asked on June 26, 2015
  93. Chemistry

    How much heat is required for 32.5g of Na2co3 to completely decompose?

    asked on June 4, 2015
  94. Math: Arithmetic Sequence.

    the 3rd of an Arithmetic sequence is 8 of the 16th term is 47. Find a subed 1 and the common difference. Construct the sequence.

    asked on June 4, 2015
  95. ART 101

    There are several, but does any one know at least the top 5 vocabulary words art historians use to describe the work of art? I have three but I would like at least 2 more. I would greatly appreciate it. Thanks

    asked on April 29, 2015
  96. POL 201: American National Government

    4. An appellate court that hears an appeal on a money laundering case from a district court (Points : 1) is not concerned with guilt or innocence. can only send the case back for retrial. is concerned with whether proper legal procedures were followed

    asked on April 13, 2015
  97. Bus 101

    Which of the following represents the basic accounting equation

    asked on April 3, 2015
  98. Statistics

    If the average home cost $100,000, with a standard deviation of $15,000, what would a home on the 20th percentile rank cost?

    asked on April 3, 2015
  99. logic and design

    algorithm for waking in the morning, making and eating breakfast, I don't feel this is enough for my teacher can you help me. start get up while not awake drink coffee endwhile if temperature < 65 then wear sweater else wear t-shirt endif if hungry then

    asked on January 29, 2015
  100. science

    The steel round frame is 2,4m high. There have to be wrapd five coils around the frame. One coil diameter is 35mm. Each coil is 50m long. All of the coils have to be wrapd next to each other.What must the diameter be of the frame if the hight of the frame

    asked on January 27, 2015


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