# Questions Asked onJanuary 2, 2012

1. ## Geometry Question

B is the midpoint of segment AC and D is the midpoint of segment CE. Solve for x, given BD=3x+5 and AE=4x+20. Sorry I couldn't get the link for the picture but, the diagram is a picture of a triangle with a C at the top, and A and E on the bottom angles,

2. ## Trig

sinAsin2A+sin3Asin6A+sin4Asin13A/sinAcos2A+sin3Acos6A+sin4Acos13A = tan9A

3. ## physics

An oxygen molecule consists of two oxygen atoms whose total mass is 5.3 x 10-26 kg and whose moment of inertia about an axis perpendicular to the line joining the two atoms, midway between them, is 1.82 × 10-46 kg·m2. From these data, estimate the

4. ## calculus

2. Consider the function f defined by f(x)=(e^X)cosx with domain[0,2pie] . a. Find the absolute maximum and minimum values of f(x) b. Find the intervals on which f is increasing. c. Find the x-coordinate of each point of inflection of the graph of f.

5. ## pre calc

The minute hand of a clock is 7 inches long. How far does the tip move in 16 minutes? a.56/15pi b.8/105pi c.4/105pi d.28/15pi

6. ## science

please help...A wheel 1.0m in diameter is rotating about a fixed axis with an initial angular velocity of 2rev.s-1.the angular acceleration is 3rev.s-1. (1)compute the angular velocity after 6s. (2)through what angle has the wheel turned in this time

7. ## Math-pre-calculus

Given tan theta=-8/5 and sin theta < 0, find cos theta.

8. ## physics

A wheel of diameter 28.0 cm is constrained to rotate in the xy plane, about the z axis, which passes through its center. A force = (-38.0 + 39.0 ) N acts at a point on the edge of the wheel that lies exactly on the x axis at a particular instant. What is

9. ## physics

A spring has k=88 N/m. create a graph and use the graph to determine the work needed to stretch the spring from x = 4.1 cm to x = 5.8 cm, where x = 0 refers to the spring's unstretched length.

10. ## science

How many grams of copper sulfate is needed to make 1125L of 25 ppm solution

11. ## physics

A body of mass 2 kg is dropped from the top of a tower of height 100m. If the acceleration due to gravity is 10 m/s2 calculate the K.E at the end of 5 seconds

12. ## science

Ho many millilitres of sucrose is needed to make 25 L of liquering soluton at 20% v/v

13. ## calculus

2. Consider the function f defined by f(x)=(e^X)cosx with domain[0,2pie] . a. Find the absolute maximum and minimum values of f(x) b. Find the intervals on which f is increasing. c. Find the x-coordinate of each point of inflection of the graph of f.

14. ## Psychology

How can false consensus be applied to elections?

15. ## chemistry

What are the the missing reactants for the double-displacement reaction that produces PF5 and AsCl3 ?

16. ## finance

13. A project has the following cash flows. What is the internal rate of return? Year 0 cash flow -\$443,600 1 \$224,800 2 \$224,800 3 \$ 67,200 (Please calculate the solution and show your work)

17. ## science

If 20g of Ca(0H)2 took part in the following reaction, how much CaCl2 would be formed. Ca(0H)2 + 2HCl to CaCl2 +2H20

18. ## science

If 100g of CuSO4 took part in the following reaction how much Cu(0H)2 would be formed CuSO4 + 2NaOH to Na2SO4 + Cu(OH) 2

19. ## algebra

Two expressions for calculating the drug dose for young children are: (2t^3 + t^2 -t)a / 48t^2 -24t and (3t^2 -2t)a / 3t^2 + 34t - 24 where t is the age of the child in years and a is the adult dose. If the adult dose for a pain killing drug is 250mg, then

20. ## Chemistry

Find delta G knot for the following reaction: 2Ch3OH(l) + 3O2(g) --> 2CO2(g) + 4H2O(g)

21. ## algebra

A trader buys tea for \$1200 and sells it for \$1550. Per sack of tea he makes a profit of \$50. How many sacks of tea did he buy? Is the answer 7?

22. ## Physics

A hemispherical bowl of radius R is rotated about its axis of symmetry which is kept vertical. A small block is kept in the bowl at a position where the radius makes an angle Θ with the vertical. The block rotates with the bowl without any slipping. The

23. ## GeOmEtRy!!!

Determine whether a figure with the given vertices is a parallelogram. use the method indicated. P(-5,1) S(-2,2) F(-1,-3) T(2,-2); Slope Formula

24. ## Math-pre-calculus

Given tan theta=-8/5 and sin theta < 0, find cos theta.

