Questions Asked on
July 10, 2011

  1. chemistry

    Consider the reaction, C2H4 (g) + H2 (g)- C2H6 (g) where -137kJ of heat is released. How many kilojoules are released when 55.3g of C2H4 reacts?

    asked by Sandy
  2. Physics

    Determine the stopping distances for an automobile with an initial speed of 95km/h and human reaction time of 1.0s: (a) for an acceleration a= -5.2m/s^2 (b) for a= -6.7m/s^2

    asked by Emily
  3. chemistry

    a sheet of gold weighing 10.0g and at a temperature of 18.0 degrees c is placed flat on a sheet of iron weighing 20.0g and a tenp. of 55.6 degrees c. what is the final temp. of the combined metals? assume that no heat is lost to the surroundings.

    asked by Sade
  4. physics

    A space vehicle accelerates uniformly from 50m/s at t=0 to 182m/s at t=1 0.0s. How far did it move between t=2.0s and t=6.0s?

    asked by victor
  5. chemistry

    a 500ml sample of oxygen gas at 24 degree celsius was prepared by decomposing a 3% aqueous soution of hydrogen peroxide in the presence of manganese catalyst by the reaction: 2h2o2 = 2 h20 + o2... the oxygen was colletec by displacement of water. the total

    asked by Elizabeth
  6. English Grammar

    Each of the following sentences has an agreement error in it. Match the correct type of agreement error to the sentence: The patient was placed in the wheelchair with the fractured tibia. Although they seemed inflamed, the site of the previous craniectomy

    asked by Marjorie
  7. Calculus

    Find the largest and smallest values of the given function over the prescribed closed, bounded interval of: f(x)=(3x-1)e^-x for 0

    asked by Carly
  8. math

    A raffle has a $500 first prize, two $100 second prizes and five $25 third prizes. If 500 tickets are sold for $5 each find the expected value of buying a single ticket.

    asked by Shay
  9. CAL

    (1 pt) A spherical snowball is melting in such a way that its diameter is decreasing at rate of 0.3 cm/min. At what rate is the volume of the snowball decreasing when the diameter is 8 cm. (Note the answer is a positive number).

    asked by lan
  10. physics

    A space vehicle accelerates uniformly from 70 at t = 0 to 172 at t = 10.0. How far did it move between = 2.0 and = 6.0 ? So I used the forumla d=vt+.5a(t)^2 but for a i got 10.2 since a=(172-70)/10 Now im stuck for v, what do i put for v?

    asked by Engineer
  11. Chemistry

    a tank contains a mixture of 3.0 mol of nitrogen gas, 2.0 mol of oxygen gas and 1.0 of carbon dioxide gas at 25 degrees celsius and a total pressure of 10.0 atm. Calculate the partial pressure in torr of each gas in the mixture?

    asked by Elizabeth
  12. chemistry

    By using the bond enthalpies and bond energies in thermochemical equations to calculate the reaction enthalpy of; H + Br=2HBr

    asked by Gift
  13. physics

    Determine the stopping distances for an automobile with an initial speed of 95km/h and human reaction time of 1.0s: (a) for an acceleration a= -5.2m/s^2 (b) for a= -6.7m/s^2

    asked by victor
  14. Physics

    A truck travels at a constant speed of 28.0 m/s in the fast lane of a two-lane highway. It approaches a stationay car stopped at the side of the road. When the truck is still 1.2x10^2 m behind the car, the car pulls out into the slow lane with an

    asked by Capreeca
  15. Chemistry

    Oxygen has a boiling point of 90K, and nitrogen has boiling point of 77K. Which is a liquid and which is a gas at 80K? I tried to look into the phase diagrams, but I still don't understand. Can somebody please help and explain to me??? THANKS A LOT!!!

    asked by Cynthia
  16. English Grammar

    Each of the following sentences has an agreement error in it i.e. Verb tense agreement error, Subject/verb agreement error. Pronoun agreement error, Modifier placement error, Parallel structure error. Match the correct type of agreement error to the

    asked by Marjorie
  17. arithmetic

    find the 25th term of the arithmetic sequence 24, 19, 14, 9 ...

    asked by ashely
  18. English Grammar

    The following sentences has an agreement error in it. Match the correct type of agreement error to the sentence: The patient was placed in the wheelchair with the fractured tibia.

    asked by Marjorie
  19. chemistry

    How much heat (in ) is evolved in converting 1.00 of steam at 150.0 to ice at -55.0? The heat capacity of steam is 2.01 and of ice is 2.09 .

