# Questions Asked onMarch 7, 2010

1. ## physics

You want to swim straight across a river that is 76m wide. You find that you can do this if you swim 28 degrees upstream at a constant rate of 1.7m/s relative to water. At what rate does the river flow? The angle is measure from the river bank (directly

2. ## Physics

A 63 kg canoeist stands in the middle of her 19 kg canoe. The canoe is 3.0 m long, and the end that is closest to land is 2.5 m from the shore. The canoeist now walks toward the shore until she comes to the end of the canoe. a. When the canoeist stops at

3. ## College Chem II

Determine the [H3O+] of a 0.160M solution of benzoic acid.

4. ## math

I wrote my question wrong. It should be write 25000000 in expanded notation using the power of 10

5. ## Precalc Repost

Hello, I'm trying to figure out how to do this problem, but don't know where to begin. I think some information is missing. Blood Pressure: The function P=120+30Sin 2pi(t) models the blood pressure (in millimeters of mercury) for a person who has a high

6. ## Math

A spinner has regions numbered 1 through 21. What is the probability that the spinner will stop on an even number or a multiple of 3? Okay so I am lost. I understand that the probability of an event is the # of ways an event can occur over the total # of

7. ## Chemistry

Can zinc (Zn) react with one of these: Al(NO3)3 aluminum nitrate Mg(NO3)2 magnesium nitrate Zn(NO3)2 zinc nitrate Cu(NO3)2 copper nitrate?

8. ## Physics

Light from a sodium lamp ( wavelength= 589 nm) illuminates a narrow slit and is observed on a screen 75 cm behind the slit. The dstance between the first and third dark fringes is 7.5 mm. What is the width (in mm) of the slit? Cant seem to get the answer

9. ## chemistry

C6H6 freezes at 5.5°C. At what temperature will a solution of 10 g of C4h10 in 200g of C6H6 freeze? The molal freezing point depression constant of C6H6 is 5.16°C/m?

10. ## APChem

If an air bubble passes unnoticed through the tip of a buret during a titration (where a weak nonvolatile acid HA is the analyte) , the calculated molar mass of HA would be too high, too low, or not affected? I thought it would be too high, since an air

11. ## chemistry

What is the balaced net ionic for this equation: PbNO3+CuSO4-->PbSO4+CuNO3

12. ## physics

A boy throws a rock with an initial velocity of 2.47 m/s at 30.0 degrees above the horizontal. How long does it take for the rock to reach the maximum height of its trajectory?

13. ## chemistry

A solution is prepared by adding 50 mL of .050 M HCL to 150 mL of .10 M HNO3. Calculate the concentrations. I know I need to find the [H+] and [OH-] but im not sure how.

14. ## Word Problem

A math teacher gives two different tests to measure students' aptitude for math. Scores on the first test are normally distributed with a mean of 25 and a standard deviation of 4.6. Scores on the second test are normally distributed with a mean of 68 and a

15. ## Math

In parallelogram PQRS, diagonals PR and QS intrsect at M. Which is always true? (1) PR is perpendicular to QS (2) PM is congruent to RM (3) PQ is congruent to QR (4) triangle PMS is congruent to triangle PMQ

16. ## Physics

An electric field exerts a force of 3.00 E-4 N on a positive test charge of 7.20 E-4 C. The magnitude of the field at the location of the charge is?

17. ## APChem

Is this true or false?:A buffer can be destroyed by adding too much strong acid. I thought that a buffer can be destroyed by adding too much weak acid, but I'm not sure...

18. ## chemistry

a chemist reacts 8.85g or iron with an excess oh hydrogen chloride to form hydrogen gas and iron(II)chloride.calculate the theoretical yield and the percentage yield of hydrogen if 0.27g H2 are collected

19. ## science

How many grams of CuSO4 .5H2O are needed to prepare 50 ml of 0.30M CuSO4 solution

20. ## Math

I can't make this work. Please help? Insert parentheses when necessary to make the number sentence true. 5-3x4/6+4=-9 Thank you!

21. ## college physics

A rope is used to pull a 3.57 kg block at constant speed 5.10 m along a horizontal floor. The force on the block from the rope is 6.82 N and is directed 15° above the horizontal. (a)What is the work done by the rope's force? (b) What is the increase in

22. ## chemistry 1

When butane undergoes complete combustion , the products are CO2 and H2O C4H10(g) + O2(g)-> CO2(g) + H2O(g) What is the value of the coefficient for oxygen when this equation is balanced

23. ## math

Citizens of Franistan pay numerically the same percent in income tax as they make in Rupees per week. (Example: If one makes 15 Rupees per week, he pays 15% in income tax.) What is the most a person can make after taxes are deducted in this country?

24. ## computer science

ineed help with c++. i am using code blocks and i have a problem with the compiler. when I run this code ¡é # include using namespace std; int main() { cout

25. ## Poetry

How does Walt Whitman's poem "I Hear America Singing" relate and differ from Langston Hughes's poem "I,Too." PS: I need enough information to write an essay.PLEASE!!!!!