25. ## physics

A cat chases a mouse across a 1.5 m high table. The mouse steps out of the way, and the cat slides oﬀ the table and strikes the ﬂoor 1.0 m from the edge of the table. The acceleration of gravity is 9.81 m/s 2 . What was the cat’s speed when it slid

26. ## algebra

At the local ballpark, the team charges \$5.00 for each ticket and expects to make \$1,300 in concessions. The team must pay its players \$1,800 and pay all other workers \$1,500. Each fan gets a free bat that costs the team \$3.00 per bat. How many tickets

27. ## algebra

Mellissa receive three times as many points as janice. how to write that expression

28. ## math

week 1 3 miles week 2 7 miles week 3 11 miles week 4 15 miles sophia predicted that jhon will run 32 miles during 9th week. use words symbols or numbers to explain wether sophia's prediction is correct

29. ## College Algebra

Penn foster College Algebra exams...

30. ## Chemistry

The reaction describing the formation of ozone from oxygen is shown below. 3 O2(g) 2 O3(g) Calculate Grxn at 288 K for this reaction in a flask where [O2] = 3.419 x 10-2 M and [O3] = 5.783 x 10-4 M. Assume G° = 326 kJ. Use molarity to construct the

31. ## World history

During the middle ages, in which of these societies did invasion, ang migration NOT play a significant role in social, cultural, and economic change? A. Byzantium B. Kievan Russia C. Mali D. Song China

32. ## Sociology

Can you help me relate what I call dangerous dogs, specifically, like dogs who attack other dogs on a walk and then go on to attack the person walking the dog to the 3 sociological perspectives: functionalism, conflict and interactionism Please if you can

33. ## pre calc

a kite currently flying at an altitude of 16 meters above the ground. If the angle of elevation from the ground to the kite is 30 degrees, find the length of the kite string to the nearest meter.

34. ## english

please teach me which sentence is correct in english gammar. 1. It does not have to be a goodlooking. 2. It does not has to be a goodlooking.

35. ## Algebra

69% of the students at a school are involved in after-school activities. There are 598 students in the school. Which is the best estimate of the number of students in after school activities? A. 360 B. 380 C. 420 D. 450

36. ## Psychology

How does hindsight bias relate to a presidential election?

37. ## Algebra

Use scientific notation to multiply the following two numbers. Express the answer using scientific notation; retain all nonzero decimal places (1.9 • 10^4) • (8.4 • 10^5)

38. ## 7th gr math proportional relationships

music down loads cost .95 cents each . is this a proportional relationship?

39. ## Physics

A turn of radius 20m is banked for the vehicles going at a speed of 36km/h. If the coefficient of static friction between road and the tyre is 0.4, what are the possible speeds of a vehicle so that it neither slips down nor skids up ?

40. ## Algebra

Help me solve this please ::::Divide: ã10a/16y

41. ## C++

Write a function that takes an int argument and doubles it. The function does not return a value.

42. ## history

The basis for the alphabet developed by the Greeks came from

44. ## Biology

what would b possible sources of errors for a potato experiment involving osmosis with potato going into salt solutions ( 50% and 25%) and also potato going into 100% distilled water?

45. ## math

is 7pi/6 an irrational number?

46. ## Math

The perimeter of a rhombus is 40 cm and the distance between a pair of parallel side is 5.6 cm. If the length of one of its diagonals is 7 cm, find the length of the other diagonal.

47. ## physics

An 89 N box of oranges is being pushed across a horizontal floor. As it moves, it is slowing at a constant rate of 1.20 m/s each second. The push force has a horizontal component of 25 N and a vertical component of 30 N downward. Calculate the coefficient

48. ## math

The area of the wall you are going to paint is 50 feet2. If the width is half the height, what are the dimensions of the wall? In answering this problem follow the steps below: 1. Represent the height as ‘x’ and then write the width in terms of x (for

49. ## history

Both Johnson and Lincoln were criticized for "abuse of power." Give examples for each man. Is it hypocritical to praise one and damn the other?

50. ## physics

What is force defin it

51. ## trigonometry

I need help!!!! In the right triangle shown below, OG = 7, DG = 8, and m

52. ## Cultural diversity

The federal government has a lot of programs in place to hire the Natives and this is often run by the Bureau,however, if this is in place, why army the Indians getting the benefits? Who is swinging the money?