    asked by hannah
  20. English Grammar

    Each of the following sentences has an agreement error in it i.e. Verb tense agreement error, Subject/verb agreement error. Pronoun agreement error, Modifier placement error, Parallel structure error. Match the correct type of agreement error to the

    asked by Marjorie
  21. Physics

    A marathon runner runs at a steady rate of 15 km/h. When the runner is 7.5 km from the finish, a bird begins flying from the runner to the finish at 30 km/h. When the bird reaches the finish line it turns around and flies back to the runner, and then turns

    asked by Capreeca
  22. american government

    The presidents role in foreign policy increased largely because: A. Congress proved so inept in foreign affairs that the american people demanded a change. B. America became more of a world power. C. of the need to coordinate national economic policy and

    asked by Anonymous
  23. chemistry

    2 liquids a and b have vapour pressure of 500 mm hg and 200 mm hg .calculate mole fraction of a at which 2 liquids have equal partial pressure

    asked by Anonymous
  24. physic

    A person stands on a bathroom scale in a motionless elevator begins to move,the scale briefly reads only 0.75 of th person regular weight(means Fn=0.75mg).Calculate the acceleration of the elevator,and find the direction of acceleration.

    asked by noah
  25. chemistry

    How much heat (in ) is evolved in converting 1.00 of steam at 150.0 to ice at -55.0? The heat capacity of steam is 2.01 and of ice is 2.09 .

    asked by hannah
  26. Algebra

    Use the five steps for problem sovling. Company A charges $25 per month plus $0.22 per minute for cell phone service. Company B charges $35 per month plus $0.12 per minute. How many minutes of usage is needed in one month to make Company B a better deal?

    asked by Poochie
  27. chemistry

    Benzene has a heat of vaporization of 30.72kJ/mol and a normal boiling point of 80.1 C. At what temperature does benzene boil when the external pressure is 490 ? I think I have the equation setup, but I can't figure out how to solve for T2..please help

    asked by hannah
  28. algebra 2

    x^3+10x^2+31x

    asked by rmb
  29. chemistry

    Strontium has density of 2.64 and crystallizes with the face-centered cubic unit cell. Find the radius of the strontium atom

    asked by hannah
  30. algebra II

    the profit made when t units are sold, t > 0, is given by P=t^2-36t+320. Determine the number of units in order for P > 0 (a profit is made).

    asked by now
  31. college math

    The atmospheric pressure P in pounds per square inch (psi) is given by the formula below, where a is the altitude above sea level (in miles). If a city has an atmospheric pressure of 13.25 psi, what is its altitude? (Recall that 1 mi = 5,280 ft. Round your

    asked by joyce
  32. statistics

    If someone scored two Standard Deviations above the Mean on a standardized test where the Mean = 100 and the Standard Deviation = 15, then that person’s numerical score would be…?

    asked by Jenny
  33. CAL

    The altitude of a triangle is increasing at a rate of 2500 centimeters/minute while the area of the triangle is increasing at a rate of 4000 square centimeters/minute. At what rate is the base of the triangle changing when the altitude is 11500 centimeters

    asked by lan
  34. american government

    It can be said of regulatory commissions that: A.the commissioners pursue independent and impartial policies, regardless of politcal pressure from democrats or republicans in congress. B. unlike presidential appointees in other areas, regulatory heads

    asked by sue
  35. Chemistry

    2NaF + CaCl2 ¨ CaF2 + 2NaCl An excess of 0.20 M NaF is used to precipitate the calcium ions from a 50.0 mL sample of a calcium chloride solution. What is the concentration of the original calcium chloride solution?

    asked by Neha
  36. chemistry

    what is the Molarity (M) of a 0.87m aqueous solution of ammonia, NH3? The density of the solution is 0.823 g/mL. Answer: 0.71 M So I have: 0.823 g H2O+NH3/1 ml H2O+NH3 17.034 g NH3/1 mol 18.016 g H2O/1 mol 0.87 mol NH3/1 kg H2O I've tried this several ways

    asked by molality--->molarity
  37. math

    The length of a swimming pool is 22 ft. The width is 40 ft. If the volume of the pool is 2,500 ft³, which equation below could be used to find the depth of the pool?

    asked by Anonymous
  38. sociology

    The creation of minority group status largely depends on:

    asked by Anonymous
  39. Probability

    Start with a standard, uniformly shuffled 52-card deck, and draw the cards one at a time. What is the probability of drawing a King strictly before getting a Spade?

    asked by Anonymous
  40. help me to construct this in a good essay

    English 101AYR has now been in session for four weeks. In at least one full screen (one paragraph rather than an essay), answer the following question: Has your opinion about hybrid courses changed from day one to today? If yes, in what ways has it

    asked by noob
  41. CAL

    At noon, ship A is 30 nautical miles due west of ship B. Ship A is sailing west at 21 knots and ship B is sailing north at 15 knots. How fast (in knots) is the distance between the ships changing at 4 PM? (Note: 1 knot is a speed of 1 nautical mile per

    asked by LAURA
  42. chem

    If a 250 mL sample of water was cooled from 50.0˚C to 25˚C, how much heat was lost (in joules)?