26. ## chemistry

A solution is prepared by mixing 0.0400 mol CH2Cl2 and 0.0800 mol CH2Br2 at 25 degrees C. Assume solution is ideal, calculate the composition of the vapor (in terms of mole fractions) at 25 C. At 25 C, vaporpressure of pure CH2Cl2 and pure CH2Br2 are 133

27. ## Finance

Dr. J. wants to buy a Dell computer which will cost \$2,788 four years from today. He would like to set aside an equal amount at the end of each year in order to accumulate the amount needed. He can earn 7% annual return. How much should he set aside?

28. ## physics

A plane flies directly from city A to B, which are separated by 2300mi. From A to B, the place flies into a 65mi/hr headwind. ON the return trip from A to B, the wind velocity is unchanged. The trip from B to A takes 44 min less than the trip from A to B.

29. ## Chemistry

In an experiment, a student mixes equal volumes of 0.0020M Pb 2+ ions with 0.0040M I- ions. The trial ion product is? PbI2 Pb 2+ + 2I- How do you determine the final concentration of Pb 2+ and I-?

30. ## History

Using the documents, analyze African actions and reactions in response to the European Scramble for Africa. DBQ HELP NEED a Thesis or example

31. ## Physics

A neutron collides elastically with a helium nucleus (at rest initially) whose mass is four times that of the neutron. The helium nucleus is observed to rebound at an angle θ'2 = 44° from the neutron's initial direction. The neutron's initial speed is

32. ## college

a researcher reports an F-ratio with df=3,36 from an idependent-measure research study. a-how many treatment condition were compared in the study? b-what was the total number of participant in the study

33. ## Math 30

What is the simplest equivalent trigonometric expression for csc^2 A - 1/cot A csc A?

34. ## math

George has a bag of marbles. Inside the bag are 5 red marbles, 3 green marbles, and 2 blue marbles. He draws out two marbles in a row, without replacement. What is the number of outcomes?

35. ## math

Friendly's Clothing Store bought handkerchiefs, six for \$10, and sold them 4 for \$10. They made \$60 profit. How many handkerchiefs did they sell?

36. ## Statistics

The structure of a two-factor study can be presented as a matrix with the level of one factor determining the rows and the levels of the second factor determining the colums.With this structure in mind,describe the mean differences that are evaluated by

37. ## chemistry

Which of the following mixtures will result in the formation of a buffer solution when dissolved in 1.00 L of water? i) 0.50 mol HClO2 and 0.25 mol HCl. ii) 0.50 mol HClO2 and 0.25 mol NaOH. iii) 0.50 mol NaClO2 and 0.50 mol HClO2. iv) 0.50 mol NaClO2 and

38. ## physics

Any dielectric material other than vacuum has a maximum electric field that can be produced in the dielectric material before it physically or chemically breaks down and begins to conduct. This maximum electric field is called dielectric strength. The

39. ## Physics

A neutron collides elastically with a helium nucleus (at rest initially) whose mass is four times that of the neutron. The helium nucleus is observed to rebound at an angle θ'2 = 44° from the neutron's initial direction. The neutron's initial speed is

40. ## statistics

how many ways can an IRS auditor select 5 of 12 tax returns for an audit?

41. ## algebra

find the y-intercept and x-intercept 2x+3y=12 3x-6y=72

42. ## physics

You walk 80 m to the north, then turn 60 degrees to your right and walk another 45 m. Determine the direction of your displacement vector. Express answer relative to east :)

43. ## Chemistry

If 16.9 kJ are released when 1.50 g of O2 reacts with an excess of NO, complete the thermochemical equation below. 4 NO(g) + 3 O2(g) 2 N2O5(g) ÄHrxn=???

44. ## grammar

i really don't understand these sentences.... the instructions are to edit the following sentences to eliminate problems with s and ed verb forms and with omitted verbs, if a sentence is correct, write correct after it. ,,,, Sentence one: Have there ever

45. ## Math

What is the probability that the random variable has a value between 0.1 and 0.5? The random variable is .125.

46. ## vocabulary

Teaching was INNATE to Mrs.Jones as both her parents had been A)CRUEL B)TEACHERS C)STUDENTS D)DULL

47. ## to Mary - re "Math (basic statistics) ..."

Your post has been removed. Once you write up YOUR THOUGHTS, please re-post, and someone here will be happy to comment.

48. ## physics

There are two conducting spheres of different sizes, both with the same negative charge. If they are connected with a conducting wire, the charge would therefore flow from the smaller to the larger. Am I correct? Thanks!

49. ## math

A projectile is fired directly upward with a muzzle velocity of 860 feet per second from a height of 7 feet above the ground. a. Determine a function for the height of the projectile t seconds after it’s released. b. How long does it take the projectile

50. ## math

find the coordinates of the points whose images under the translation (x,y)-->(x-3,y+4) are the followings: a. (0,0), b. (-3,4), c. (-6,-9), d. (7,14), e. (h,k)

51. ## Calculus

Find the number c that satisfies the conclusion of the Mean Value Theorem. f(x) = x/(x + 4) [1, 8]

52. ## math

George has a bag of marbles. Inside the bag are 5 red marbles, 3 green marbles, and 2 blue marbles. He draws out two marbles in a row, without replacement. What is the number of outcomes?

