# Jan

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.

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

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

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?

5. ## calculus

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

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!

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!!

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?

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

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

11. ## Grammar

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

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

13. ## algebra

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

14. ## science

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

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?

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

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

18. ## MATH

iF MAN RUNS AN HOUR AND A HALF AT 8 MILES AN HOUR DUE SOUTH, AND THEN HE CONTINUES SOUTH ON A BUS TRAVELING AT 55 MILES AN HOUR , FOR 24 MINUTES. hOW FAR DID HE TRAVEL?

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

20. ## geometry

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

0=x^2 + sinx

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.

23. ## chemistry

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

24. ## geography

Explain the causes of poor service of water

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.

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

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.

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.

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?

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.

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

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?

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

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???

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

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

37. ## carpentry

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

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

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

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?

41. ## eng/lit

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

42. ## english

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

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

44. ## pre calc

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

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

46. ## Science

What is the difference between rhyolite and basalt?

47. ## math

Why was Jesse James in the hospital?

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

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??

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.

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)

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

53. ## civics, government, presidential elections 2008

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

54. ## biology

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

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

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

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?

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.

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?

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?

61. ## math

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

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?

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)

64. ## Bio

Intercostal muscles simply explain?

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:

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

67. ## As physics

General braking distance formula /working out please clearly say.

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?

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

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

71. ## math

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

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?

73. ## Math science

If the numbers never end is zero the end number?

74. ## Algebra two

Find the quotient and remainder 452÷8

75. ## Math

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

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?

77. ## chemistry

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

78. ## Math/Precal

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

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?

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.

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.

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.

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

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

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?

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?

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?

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.

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?

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?

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

92. ## math

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

93. ## Chemistry

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

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.

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

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

97. ## Bus 101

Which of the following represents the basic accounting equation

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?

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