    asked by Anonymous
  43. SAT Math

    A container in the shape of a right circular cylinder contains 12 liters of liquid when it is filled to 3/4 of its height. How many liters does it contain when it is completely filled?

    asked by Yuri
  44. algebra

    Which of the following expressions has 3 terms? 8x + y - z xyz y^3 + 1

    asked by Sally
  45. biology help

    Is photosynthesis only occurring during the daytime? What happens when there is no light? What is the relationship between light dependent and light independent reactions in photosynthesis?

    asked by miyagi
  46. Math

    Using correct mathematical notation and symbols, express the following in set-builder notation: Z = {16, 17, 18, 19, 20} I'm so confused with this....please help :(

    asked by Jen
  47. english

    I have to write two paragraphs, with a total minimum word count of 350 words, explaining what your point of view will be on credit card companies should not be on campus marketing to college students, and what you plan to accomplish in you paper

    asked by kathy
  48. Math-Can u help me Reiny?

    An electronics store surveyed every 8th customer who came into the store for a week. Of the 380 people who responded, 185 people watched movies on VHS tapes. 251 people watched movies on DVDs. 72 people watched movies both on VHS tapes and DVDs. i. Of

    asked by Jen
  49. social psychology

    3. Perceiving yourself to be a target of discrimination and prejudice can affect you negatively. Citing two (2) examples of each, explain how this may happen 4. Images of a new self can motivate us to change. Identify a “Desired Possible Self” and

    asked by sabrina
  50. calculus 1

    I just need help getting started. I can't figure out the equation I need to use! An airplane passes over an airport at noon traveling 500 mi/hr due West. At 1:00 pm, another airplane passes over the same airport at the same elevation traveling due North at

    asked by cindy
  51. Math

    How many positive 3-digit integers contain only odd digits?

    asked by Daniel
  52. Physics

    On a recent ski trup to Vermont, Mr Backman wanted to beat Mr S's ski jump recor. Mr B left the ski jump ramp with an initial velocit of 37.0 m/s and angle of 27 degrees from the horizontal. a) What is the maximum height theat Mr B reaches above the jump

    asked by Capreeca
  53. Spanish

    El abuelo de Guillermo le cuenta sobre un viaje en barco a Espana. Completa el parrafo con por o para. Cuando fui a Espana (12____) primera vez, se viajaba (13____). Estuve en el oceano (14____) diez dias (15____) una tormenta horrible. Pero, (16____) ser

    asked by Anna
  54. algebra

    mang pedring want to build square table the length is 30cm. longer than its height.... how would you represent the height of the table?

    asked by junica
  55. accounting

    purchase office supplies worth 50000.paying 20000 and 30000 on accounts.what is the debit and credit entry?

    asked by ginalyn bation
  56. Math

    Simplify the following expression, and rewrite it in an equivalent form with positive exponents. 24x^3y^-3/72x^-5y^-1 My answer was going to be: 24/72*x^3/x^-5=y^=3/y^-1

    asked by Ashley
  57. Math probabilty

    An amusement park, Dino World, considering adding some new attractions, conducted a study over several typical days and found that, of 10,000 families entering the park, 1020 brought just one child (defined as younger than age 12), 3370 brought two

    asked by sky
  58. Physics

    A ball is thrown with initial velocity Vo=20.0 m/s from the top of a 50.0m tall building. Find the velocity Vg with which the ball strikes the ground. Find time Ttotal it takes for the ball to move to the ground.

    asked by Myyke
  59. calculus 1

    I found the equation which was the pythagoras theorem and then took the derivative of the equation but not sure what to plug in where. Oh and I found C(t) to be 743.30 An airplane passes over an airport at noon traveling 500 mi/hr due West. At 1:00 pm,

    asked by cindy
  60. MATH

    A company makes three products X, Y and Z. Each product requires processing by three machines A, B and C. The time required to produce one unit of each product is shown below. Product X:- Machine A: 1 Machine B: 2 Machine C: 2 Product Y: Machine A:2

    asked by Anonymous
  61. Math

    A manufacturer makes two products A and B, each of which is processed in two departments, production and finishing. Each A takes 3 hours to produce and six hours to finish, whereas each B takes 5 hours to produce and 2 hours to finish. How many units of A