53. ## physics

A woman pulls a 23 kg suitcase using a rope attached to the suitcase at an angle of 38 degrees to the horizontal. The coefficient of static friction of the suitcase with the floor is 0.3 and the coefficient of kinetic friction is 0.2. a) Draw a situation

54. ## Chemistry

What will be the [Cl-] when equal volumes of 0.10MNaCl and 0.20MAlCl3 are combined? A. 0.35M B. 0.15M C. 0.30M D. 0.70M

55. ## math

Nature's best wants to combine nuts they sell for \$3.60 a pound with dried fruit they sell for \$2.40 a pound to create a trail mix. How much of each snack should they use to make 10 pounds of trail mix that would sell for \$3.30 a pound? Thank you!

56. ## Physics

A person swings a 0.33 kg tether ball tied to a 5.4 m rope in an approximately horizontal circle. (a) If the maximum tension the rope can withstand before breaking is 11 N, what is the maximum angular speed of the ball?

57. ## Math

The weekly rental cost of a 20 foor recreational vehicle is \$129.50 plus \$0.15 per mile. -Find a linear function that express the cost C as a function miles driven m. - What is the rental cost if 860 miles are driven? -How many miles were driven if the

58. ## Physics

The Place you get your haircut has two nearly parallel mirrors 5.0m apart. As you sit in the chair, yoru head is 2.0 m from the nearer mirror. Looking toward this mirror, you first see your face and then, farther away, the back of your head. ( The mirrors

59. ## physics

A 9600 kg boxcar traveling at 15 m/s strikes a stationary second car. The two stick together and move off with a speed of 7.0 m/s. What is the mass of the second car?

60. ## chemistry

What is the pH of the solution that results from mixing the following four solutions together? (1) 150. mL of 0.250 M NaCl (2) 300. mL of 0.200 M HCl (3) 100. mL of 0.050 M HNO3 (4) 450. mL of 0.200 M NaOAc any help is greatly appreciated!

61. ## Chemistry

Determine the boiling point elevation of H2O in the following solution a 2.5 m solution of C6H12O6 in H2O All i need is the formulas because i don't know how to solve it Thank you :l

62. ## American History

New England factories were initially located in the countryside because? Why

63. ## Physics

There are two particles of charge +Q located on the top left and bottom right corners of a square. What is the direction of the net electric field at the point on the bottom left corner of the square? And also what would be the general equation be for

64. ## math

A total of four students belong to all three teams, the baseball, basketball and football team. These four students represent 10% of the baseball team, 25% of the basketball team and 8 1/3 % of the football team. There are 20 students who are just on two

65. ## physics

How do I go about in solving this? A spy satellite is in circular orbit around Earth. It makes one revolution in 6.01 hours. (a) How high above Earth's surface is the satellite? ___ km (b) What is the satellite's acceleration? ___m/s2

66. ## Precalculus(NEED HELP ASAP PLEASE!!)

NEED HELP ASAP PLEASE!! A high sound level of 120 dB is regarded as the threshold of pain for the average listener. If the threshold of hearing is 10^−12 watts/m^2, then the intensity of the sound corresponding to 120 dB is ____________ watts/m^2.

67. ## Biology

This is to do with genetics and drosophila. There are 3 pairs of characteristics - body colour, eye colour and wing length. The parents are all from pure-breeding lines. First Cross P1: male-grey body, normal wings female-black body, vestigial wings F1:

68. ## chemistry

Camphor, C16H16O which has a freezing point of 174°C, has a freezing point depression constant of 40.0°C/m. Explain the usefulness and the limitation of camphor as a solvent for determination of molecular weights. For whose kind(s) of solute would

69. ## math

you purchase an suv for \$26,000. A year later the car is worth only \$24,800. If the value of the car continues to depreciate at that rate, a. find the linear equation that determines the value of the car based on the number of years you own it. b. when

it cost \$2 per day to place a one-line ad in the classifieds plus a flat service fee. one day cost \$3 and four days cost \$9. write a linear equation that gives the cost in dollers, y, in terms of the nunber iof days,x. find the cost of a six-day ad.

71. ## Chemistry

What is the specific heat of a substance if 26.0 kJ are required to raise the temperature of 250. g of the substance from 34.0°C to 201.0°C?