53. ## physics

I have rope of 4 meters. I want 1.85 meters of rope from that rope. i don't have scale to measure the length of the rope. how can i get the rope of 1.85 meters exactly?

54. ## Functions

Given the following function f(x)=-x^2-10x. Find the domain, range and decreasing intervals?

55. ## physics

Inclined plain-----on Hypotenuse weight of 250 Newton is placed and the base distance is 9 m. What is the minimum force required to lift the weight up?

56. ## piecewise function

f(x)={2x-1 ifx>1 {-4 if -1¡Üx

57. ## Maths

When J gives A \$6, they will both have the same amount. When A gives J \$6, she will have 1/3 of J's amount. What are the amounts they both have at first?( please do not solve by algebra, i have not been taught algebra)

58. ## science

As the consultant for KU Consulting, you have been authorized to change the existing facility (limited construction budget) and/or refine the process flow of the manufacturing area. Operational limitations: All changes must be completed within a 60 day

Name the smallest angle of triangle ABC, segment AC is 9, segment CB is 10, and segment AB is 8.

60. ## Geometry One Question

Three security cameras were mounted at the corners of a triangular parking lot. Camera 1 was 151 ft from camera 2, which was 122 ft from camera 3. Cameras 1 and 3 were 139 ft apart. Which camera had to cover the greatest angle? camera 1 camera 2 cannot

61. ## Functions/End behavior

f(x)=x^2(x^2-2)(x+2) Determine the end behavior, find the power function that the graph of f resembles for large values of |x| Find the maximum number of turning points

62. ## History

what were key changes in the roles that women played in American societies from 1900-1929, and how were these changes reflected in the way women were portrayed in the media during that time

63. ## Prob. & Statistics

If one event, say Black, has P(.70) and another event, say Red, has P(.30). What is the probability in ten events of alternating choices, Red then Black, and being 100% correct, 90% correct. What should be the expected % correct and what is the standard

64. ## math

a particle with initial velocity of 200m/s travels 1500m with uniform retardation 10m/s2.what is the time reqd? explain reason for two answer

65. ## Geometry

What point is on the perpendicular bisector of the segment with endpoints (3,4) and (9,4)?

66. ## English?

Identify the tense of the underlined verb. Laura( has been writing) a novel for the past two years. present progressive past progressive present perfect progressive past perfect progressive

67. ## History

The Federal government has a lot of programs in place to hire the Natives and this is often run by the Bureau, however, if this is in place, why aren't these Indians getting the benefits. Who is swindling the money?

68. ## reposting english correction

Hi, Writeacher this is my reposting from the Jack and the Beanstalk story. #1- Well in the beginning of the of the story he was a caring good boy. So, he was a good character. The only bad thing he did was stealing from the ogre. #2- In the beginning of

69. ## math/calculus

lim as x->+1 x^3 -1/x^2 -1 lim as x->-1 x^3 -1/x^2 -1 lim as x->1 x^3 -1/x^2 -1

3/4(2x-1)-5 is equal or greater than 5/4(x-3)

71. ## math/calculus

let f(x)=ln(x)x>0 let k(x)= f(g(x)) and m(x)= f(g(x)) a) Find the domain of the function K(x). b) Find the domain of the function M(x). c) Find the value of k'(5)

72. ## math/calculus

f(x)= the absolute value of x^2-6x-7 a) Find a piecewise defined function that has no absolute value involved b) Let g(x)=f(x) for x is greater than or equal to 7 find an expression of g^-1(x) c. give the domain and range of g^-1(x)

73. ## physics

Bill kicks a rock oﬀ the top of his apartment building. It strikes a window across the street 11 m away. The acceleration of gravity is 9.8 m/s 2 . If the window is 22 m below the position where Bill contacted the rock, how long was it in the air? Answer

74. ## Rational Zeros

List all possible rational zeros for the polynomial below. Find all real zeros of the polynomial and factor f(x)=2x^4+19x^3+37x^2-55x-75

75. ## College Algebra

Solve the following equation in the complex number system x^4+x^3+4x^2+10x-60=0

76. ## C Programming

I need help creating a program that uses a menu with options to enter student information (name, ID, GPA), print student information, or quit the program. Use data files and FILE pointers to store and print information entered.

77. ## finance

All techniques with NPV profile- mutually exclusive projects. Projects A and B, of equal risk. Are alternatives for expanding Rosa Company’s capacity. The firm’s cost of capital is 13%. The cash flows for each project are shown in the following table.

78. ## World history

What religion are the four noble truths associated with ?