    asked by Anonymous
  62. chemistry

    I have a unit cube question to which the answer is given that I'm trying to figure out. The question is: If under conditions of high pressure & temperature, the crystalline structure rearranges to form a face-centered cubic unit cell, what is the new

    asked by unit cubes
  63. stats

    In each of the four examples listed below, one of the given variables is independent (x) and one of the given variables is dependent (y). Indicate in each case which variable is independent and which variable is dependent. I. Gas consumption; Miles driven

    asked by Celest
  64. math

    use implicit differentiation to find the slope of the tangent line to the curve (y)/(x-7y)=x^6+5 at the point (1,6/43)

    asked by lan
  65. Physics

    1. A person driving to the right and honks their horn. An observer standing behind the car, opposite its direction of motion would hear...(choose one) a. Higher Pitch b. Lower Pitch c. Same pitch as the driver please explain how you got to the answer

    asked by Tina
  66. statistics

    calculate the probability that a randomly selected student is a female if they are at most 30 years of age, there are 27 females out of 57 students.

    asked by angela
  67. chemistry

    Given the reaction of hydrogen and chlorine gases, calculate the moles of hydrogen that react to produce 4.20 mol

    asked by Anonymous
  68. intermediate algebra

    combine like terms. write all answers in order 9b^5+3b^2-2b^5-3b^2

    asked by swirl
  69. intermediate algebra

    find two algebraic expressions for the area of each figure. first ,regard the figure as one large rectangle, and then regard the figure as a sum of four smaller rectangles 3 t,t,5

    asked by swirl
  70. Physics

    A cannon placed at the top of a 100.0 m high cliff fires horizontally to a platoon of Hussars situated initially 1.0 km away from the base of the cliff. At what initial velocity should the cannon shell be fired assuming the hussars are moving with a

    asked by Lara
  71. physics

    A space vehicle accelerates uniformly from 70 at t = 0 to 172 at t = 10.0. How far did it move between = 2.0 and = 6.0 ? So I used the forumla d=vt+.5a(t)^2 but for a i got 10.2 since a=(172-70)/10 Now im stuck for v, what do i put for v?

    asked by Engineer
  72. biology

    What are coupled reactions? Describe the interactions between enzyme, substrate, active site and the induced fit model Explain how changes in temperature, and pH affect the function of enzymes Recognize the structure of ATP, and be able to identify some

    asked by noob
  73. Statistics

    foofy computes the correlation between an individual's physical strength and his or her college grade poing average. Using a computer, the correlation for a sample of 2000 people is r(1998)=+.08, p=

    asked by K
  74. Statistics 343

    A sample has a mean of 120 and a standard deviation of 20.0. Find the value of x that corresponds to each of these standard scores: a. z = 0.0

    asked by UoP
  75. Finance

    A firm has debt with a market value of $40 million and an equity value of $160 million. The rate the firm pays on its det is 8% and on its equity is 13%. The corporate tax rate in 35%. There firm s considering a project with the following cash flows: Year

    asked by Mary
  76. geography

    How do a country's size and shape affect its power and stability?

    asked by sherry
  77. biology help

    Does photosynthesis require energy? What type of energy reaction would photosynthesis be? Is photosynthesis an example of a coupled reaction?

    asked by miyagi
  78. soc 207

    . The nuclear industry is placing ads in popular magazines and newspapers, claiming that nuclear power is environmentally friendly, since it doesn’t contribute to the greenhouse effect. How do you respond to that claim?

    asked by tamika
  79. World History

    1. Among early hunting and gathering peoples, the commonly occurring mark that looks like a "P" is thought to stand for a A. favored animal B. woman. C. powerful male leader. (my answer) D. symbol for a calendar. 2. Charles Darwin supported the theory that

    asked by Amanda
  80. Chemistry

    If you produce 3.63 moles of Na2, how many moles of H2 was needed?

    asked by Joni
  81. Chemistry

    A 5.00L steel cylinder is filled with water vapor at 650mmHg and 100C. Calculate the density of the gas.

    asked by Anonymous
  82. @SraJMcGin Spanish

    El abuelo de Guillermo le cuenta sobre un viaje en barco a Espana. Completa el parrafo con por o para. Cuando fui a Espana (12____) primera vez, se viajaba (13____). Estuve en el oceano (14____) diez dias (15____) una tormenta horrible. Pero, (16____) ser

    asked by Anna
  83. Child Psychology

    In comparison to concordance rates for autism in dizygotic twins, monozygotic twins are _______ likely to develop the same illness. A. significantly less C. significantly more B. somewhat less D. somewhat more