72. ## Chemistry

A solution of NaCl in water has a vapor pressure of 18.1 torr at 25 degrees C. What is the mole fraction of NaCl solute particles in this solution? What is vapor pressure at 45 degrees C? Vapor pressure of pure water is 23.8 torr at 25C and 71.9 torr at

73. ## chem--buffers

Calculate [H30+] in a solution that is 0.0525M HCl and 0.768M NaC2H3O2. Ka(HC2H3O2)= 1.8 x10^-5. the way i did it is that i used the given molar of HCl to find the moles of Hydronium in the acid, and then i used that to find the moles of OH- in it, using

74. ## physics

(how do I go about solving this, i know i need to conver 88days to secs and that would be 126,720. but I don't where to go from there, help please) What is the average linear speed of Mercury about the Sun? (The distance from the Sun to Mercury is 5.80

75. ## college chem

In the reaction PCl5(g) ---> PCl3(g) + Cl2 (g) 0.200 mol of PCl5 is introduced into a 2.00 liter vessel. At equilibrium, the concentration of Cl2 is found to be 0.0500 molar. Find Kc for the reaction.

76. ## Chemistry

I am confused about why this is the answer to a practice problem I was given. (answer is c). Could someone explain why/why not for each answer? 2) Solution A is made from 1 L of water and 0.1 moles of Na(CH3COO), and Solution B is made from 1 L of water

77. ## 4gr math

if the diameter of a circle is one foot, then the radius of the circle is how many inches?

78. ## french

can someone check my french essay on pocket money and improve where possible very much appreciated Je recois dix livres d'argent de poche par semaine de mes parents. Pour gagner mon argent de poche je dois aider mes parents a la maison et je dirais que

79. ## Math

Question: The total yearly food bill for a family of four is \$8589.88. To the nearest cent, what is the mean weekly food bill? Would I take \$8589.88 divided by 52.365 (this is the number of weeks in a year) to get the answer \$164.04?

80. ## chemistry

For potassium metal, the heat of fusion is 2.33KJ/mol, and the entropy of fusion is 6.93 J/mol-K. At what temperature does potassium melt?

81. ## chemistry

calculate the molecular weight of a substance which freezes forms a 7.00% by mass solution in water which freezes at -0.89°C.

82. ## Physics

Okay, I saw this one previously posted, but the answer it kept leading me to was wrong. A sports car of mass 1400kg (including the driver) crosses the rounded top of a hill (radius 88m) at 23 m/s. Find the normal force exerted by road on the car. I thought

83. ## P. Chemistry

Can anyone direct me on how to solve this problem? All of the variables are makin my head spin--not sure how to organize them. If you can give equations to use that would help.Thnx! 1 L of an impure water solution has a freezing point of -11 °C. Which of

84. ## PHY131

a bullet is fired from a gun that is 2.0 meters above flat ground. the bullet emerges from the gun with a speed of 250 m/s. a) how long does the bullet stay in the air before it hits the ground? b) At what horizonatal distance from the firing point does

85. ## economics

research the factors behind economic growth in Hong Kong and Singapore. Which of these methods of encouraging growth would you suggest to a newly industrialized economy?

86. ## English

I have to record observations for every main character on "The Simpsons", like the satirical characteristics, then I have to describe the comments or criticism made about society through the character. When I watched the season 10 episode "Lisa gets an A",

87. ## CHEMISTRY

If a pinch of flour is placed in water, does it form a coarse suspension, colloidal dispersion, or true solution? What about pepper? I thought both would be a coarse suspension

88. ## Algrebra

Write the equation of the line passing through the given point with the given slope. a) point (3,-2) with slope of m=5/3 Answer: y-(-2)=5/3x-3 b) point (3,9) with slope m=(-2/7) Answer: y-9=-2/7x-3 Correct?

89. ## physics

If there are two conducting spheres of different sizes, but of a same negative charge and they are connected with a conducting wire, does the charge flow from one sphere to the other?

90. ## Stastics

When we convert x-value to z- score and use Standard Normal distribution, which of the following statements is true? a) The mean of z-score is zero and standard deviation of the z-scores is the same as the standard deviation of original data b) The mean

91. ## calculus

Given the position function of an object moving in a straight line, measured in meters, from the origin. Describe the motion in all phases throughout the duration of the motion from time t=0 to t=11 sec. s(t)=t^3 - 15t^2 + 50t State when the object is

92. ## chemistry

Consider a room temperature 0.30M ammonia buffer at pH 9.5. As you raise the temperature of the buffer, would you expect the pH to change? Explain. (Pka of NH4+ is 9.26)

93. ## calculus

Evaluate lim as x-> 0 square root (x+1) - square root (2x+1) / square root (3x+4) - square root (2x+4)

94. ## college financial planning

How do i prepare journal entries when they ask you to record perpetual system merchandising transactions of a company?

95. ## chemistry

For AgI(s), would you expect the molar solubility to be a linear function of temperature? Why or why not? If not, how would you plot molar solubility and temperature to get a linear function?

96. ## social studies

acess the presidency of Thomas Jefferson. do his actions in office coincide with his political philosophy? Support your answer

97. ## math

write each decimal as a fraction or mixed number in simplest form 0.78

98. ## pre-calc

Hello, I'm trying to figure out how to do this problem, but don't know where to begin. I think some information is missing. Blood Pressure: The function P=120+30Sin 2pi(t) models the blood pressure (in millimeters of mercury) for a person who has a high

99. ## math

Find the four-digit number described by these three clues. 1) The first digit is one-third of the third digit. 2) The fourth digit is twice the second digit. 3) The first and third digits add up to twice the sum of the second and fourth digits.