79. ## chemistry

C3H8 (g) + 5O2 (g) 3CO2 + 4HOH If such an oxidation is carried out on a gaseous mixture prepared by mixing 6.1 grams of propane and 11.0 L of oxygen measured at 1.0atm and 150 degrees celcius, what will be the total final volume under the same conditions

81. ## Math

Could someone give me an example of a linear eqution using elimination to solve the systems of equations?

82. ## Chemitry

3moles of sodium hydroxide will neutralize 1mole of citric acid,what volume of 2moles of sodium hydroxide solution will neutralize 50cm of citric acid solution?

83. ## World

Proximity to China allowed the introduction of Buddhism and Confucianism into which state?

84. ## World

What was one major difference between the Inca and the Aztec civilizations ?

85. ## History

How was the Inca and Aztec empires similar ?

86. ## World history

What was one major factor in the spread of Eastern Orthodoxy ?

87. ## calculus

consider the function; f(x)=x^4-3x^2-1 a) Find all the point where f'(x)=0 b) Use the second derivative test to classify the stationary points?

88. ## science

how is it possible a can with calculated density greater than 1.00g/ml could have floated?

89. ## chemistry

If 10 g of C2H2 is mixed with 80 g of Br2, what masses of c2h2br2 and c2h2br4 will be formed? Assume that all the C2H2 has reacted.

90. ## chem

How many liters of 1.00 M HCl must be added to 50.0 ml of 0.500 M HCl to give a solution whose concentration is 0.750 M?

91. ## math

what is a function? if the input is 72 what is the output

92. ## statistics

Use the data given in table 13.1 on page 846 to construct a frequency distribution with a first class ( in ten thousands ) of 150-296.

93. ## math, algebra

How much should you deposit right now at 6% compounded monthly so that you can withdraw \$1000 each month for 10 years? thanks in advance!

94. ## math, algebra

Two expressions for calculating the drug dose for young children are: (2t^3 + t^2 -t)a / 48t^2 -24t and (3t^2 -2t)a / 3t^2 + 34t - 24 where t is the age of the child in years and a is the adult dose. If the adult dose for a pain killing drug is 250mg, then

95. ## ENGLISH

What responsibilities did Marilyn Monroe have?

96. ## algebra

It takes 30 days to fill a laboratory dish with bacteria. If the size of the bacteria doubles each day. How long did it take for the bacteria to fill one half of dish?

97. ## algebra

If two typists can type two pages in two minutes, how many typists will it take to type 18 pages and 6 minutes?

98. ## Chemistry

For the reaction: 2 NO(g) + 1 O2(g) 2 NO2(g) Calculate K, the equilibrium constant, from thermodynamic data at 281 K. (Hint #1: Assume that S and H do not change with temperature.) (Hint #2: Work in J/mol)

99. ## algrbra

If a hen and a half lays an egg and a half in a day and a half, how many eggs will six hens lay in six days?

100. ## Math Finance

How much interest does \$2560 earn in 17 months at a rate of 5 1/8 ?

101. ## English

I find it difficult to check these sentences since the punctuation is missing, the word choice is unclear and they contain grammar mistakes! I really hope you can help me. I think we need to simplify the sentences. 1) Mary Shelley's Frankenstein, unlike

102. ## Pattern Help?

I don't understand this rule... 0,1 1,8 2,15 3,22 4,29

103. ## physics

How much work is needed to stop a 20g bullet moving with speed of 150m/s

104. ## math

luke is thinking of two numbers whose sum is 14 and whose difference is 6. what numbers is luke thinking of?

105. ## french

what are regular and inregular french er verbes?

How is it possible that a can with a calculated density greater than 1.00g/ml could have floated (in water)

107. ## Math

what is scale

108. ## History

I have to write three major events or ideas from the book Tortilla Flat by John Steinbeck. I don't really know what could be considered as a major event. I know one can be that Danny died, falling into a ditch while he was drunk. Im not sure what else to

109. ## pre calc

from a distance of 50 feet from the base building, the angle of elevation to the top of the building is 68 degrees. estimate the height of the building to the nearest foot. a.124 b.20 c.19 d.46 i think its d?