    asked by Jasmin
  84. chem

    I have a titration of 30ml of .360 M H2C6H6O6 Its K1 =6.8E-5 K2 =2.8 E-12 With .280 M NaOH. It is a weak acid being titrated by a strong base Its a two step process with the ice table to find the eqpts. Ineed to list the volumes of NaOH needed for the

    asked by ted
  85. Child Psychology

    Which of the following statements is the simplest way to describe respiratory distress syndrome to someone who wants to understand it? A. It’s a cluster of breathing problems that often affects premature infants. B. It’s a breathing disorder mothers

    asked by Jasmin
  86. algebra

    simplify by removing the factors of 1 p^2-4/(p+2)^2

    asked by joe
  87. Social Studies

    When (gerrymandered) elections are conducted, all voters in a state choose from the same pool of candidates. Gerrymandered is the underlined term. True or False? I know it's false but I'm not sure which term to replace it with. I think it's at-large

    asked by anthony
  88. chemistry

    what is the starting temperatue of 150ml of gas when cooled to 33 degrees of celsius and a volume of 120ml?

    asked by Anonymous
  89. Math

    “On Monday afternoon Kelly withdrew 5% of the balance of her bank account to loan her friend some money. On Tuesday morning she deposited $100 into her bank account. She now has $25 more than she did on Monday morning. How much was in her bank account

    asked by Poochie
  90. Math ( Algebra)

    Short Answer: Raise the quantity in parentheses to the indicated exponent, and simplify the resulting expression. Express answers with positive exponents (-33xy^-1/66x^0y^-3)^2

    asked by Ashley
  91. social psychology

    Women have lower self esteem than men. Discuss how personal attitudes can affect or promote self-esteem, citing two (2) specific examples for each gender

    asked by sabrina
  92. Algebra 2

    write the standard form of the equation of the circle withthe given radius (8,0) and whose center is the origin

    asked by Rocke
  93. statistics

    calculate the probability that a randomly selected student is taller than 5 feet5 inches in height. there are 31 students out of the 57 students who are 5 feet 5 inches in height. I just want to know how to set this problem up.

    asked by angela
  94. intermediate algebra

    simplify. -2x^5(x^7)+(x^3)^4-(4x^5)^2(-x^2)

    asked by swirl
  95. Physics - Work

    A tennis racket is in contact with a 55 kg ball for 0.0050 s changes the ball's velocity from 30 m/s [E] to 40 m/s [W] over a distance of 0.0001 m. how much work is done on the tennis ball by the racket?

    asked by Allison
  96. math

    In 1995, the life expectancy of males in a certain country was 62.1 years. In 1999, it was 65.7 years. Let E represent the life expectancy in year t and let t represent the number of years since 1995. what is the linear function? Use the function to

    asked by elizabeth
  97. physics

    Using the inverse-square gravitational law, calculate the work required to lift a 1000-kg satellite from the earth's surface to an altitude of 100 mi and inject it into orbit at 17,500 mph. How long would a 300-hp engine have to be run to produce this much

    asked by paul smith
  98. Power generation

    need help 2. Large central power stations typically have a power output capacity of 1000 MW and convert about 35 percent of the input energy to electricity. Consider such a plant that burns coal with an energy content of 24 MJ/kg. 1. How much coal (tons)

    asked by paul smith
  99. american government

    As distinct from the patronage and executive leadership system, the merit system for managing the bureaucracy A. allows the president to appoint top officials of executive agencies,thus making the bureaucracy more responsive to election outcomes. B.

    asked by sue
  100. Physics

    he United States is currently considering standards to generate 20% of its electricity from renewable resource in the next 15 years. If this power is generated by wind turbines that generate 3 MW each, how many turbines will need to be installed in the

    asked by Paul smith
  101. Math

    Raise the quantity in parentheses to the indicated exponent, and simplify the resulting expression. Express answers with positive exponents (-33xy^-1/66x^0y^-3)^2 This is the answer i am getting from TRYING to follow my online book. Please Help Me. Thank

    asked by Ashley
  102. physics

    a body thrown vertically upward returns to the earth in 3sec what was the initial velocity of the body? what height did the body reach? neglect the resistance of air. The answer after solving is 14.7m/s and 11m. please tell me how the answer is arrived.

    asked by pavatharani
  103. Basic Algebra

    if 5 is added to a number and the sum is tripled, the result is 27 more than the number. Find the number

    asked by Catherine
  104. algebra II

    x^3+10x^2+31x

    asked by help
  105. algebra II

    use alaytical and graphical methods to solve the inequality. (3x+6/7x^2+5) > 0

    asked by help
  106. Physics

    A pilot maintains a heading due west with an air speed of 24o km/h. After flying for 30 min, he finds himself over a town that he knows is 150 km west and 40 km south of his starting point. a) Waht is the wind velocit, in magniture and direction? b) What

    asked by Capreeca
  107. algebra

    Solve the system. y=x+1 y=-2x+7 x= y=

    asked by brian
  108. physics

    A car starting from rest and moving with variable acceleration possess average velocities 5m/sec, 10m/sec, 15m/sec in the first seconf and third seconds. What is the total distance covered by the car in these three seconds?