100. ## South Park

What websit can i go to to watch full episodes of south park?

101. ## World History

What are the similarities and differences between the life of factory workers in the US and the lives of the manchester mills workers?

102. ## English

Thank you very much for your help. Here are some more sentences I need to prepare for tomorrow. 1) The mirror is presented as a truthful object. When someone is mirroring in it (is it correct: or "when someone looks at himself in it?) it reflects the truth

103. ## Chemistry

What is the molar mass of a molecular solute when 5g of the solute dissolved in 150g of phenol lowers the freezing point 1.5C? do i have to use all three formulas to solve this one?

104. ## Geometry

I need help with properties of a TRAPEZOID, please! -Are opposite sides congruent AND parallel? -Are opposite angles congruent? -Are the diagonals congruent? -Do the diagonals bisect eachother? I went on many sites to try and find the answers to these

105. ## Algrera

Write the equation of the line passing through the given two points? a) (3,7) and (4,7) Answer: m=7-7/4-3 b) (2,7) and (2,9) Answer: m=9-7/2-2 c) (5,-3) and (1,7) Answer: m=7-(-3)/1-5 Correct?

106. ## synonym

which word is a synonym of verbiage? a}terse b}wordiness c}curt d}concise p.s.which do u think?

108. ## soc 402

how do Compare and contrast the roles the prison system, the family, and the social stratification system play in either contributing to or alleviating the problem of crime?

109. ## grammar

punctuation of passage. one thing that happened over the summer i grew even more grim takes a look at me one day and he goes all that walking you do it must be stetching out your legs and carrying poor kevin around that seems to be putting real muscle on

110. ## math

The Fibonacci sequence of numbers begins 1,1,2,3,5,8,13,21,34,55,…and continues by the rule: every number is the sum of the two previous numbers. a. Determine the next five (eleventh through fifteenth) elements of this sequence. b. Compute the ratio of

111. ## chemistry

Consider a room temperature 0.30M ammonia buffer at pH 9.5. As you raise the temperature of the buffer, would you expect the pH to change? Explain. (Pka of NH4+ is 9.26)

112. ## physics

a car is moving at 40km per hour what is the velocity in meters per second?

Simplify completely: -3(4-9)+6-2(-8+5)

114. ## College Chemistry

What is the pH of the following solutions? 1)a solution that is 5.4×10−2 M in HClO4 and 3.0×10−2 M in HCl 2)a solution that is 1.80% HCl by mass (Assume a density of 1.01g/mL for the solution.) Please help! I am so confused!

115. ## math

if the line y=2x+b and the parabola y^2=8(x+2) meet exactly at one point,then what is the value of b

116. ## correct punctuation

One thing that happened over the summer, I grew. Grim takes a look at me one day and he goes, "all that walking you do, it must be stretching your legs, and carrying poor Kevin around that seems to be putting real muscle on you." He's not that heavy, and

118. ## chemistryy

what is the relationship between the pressure of a gas and the absolute temperature when the volume is kept constant ?

119. ## introduction to literature

CAN THIS BE POSTED TO A LINK THAT CAN LATER BE REMOVED? 1. Creating Art - After completing the required readings for this week, discuss how you see the theme of creating art developing in the different stories and poems. What did you learn about the human

120. ## calculus

Evaluate lim as x-> 1 (x^2 + |x -1| - 1 ) / ( |x-1| )

121. ## physics

How does the resistance of a piece of metal change if both its length and its diameter are reduced to one half their original values? .. im confused because i don't know what the shape of the metal is...please help!

122. ## social studies

do thomas jeggerson action in office coincide with his political philosophy? Support your response with examples

123. ## Geometry

Perimeter of a right angled trangle is 40 cm. Hypotenus is 17cm. Find the area. Urgent help required. Thanks in advance

124. ## calculus

Point P(a,b) is on the curve square root of x + square root of y =1. Show that the slope of the tangent at P is : - square root of (b/a).

125. ## chemistry

What is the value of [HCO3- ]/PCO2 for someone with mild acidosis, with a blood pH of 7.30? 1. 0.038 2. 0.38 3. 0.030 4. 0.30 5. 3.0

126. ## Programming

Can you create a java program that will make a CPU SCHEDULER w/ First Come First Serve,Round Robin,Priority Scheduling(Preemptive & Non-Preemptive)& Shortest Job First(Preemptive & Non-Preemptive) that will compute for Waiting time,Average waiting

127. ## iscom305

Explain the operational components of planning , sourcing,making and delivery

128. ## his 135

how did the involvement of the u.s in the politics of southeast asia,korea, and vietnam impact the u.s political climate of the 1950's? any help is appriciated history is my worst subject

129. ## Computer Viruses

A virus that infects an application program is known as a _________. a) boot sector virus b) macro virus c) Trojan horse d) file virus From what I understand, both macro viruses and file viruses affect application programs such as Word and Excel. So which

130. ## English

Why would Judy Brady use the letter I 67 times in her essay," I want a Wife" ?