110. ## World history

The spread of Bantu-speaking peoples over southern Africa before 1400 CE can be best explained by their , A. Conversion to Islam B. use of cavalry C. Centralized political systems D. Knowledge of agriculture

111. ## World history

Inca and Aztec empires were similar in that both A. Developed from Mayan civilization B. acquired empires by means of military conquest C. Independently developed iron technology D. Depended entirely on oral record keeping

112. ## World history

In comparison to medieval culture, Renaissance culture was A. More concerned with things of the earthly world B. disinterested in classical models C. Based less on urban vitality and expanding commerce D. More other-worldly and religious

113. ## MATH plz helo check my answer

-3 ≤ 2x - 5 < 13 i thing the answer is 1 < x < 9 and how would you graph this on a number line so MY NUMBER LINE IS 1 TO 9, SO AT 1 i have a closed circle and at 9 i have a open circle and its shaded in is it right

114. ## World history

Which of the following factors represents the most significant cause of the growth of cities in Afro-Eurasia in the period 1000-1450? A. Climate Change B. increased interregional trade C. Decreased agricultural productivity D. Increased invasions

115. ## World history

Whih of the following was the most important factor in enabling the Spanish to defeat the Aztec Empire ? A. The Spanish were able to field larger armies than in the Aztecs. B. Spanish tolerance of Aztec religion and culture weakened Aztec resistance. C.

116. ## World

In general, how did Islam spread to southeast Asia? A. Isolated regimes were revisited by dervishes and other Sufi sects. B. Islam was carried to southeast Asia from china C. trade to southeast Asia from Africa and Persia established Islamic centers on the

117. ## social studies

In what ways (political, technological, cultural) has the world of Andrew Jackson become "unrecognizable" from the world of George Washington?

118. ## World

What was the commen cultural trait of the urbanized trading ports of the east coast of Africa? A. A single ring family from the Malinke tribe. B. a commen descent from refuges from Badhdad C. The artist style of the nok culture D. Bantu - based and

119. ## World history

Unlike the Catholic Church, Byzantine Orthodox missionaries A. We're frequently merchants who traded while they preached. B. permitted people to use local languages in religious services and literature C. Were sent out the religious, not political,

120. ## Algebra

Which must be a whole number? A. The time it takes to drive 300 miles at 55 mph B. The area of a circle with a radius of 5 feet C. The area of a triangle with base of 15 and height of 9 D. The number of books in 12 bookstores

121. ## math

what is 12 1/5 - 4 4/5?

122. ## pre calc

sin 20 pi cos 9 pi cos 13pi/2 sin(-17 pi0 are all of these undefined?

123. ## Geometry Question fill-in-the-blank

When three or more lines intersect at one point they are, ______. Thank You ^0^

124. ## HCA/220

How would you ensure that your staff and other health care professionals are proficient in medical abbreviations and terminology?

125. ## physics

a comet experiences a uniforn acceleration from 60m/s to 183m/s what is the rate of acceleration?

126. ## Math

The second of two numbers is 6 times the first. Their sum is 77. Find the numbers.

What is the process we follow when adding and subtracting radical expressions? Explain the process and demonstrate with an example.

What is the process we follow when multiplying and dividing radical expressions? Explain the process and demonstrate with an example.

129. ## Calculus

1/a+1 + 1/a-1 I solved this out by multiplying the (a+1) by (a-1) and multiplying (a-1) with (a+1) To get (a+1)(a-1) as the denominator. Then I did the same with the numerators and got this: 1(a-1) + 1(a+1)/(a+1)(a-1) And I got 2a/(a+1)(a-1) But still

130. ## Trig

Half Angle Identities cosx = 7/25 greater than 270 deg and less than 360 Determine cos 1/2x a. -7rt2/10 b. 7rt2/5 c.7/25 d.-4/5 I get 7rt2/5 Is this correct??

131. ## Calculus

Integrate dx/xlnx. What method am I supposed to use? I'm totally lost.

132. ## Algebra

What is the process we follow when multiplying and dividing radical expressions? Explain the process and demonstrate with an example

133. ## Calculus

Integrate (1/2)sin(x^(1/2))dx. I've tried using u-substitution, with u=sin(x^(1/2)). du would then = ((1/2)x^(-1/2))(cos(x^(1/2))). As you can see, this only make the problem more complicated. I don't get what to do. Thank you in advance!

134. ## political science

The American people have long debated the extent of the Necessary and Proper Clause. Write a list of questions that could be applied to any proposed act of Congress to judge whether or not it is necessary and proper

135. ## English

10 words of merry things 3 words of frosty things 10 words of musical gifts 9 words of things with bells

what are the rules for these two problem? I can not figure it out. I spent 30 minutes trying to figure it out 1, 10 2, 9 3, 8 4, 7 lI know the left is increasing by one and the right is decreasing by one but I can't find an equation for this. and the