    asked by Amie
  109. Physics

    A horizontal force presses the block of mass 10kg to the wall. What is the minimum magnitude of the applied force which can hold the block on the wall without accelerating it down if the coefficient of static friction (pico per second) between the block

    asked by Myyke
  110. Math

    Express the following in roster form: Set M is the set of natural numbers between fourteen and nineteen.

    asked by Jen
  111. chemistry

    Which has more grams of NaCl? A 2 molar solution in 2 Liters, or a 3 molar solution in 1.5 Liters?

    asked by g
  112. statistics

    I need to post some thought on using either the multiplication rule or probability to answer a question on my online statistics.

    asked by keri
  113. Child Psychology

    In terms of development, Piaget believed that A. child development is haphazard, random, and based on experience. B. cognitive development proceeds by stages that are universal across cultures. C. children learn in different sequences based on their

    asked by Jasmin
  114. MATH

    A manufacturer produces three types of radios: deluxe, standard and economy. Each radio uses three different types of transistors: P, Q and R. The deluxe radio uses 2 P's, 7 Q's and 1 R. The standard contains 2 P's, 3 Q's and 1 R, and the economy model

    asked by kIM
  115. Math-Is this right Reiny?

    Using correct mathematical notation and symbols, express the following in set-builder notation: Z = {16, 17, 18, 19, 20} {x | 15 < x < 20, x ∈ N}

    asked by Jen
  116. Child Psychology

    Researchers have concluded that A. the proportion of REM sleep to N-REM sleep is similar in infants and adults. B. REM sleep provides needed brain stimulation to neonates. C. REM sleep is mostly absent in neonates. D. the proportion of REM sleep to N-REM

    asked by Jasmin
  117. chemistry

    If I have CH3-CH3 and it undergoes a combustion reaction, what will be the products?

    asked by Tyrone
  118. chemistry

    Why can’t ethyne be turned into trans or cis isomers?

    asked by mike
  119. science

    in which of the following materials is the velocity of light greatest

    asked by mark
  120. english

    can someone help me revise/edit my anthropology survey paper Here is my paper attached to the question: Sociology in general, is the study of societies and groups of people that have familiar backgrounds, interests, or institutions. Some examples of

    asked by adriana
  121. Math

    Simplify the following expression squareroot -14 squareroot -56 (My answer is going to be 7)

    asked by Ashley
  122. algebra

    A number consists of two digits. The sum of twice the tens digit an 5 times the units digit is 19. If the digits are reversed, the new number is 54 less than the original number. Find the number

    asked by mutaz
  123. Algebra

    simplify the following expression and rewrite it in an equivalent form with positive exponents 24x^3y^-3/72x^-5y^-1 24*3*3*3/72*-5*-5*-5*-5*-5= This is how I have it started on my paper. my online book is down and im stuck. Thank you.

    asked by Michael
  124. Macroeconomics

    If GDP increases by 5 percent in the same that the deficit is run, What happens to gross debt as a percentage of GDP? What happens to the level of debt held by the public as a percentage of GDP? deficit was $300 billion

    asked by Autumn
  125. algebra 2

    1) In the general second-degree equation Ax^2 + Bxy + Cy^2 + Dx + Ey = F = 0, what is the discriminant and what does it tell you about the graph of the equation? 2) Which terms in a general second-degree equation (Ax^2 + Bxy + Cy^2 + Dx + Ey = F = 0) are

    asked by sandra
  126. human services

    where might I find the answer to this question. Ethical dilemmas that are faced in a drug rehabb center for women.

    asked by patiance
  127. algebra 1

    what is an equation of the line containing the given point and prallel to the given line; (5,-2);6x-7y=4

    asked by denise
  128. math

    factorize 1) x^2=5x-6 2) 6x^2-20=-7x 3) 6x^2-7x=-2

    asked by kibodee
  129. educational statics

    the average SAT score at a local university is (=60, and standard is (x=50. Assume that the university SAT score has a normal distribution convert a student score x=700 into z score

    asked by sandra
  130. ACT

    What do you think is an efficient way to study for the ACT on your own?

    asked by Lindsey
  131. Physics

    1)Consider a contour map for the region around a hilltop. a) at some point on the map, in which direction ( relative to the contour lines) is the direction of steepest ascent. b) what can you say about spacing of contour lines versus the steepness of the

    asked by Sarah (C)
  132. history

    !@#$%^& the presidemcy of thomas jefferson.do his action in office coincide with his political philosophy?