131. ## physics

skydiver not in freefall because wind resistance prevents her from accelerating indefinitely. If skydiver weighs 750N whats the force due to wind resistance after reaches terminal velocity but before her parachute opens traveling at 200 km.hr

132. ## physics

How will the weight of 20kg change if it was in a lift that accelerates at 4m/s

133. ## Word Problem.

A game is played by flipping three coins. If all three coins land heads up you win \$15. If two coins lands heads up you win \$5. If one coin lands heads up you win \$2. If no coins land heads up you win nothing. If you play \$4 to play, what are your expected

134. ## Stastics

Bank of Connecticut estimated that balance on credit cards have follows Normal Distribution mean \$845 with standard deviation \$270. Calculate probability that balance on a single credit card is greater than \$750

135. ## math

What is the number directly below 99 when the triangular array below is continued? 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

136. ## math

Use the digits 9, 8, 7, 6, 5 and 4 each once to make two three-digit numbers that will produce the maximum product when multiplied.

137. ## AP Calculus

Find the differential of: y = u*cos(u) I'm trying to submit my homework to webassign, and I got -usin(u)+cos(u)du and it said i was wrong, please help me out, thank you.

138. ## economics

what are the arguments of high income, middle income, low income and corporate tax payers who are critical o the Canadian government's income tax policy.

139. ## chem

What is the volume of 0.25M PMSF & volume of 14.3M 2-mercaptoethanol needed in 25 mL of 20 mM sodium phosphate? MW of sodium sulfate = 137.99

140. ## chemistry

when 10.0 grams of an unknown substance is dissolved in 50. grams of water, the new freezing point becomes -3.00C. What is the molar mass of the compound? For this question can some one tell me the formulas I need to solve for this problem and I can fill

141. ## Math 30 Trig

What is the value of theta if 9 cos^2 theta + 3 cos theta = 0 where 90 degrees < theta < 180 degrees?

142. ## math

a truck driver traveled at an average speed of 48 miles per hour on a 100-mile trip to pick up a load of freight. On the return trip with the truck fully loaded,the average speed was 40 miles per hour. Find the average speed for the round trip.

143. ## 4gr math

...,450,470,480,__, __, __,... what are the nextthree numbers in this counting sequence?

144. ## English

Hello. I o not know whether this question is to do with English or Ict. What are the media terms? Bu he way i have trie to research it on the internet and i have not found any results. Please help.

145. ## Biology

What is the source of the papin and bromelain found in commercial meat tenderizer preperations?

146. ## English

I forgot to include the following sentences, which I really hope you can check, too. 1) The woman is horrified by (or at?) looking at her image reflected in the mirror because she can't accept growing old. (is the gerund correct?) 2)The mirror can be

147. ## Microbiology

describe the factors that may alter the expression of the cultural characteristics of bacteria?

148. ## The Simpsons

I don't have DVDs of simpsons shows from Season 10, and I can't watch the full episode on YouTube. Is there a website that has the descriptions of the entire Simpsons family and their satirical characteristics throughout the Episode, "Lisa Gets an A"?

149. ## math

At Maryland Middle School, there are 9 mathematics classes. If two mathematics classes are selected for a school competition, what is the number of possible outcomes?

relative frequency table is 50–59 and the corresponding relative frequency is 0.2 what is the .2 represent

151. ## Heat transfer: conversion

is it possible to convert British thermal unit/ pound*Rankine to pound force*ft/pound mass Fahrenheit? if so, what is the conversion to and from?

factor completely x^4-16=0

153. ## college math

find the vertex and graph of y=.3x2+1.8x-2

154. ## Math

Solve each formula for N r/n + 2 = p t=100 (n+3) pv/nr = T 8a + 2n + 6b

155. ## Algebra II

Among 100 coffee drinkers, 36 said that they preferred their coffee black and the rest did not prefer their coffee black to those who prefer non black coffee. Find a ratio for each of the following and write it as a ratio of integers in lowest terms. I do

156. ## math

Find a polynomial with integer coefficients such that (sqrt3 + sqrt5) is a root of the polynomial

157. ## Math

How do i solve the following by factorization: 1) 7.7^2-2.3^2 2) 43*56+43*44 I know how to do these manually but not by factorization.

158. ## Math

How do I find the Mean, Median and Mode from a frequency table?

159. ## PHYSICS

How can an election be particle and a wave at the same time?

160. ## physics

an object travels in a straight line at a constant acceleration for 6 seconds.in the first 2 seconds it travels 18 metres and in entire 6 seconds it covers 102 metres. find the acceleration.

161. ## French

I've been working hard on this french composition and I'm afraid I can no longer pick out the mistakes and accurately proofread it. The following composition is on Toulouse Lautrec and Montmartre: Un des plus célèbres post impressionnistes faisait

162. ## college english

I was told in class to find a piece of "biased writing" and use the knowledge about critical thinking. how would i know whether an article is biased? really confused. also, it's a 1000 word essay, so it'd be really nice to get answer!

163. ## western civilization

Judaism and Islam shere the belief that ________?

164. ## help plzz

can some 1 help wit my synonym question plz

165. ## com 220

How do you determine weather to quote, paraphrase, or summarize a source?

166. ## Math

How do you study for math???

167. ## English

Does anyone know whether the book "The Alchemist" by Paulo Coelho have a deeper meaning that "Listening to your heart and following your dreams"? Thank you :)

168. ## Math

Please help me! I don't even know where to start :( my teacher took this question up on friday but i was sick, and we have a test tomorrow! -Car A travels from Barrie to Subuiry at an average speed of 90km/h -Car B travels from Subury to Barrie at an

169. ## Math

Find the zeros of f(x)=(x-1)^2 + 5(x-1)+4

170. ## World History

What is the life of a factory worker in the US like?

171. ## college fundamentals of manageral economics

Evidenced by the recently reported quarterly growth the US economy seems to be on its way out of the most sever recession since the Great Depression. The unemployment picture however remains rather bleak. Still over 14 million Americans are without jobs.

172. ## Trigonometry

Where does the graph of y = tan theta intersects the graph of y = -1.

173. ## Algebra II

An outboard motor calls for a fuel mixture that has a gasoline – to –oil ratio of 50 to 1. How many pints of oil should be added to be gallons of gasoline?

174. ## math

Find the smallest positive whole number with exactly ten positive factors and list the factors.

175. ## schocial studies

what do you draw for the sentence so many people are hungry and they don't have any food so a lot of people died.

176. ## Social Studies

Where could I find good information on school desegregation?

177. ## re

can u help me find soem good info on the History of Key Sacred Texts for fjudaism. that would be great for a powerpoint presentation thanks

178. ## calculus

Evaluate lim as x-> 0 square root (x+1) - square root (2x+1) / square root (3x+4) - square root (2x+4)

179. ## calculus

Point P(a,b) is on the curve square root of x + square root of y =1. Show that the slope of the tangent at P is : - square root of (b/a).

180. ## PHYSICS

A rectangular piece of gold is 3.6 cm long and 3.5 cm wide. How deep is the piece when it displays a resistance of R = 1.51 ìù for a current that flows along the depth-direction? --- p is found in a table...right? and then.. R=pl/A R=pl/(2dw+2wl+2dl)

181. ## calculus

Differentiate and simplify completely. [x^2(1-x)^3] / [(1+x)^3]

182. ## College Stats

An urn contains 4 green, 6 blue and 10 yellow chips. You pay \$5 to draw a chip from the urn. Here are the rules of the game: if you draw a green chip, the dealer returns you your bet and gives you an additional \$5. if you draw a blue chip, the dealer

183. ## CHEMiSTRY

what is the relationship between the pressure of a gas and the absolute temperature when the volume is kept constant ?

184. ## Chemistry

Determine the molar mass of an unknown nonelectrolytic solute when 7.55g of the solute dissolved in 125g of aniline raises the boiling point to 185.5C

185. ## math

Determine whether the following argument is correct. If it’s not correct, explain what is wrong with the argument and change the minor premise to make a correct argument. If a triangle is equilateral, then it has three equal sides. Triangle ABC doesn’t

186. ## his 135 MRS SUE

you recently answered my question but this is part of it yes but what was the impact of the u.s political climate of the 1950's?

187. ## math

write 25000000 to the power of 10

188. ## Math

How many games are played in a soccer competition if there are 7 teams and all teams play each other twice?

189. ## Trigonometry

Where does the graph of y = tan theta intersect the graph of y = -1 where n is any integer?

190. ## calculus

evaluate the integral: (x^3)/((x^2)+1)

discuss how economic and technological factors have influenced the success or failure of the designer collette Dinnigan.

192. ## algebra

solve and graph-14x>-56?

193. ## Math

An urn contains 4 green, 6 blue and 10 yellow chips. You pay \$5 to draw a chip from the urn. Here are the rules of the game: if you draw a green chip, the dealer returns you your bet and gives you an additional \$5. if you draw a blue chip, the dealer

194. ## English A

What is the Interpretation for the poem " A contemplation of Flowers" ?

195. ## social study

Hi everyon I need help with my home work pls help me. I have to write aboot surfing competition. Like I am a reporter and I have to write artical about that. where and when, who won and how, what happend to looser and what kind of outfit surffer wear (

196. ## Physics

Hi, I have the following question: 1. The index of refraction for a prism is given by the equation: n = 1.58 − (6.41 x 10^4)λ where λ is the wavelength in meters. Light is incident at 28°. Find the exit angle ß for light of a) 800 nm b) 633 nm c) 540

how did the involvement of the u.s in the politics of southeast asia,korea, and vietnam impact the u.s political climate of the 1950's? any help is appriciated history is my worst subject

198. ## Chemisty

A solution contains 20g of C^6H^12O^6 in 250g of water. What is the freezing-point depression of the solvent? What is the Freezing point of the solvent?