    asked by mary
  133. algebra

    evaluate: 7x + [x - (5 - x)]

    asked by Sally
  134. Probability

    A 30 year old can buy $25,000 life insurance for $15/month. If the probability that the 30 year old will die is 0.14% find the insurance companies expected profit for the policy. (I want this in terms of their annual expectation-not monthly expectation)

    asked by Anonymous
  135. chemistry

    Which has more alcohol? 200 mL of 3.2 % vol/vol beer or wine with 7% vol/vol alcohol and a volume of 100 mL?

    asked by g
  136. math 1A

    hey im having trouble with these math problem . if a=2 and d=7 6d-3a =? how do you solve and get the answer ?

    asked by stephanee
  137. chemistry

    If I put a red blood cell into pure water it will swell and burst, why is this?

    asked by g
  138. chemistry

    Which of the following will lie flat on a plane? Methane, ethane, ethene, ethyne, chloromethane?

    asked by g
  139. math

    Simplify −(−6a^3 + 0.2a^2 − 7)

    asked by Anabell
  140. English

    Lying in a Hammock at William Duffy's Farm in Pine Island, Minnesota? What is the significance of this poem? What does the author mean by the last line? I don't understand what this poem is about and any help would be greatly appreciated! Over my head, I

    asked by Joe
  141. Math

    The table below shows the number of hours required in each of two departments to make one unit of various products A, B and C. For example, product B requires 1 hour of time in department I and 3 hours in department II. HOURS REQUIRED PER UNIT OF PRODUCT

    asked by Anonymous
  142. algebra

    simplify by removing the factors of 1 p^2-4/(p+2)^2

    asked by joe
  143. statistics

    For a particular sample of 63 scores on a psychology exam, the following results were obtained. First quartile = 47 Third quartile = 81 Standard deviation = 11 Range = 68 Mean = 70 Median = 71 Mode = 77 Midrange = 55 Answer each of the following: I. What

    asked by Celest
  144. Math

    A restaurant offers a $20 dinner deal. Dinners share one of 4 appetizers, get 2 of 6 entrees and share one of 3 desserts. How many dinners can be selected? (To make it easier, let’s assume they don’t pick 2 of the same meal)

    asked by Shay
  145. algebra

    Darians IRA has fallen 12.6% to 142,500.49. What was the value of her IRA at the beginning of the year?

    asked by Poochie
  146. bio

    would these substances pass easily through the pores of dialysis tubing? and EXPLAIN why. 1-glucose 2-na^+ 3-insulin 4-estrogen 5-hydrogen ion

    asked by susan
  147. ehtnics

    Describe, as if you were a member of that subordinate group, where the group originated, how it came to the United States, and one or two locations in the United States where members of your group live. Be creative in your fictional descriptions, and

    asked by toasha
  148. social psychology

    Women have lower self esteem than men. Discuss how personal attitudes can affect or promote self-esteem, citing two (2) specific examples for each gender

    asked by sabrina
  149. Algebra

    Use the five steps for problem solving. Enrollment at a particular online university is 11,600. There are seven times as many students who work full time as there are students who do not. How many students work full time and how many do not?

    asked by Poochie
  150. math

    simplify the following expression and rewrite it in an equivalent form with positive exponents 24x^3y^-3/72x^-5y^-1 Thanks!

    asked by Michael
  151. Algebra

    It is possible for a quadratic equation to have no real-number solutions:Solve : x2 + 5x + 3 = 0

    asked by tom
  152. science

    what is motion?

    asked by shab
  153. math

    The average (arithmetic mean) of x and y is m, where m does not equal to 0. What is the average (arithmetic mean) of x, y, and z? a.)m b.)4/3m c.)3/2m d.)5/3m e.)2m

    asked by Grace
  154. algebra

    evaluate: 7x + [x + (5 - x)]

    asked by Sally
  155. math

    Dirk Nowitzki of the Dallas Mavericks has a 87.7% career free throw record. Assuming that free throws represent independent events, find the probability of Nowitzki a. Getting 3 free shots in a row b. Missing exactly one of 3 free shots

    asked by Shay
  156. Management

    When examining the average salary of a job, it is advisable to consider the size of the companies used in the analysis and apply the ____ statistic to calculate the appropriate amount.

    asked by Anonymous
  157. Economis

    Name some goods that were at one time free goods are now economic goods?

    asked by Stan
  158. math

    An inlet pipe on a swimming pool can be used to fill the pool in 28 hours. The drain pipe can be used to empty the pool in 42 hours. If the pool is one-third filled and then the drain pipe is accidentally opened, how long will it take to fill the pool?

    asked by brian
  159. chemistry

    If I have 80 grams of NaCl in 100 grams of water at 20 C, is that undersaturated, saturated or oversaturated?

    asked by g
  160. chemistry

    If the H+ concentration goes from 1.0 x 10-5 to 2.0 x 10-4 moles/Liter what will happen to the pOH?

    asked by g
  161. algebra

    Simplify −(−6a^3 + 0.2a^2 − 7) Thank you for helping me with this one :)

    asked by Anabell
  162. math homework

    log 7 (80)

    asked by aaron
  163. Math

    Can the word "SLIME" be played from the letters I, E, N, L, S, T, R as the first move in a Scrabble game? Explain your answer

    asked by Jen
  164. chemistry

    If there is a radiation that has a half life of 10 days and we have it for 110 days, what will be the fraction of radiation left?

    asked by g
  165. chemistry

    If I change the number of protons in Magnesium from 12 to 13 and make a new element, what is that process called?

    asked by g
  166. chemistry

    What kind of conditions would I want if I wanted to get as much CO2 to go into a soda as I could?

    asked by g
  167. chemistry

    How many isomers of CH3-CH2-CH3 can I make?

    asked by Tyrone
  168. Stats

    Can you tell me what ∑xy means? Like is in the sum of all x times y or what?

    asked by Carol
  169. math

    A 30 year old can buy $25,000 life insurance for $15/month. If the probability that the 30 year old will die is 0.14% find the insurance companies expected profit for the policy. (I want this in terms of their annual expectation-not monthly expectation)

    asked by anonymous
  170. his103

    How was the Mediterranean Society under the greeks and Romans alike and different?

    asked by sharon
  171. Math

    Simplify the following expression; express in terms of i. squareroot -44 (My answer was 8i and I don't think that is right) Thanks A bunch

    asked by Shelly
  172. Algebra

    Use the five steps for solving problems Enrollment at a particular online university is 11,600. There are seven times as many students who work full time as there are students who do not. How many students work full time and how many do not?

    asked by Poochie
  173. Algebra

    Use the five steps for problem sovling. Christy’s plan for a rectangular dog pen is too small. The perimeter needs to be more than 118 feet. If the width should be nine feet shorter than the length, what should the length be?

    asked by Poochie
  174. stats

    For a normal distribution where mx= 80 and sx= 10, the distribution model fits well to test scores of N = 20000 students.

    asked by sandra
  175. algebra 2

    write the standard form of the equation of the circle that passes through the given point (8,0) and whose center is the origin

    asked by Rache
  176. chemistry

    How to find the pH level in solid soap using an experiment?

    asked by shani
  177. math

    a. 13/35 = 1/5 27/73 = 2/3 16/64 = 14 b. 4/5+2/3=6/8; 2/5+3/4=5/9; 7/8+1/3=8/11 c. 8 3/8 – 6 ¼ = 2 2/4 5 3/8 – 2 2 3 = 3 1/5 2 2/7 – 1 1/3 = 1 1/4 d. 2/3*3=6/9; 1/4*6=6/24; 4/5*2=8/10

    asked by judy
  178. math

    factorizr. 1) x^2=5x-6 2) 6x^2-20=-7x 3) 6x^2-7x=-2

    asked by kibodee
  179. grammar

    what is the compound subject of the following sentence tamara and janet served soup and salad at the luncheon

    asked by katherine miller
  180. Grammar - to Leslie

    http://www.jiskha.com/display.cgi?id=1310266925 See my last response.

    asked by Writeacher
  181. MATHS

    Does anyone have a full answer to question 7 in the Australian Mathematics Enrichment, Noether??? The one about inequalities

    asked by Sun Woo Han
  182. MATHS

    Does there exist a five digit number abcde such that it is equal to the sum of the cubes of its digits a^3+b^3+c^3+d^3+e^3??? Must have detailed answers.

    asked by Sun Woo Han
  183. History-Civil War

    What was the most important technological or technical advance made during and for the Civil War ?

    asked by Joanne
  184. educational statics

    how often does the university admit an exception student with a SAT score of x =700 or above Asample of 36 students (N)- 36 were randomly selected with mean (=11,and standard deviation (x=12. the sample mean score X=9.

    asked by sandra
  185. MATHS

    prove that (x+y)^3-(x-y)^3-6y(x^2-y^2)=8y^3

    asked by NIHAL
  186. algebra

    how do i change a fraction to a decimal? i really don't understand the movement of the decimal.

    asked by lola moye
  187. math

    What is the perimeter of a circle that is 10m?

    asked by heather