199. ## social studies

what made the mongols powerful conquerors?

200. ## Maths

I am requuired to plot a graph given the linear function: F:x maps onto 2x + 1/2 using the domain 3 is less than o equal to x, and x is less than or equal to 10. What would the x values be?

201. ## English

I.ct is computers. We are doing english media. I cant find the media terms generally?

202. ## Communication Studies

I need to find a short feature story. Can someone please show me some examples of these? Thanks!

203. ## cook

GENERAL USE FOR USE WHEN USING COOKING METHODS

204. ## College employee benefits

1. What is qualified plan? 2. What is qualified for tax deduction?

205. ## math

a girl flipped a coin 4 times, what is the probability that she gets 3 heads and 1 tails? Using a tree diagram

206. ## physical science

Does sound travelfaster in warm or cool air?

207. ## Computer Information

1) The major disadvantage to backing up your data on CDs or DVDs is that they are _____ a) not writable b) slow c) volatile 2) A virus that infects an application program is known as a _____. a)a boot sector virus b) Trojan horse c) file virus. On #!, I

208. ## math

i have a test coming up and i have no idea how to do rotations on a cartesian coordinate system. please help me!!

209. ## chemistry

what is the ph of a solution formed by dissoving

210. ## English

Thank you for your last corrections! Can you check following sentences, too please? 1) The narrator may be internal to the story, that is a character in the story, either the protagonist or a witness. It (?) may also be a voice outside the story, who tells

211. ## com 220

How do you determine weather to quote, paraphrase, or summarize a source?

212. ## science

you have a picture of a mouce on the west window where would the shadow be in an hours time and what would course it to be there ie the earths spin axis the sun

213. ## World HIstory

What is the Rescue of Dunkirk?

214. ## algebra

find the slope x+6y=12

True or False? in the west indies slaves were sold in exchange for land rights?

216. ## HR

If a company sends several employees to an out of town conference and after hours one of the employees hangs a nude pin up poster on the door, names it after a female supervisor he does not like. It is the responsibility of his manager who saw the poster

217. ## math

translate the following argument into symbolic form and determine whether it's logically correct by constructing a truth table. -ifthe team wins, then the team remains in the playoffs. If the team stays in the playoffs, then the championship is within

218. ## CHEMISTRY

Is non-dairy creamer a colloidal dispersion

219. ## college STATISTICS

Sample of 80 people randomly asked in casino shows that average lost per person is \$160 with a standard deviation ó = \$40. Based on this data create a 99% confidence interval for population mean. Does loss of \$180 for single person contradict expectation?

220. ## math

point(-2,-4) point (-6,-1) put in y=mx+b

221. ## math

two look out situations, which are 25 miles apart along the coast on a north-south shoreline, spot an approaching yacht. One lookout station measures the direction to the yacht at N33 degrees E, and the other station measures the direction of the yacht at

222. ## English

Thank you for your last corrections! Can you please check the following statements,too? Thank you very much in advance. 1) She finds it very satisfying when she gets the right verdict. She can garantee that with Calstra telephone services he will make

223. ## french

how would you say 'it's a market town'?

224. ## math

convert each of the following rational numbers to the form a/b, where a and b are integers and b not equal to 0.

225. ## Math

f(x)=2x^2+1 and g(x)=3x-2 find f(x+h)-f(x)

226. ## donna

3x+4Y=13 (2,7)

y=3x+2

228. ## Math

t=100 (n +3) PV/NR= T 8a + 2n = 6b r/n + 2 = p

229. ## English

It is to do with like camera angles etc.?

230. ## science

how do you do covelent bonds? (dealing with atoms/elements)

231. ## math

a city block 500ft by 500ft is an unobstructed paved lot, except for a small office building 100ft by 100ft, centered in the middle of the block. What's the shortest distance from the SW corner to the NE corner, going through the paved lot and along (but

232. ## Algebra

solve for x: -3(x^2+2)=102

233. ## quantative reasoning

Gateway, Inc., did not declare or pay any dividends during fiscal 1999 or fiscal 1998. What do you suppose is the primary reason for this?

234. ## calculus

Given F(x) = ax+3, x>5 8 , x=5 x^2 + bx + a, x

235. ## organic chem

In assigning priority for chiral centers would Br attached directly to the C with a single bond have a higher priority than CH3CH2I attached to the same C with a single bond.? C-Br C-CH3CH2I

236. ## Social studies

How do I get a D if F to a B or A

238. ## college math

suppose that in a class of 50 students, 12 are married and 20 live at their parent's homes. two of the married students live at their parents' homes. a. draw a venn diagram of this information. b. how many students are single and don't live at their

239. ## math

m=7/8 point(5,-5) put in y=mx+b form

240. ## 4gr math

what does one yard equal

241. ## french

how would you say 'a minster' not a minister

242. ## french

how would you say a 'model village'?