Questions Asked on
August 18, 2012

  1. Science(Chemistry)

    HCL+Al=AlCl3+H2 What is the ionic equation,the spectator ions and the overall or net ionic equations?

    asked by Timothy
  2. math 213

    The amount of money in cents in a jar containing some nickels and d dimes and some quarters if there are 4 times as many nickels as dimes and twice as many quarters as nickels

    asked by susan
  3. MATH

    You wish to mentally estimate the total cost of items that have the following prices: $1.85, $.98, $3.49, $9.78, and $6.18. Rounding off the items to the nearest half-dollar, your estimate of the total cost of these items is A. $22.50. B. $22.30. C.

    asked by Sara
  4. Chem

    Consider the reduction of 4-t-butylcyclohexanone. If the procedure calls for 153 mg of 4-t-butylcyclohexanone, what mass of sodium borohydride should be added?

    asked by Hannah
  5. math

    In the following, write an expression in terms of the given variables that represents the indicated quantity: a. The cost of having a plumber spend h hr at your house if the plumber charges $30 for coming to the house and $x per hour for labor b. The

    asked by mary
  6. math

    The amount of bacteria after n min if the initial amount of bacteria is q and the amount of bacteria triples every 30 sec. (Hint: The answer should contain q as well as n.)

    asked by mary
  7. Chemistry

    Assume your sample spots are 1 cm above the bottom of the TLC plate. What happens if you put the plate in a developing chamber that has 1.2 cm of developing solvent? A. The solvent will move up the plate by capillary action faster. B. The sample spots will

    asked by JEN
  8. psychology

    1)As a volunteer subject in a sleep research lab, Conrad is routinely awakened each time he shows physiological signs of entering REM sleep. As a result, we would not be surprised to discover that, during Session 19, when Conrad is left undisturbed all

    asked by rami
  9. English

    What is the sentence pattern for: The waterfall rushed down the steep hillside. options: s-v-io-do s-lv-pa e-v-s s-lv-pn s-v-do s-v-do-oc quest pattern s-v

    asked by Matthew
  10. Chemistry

    What is the mass/ vol% ethanol in an ethanol water solution with density of 0.875g/ml and containing 65% ethanol by volume? The density of pure ethanol is 0.789g/ml? My calculation 0.875g/ml x 1000ml x 0.65/ 46.06 = 12.34m 12.34/0.789g = 15.6g I am not

    asked by Fai
  11. math

    joanne picked 15 more than twice as many apples as her sister. Her sister picked 35 apples.

    asked by diana
  12. Chemistry

    Consider the reduction of 4-t-butylcyclohexanone. If the procedure calls for 153 mg of 4-t-butylcyclohexanone, what mass of sodium borohydride should be added?

    asked by Hannah
  13. business math

    Word Problem 11-17 Hafers, an electrical supply company, sold $3,100 of equipment to Jim Coates Wiring, Inc. Coates signed a promissory note May 12 with 5.50% interest. The due date was August 22. Short of funds, Hafers contacted Charter One Bank on July

    asked by kadija
  14. Physics

    The drag coefficient = 0.354 The mass of car = 1200 kg rolling resistance = 180 N Air density = 1.181 kg m^-3 Frontal area = 1.88 m^2 What is the deceleration at a speed of 82 km h^-1 when the car is taken up to high speed and then allowed to coast down on

    asked by Alex
  15. math

    The quotient of 5/31 divided by 15/23, reduced to the lowest fraction, is A. 23/93. B. 93/23 or 4 1/23. C. 75/373. D. 115/465. Is it b?

    asked by Sara
  16. college physics

    a delivery truck is 5 km away from a car. the two started at the same time and headed at the same direction. the delivery truck accelerates at 3m/s. if the car should overtake the truck in ten minutes, what should be the acceleration of the car?

    asked by Anonymous
  17. math

    Rewrite the following using mathematical symbols: a. Q is equal to the set whose elements are a, b, and c. b. The set containing 1 and 3 only is a proper subset of the set of natural numbers. c. The set containing 1 and 3 only is not a subset of {1,4,6,7}

    asked by susan
  18. math

    consider the following statement: if a circle with its center at the origin has a chord with slope m, the equation of the right bisector of the chord is y=mx. Is this statement true or false? explain

    asked by sarah
  19. business math

    Ron Prentice bought goods from Shelly Katz. On May 26, Shelly gave Ron a time extension on his bill by accepting a $3,500, 8.80%, 150-day note. On August 31, Shelly discounted the note at Roseville Bank at 9.80%. (Use Days in a year table.) What proceeds

    asked by kadija
  20. math

    The following sets of ordered pairs are functions. Give a rule that could describe each function. A.{(5,3),(7,5),(11,9),(14,12)} B. {(2,5),(3,10),(14,7),(5,26)}

    asked by mary
  21. Science

    When you are focusing an object under the microscope, explain why some parts are in focus and some part are out of focus?

    asked by Amelia
  22. math

    what is the gross profit percent on a item bought for 3.50 at wholesale price and then sold at 5.00 for retail price

    asked by brittney
  23. Geography

    How has the location of South Asia both prevented invaders and invited the influence of other cultures?

    asked by Tempesta
  24. Physics

    In a fairground ride a child of mass 37 kg stands against the inside surface of a circular cylinder of radius 3.9m that rotates around its vertical axis of symmetry. The cylinder has an angular speed of 1.3 rad/s and an angular acceleration of 0.12 rad

    asked by Alex
  25. algebra

    A speedboat moves at a rate of 21 km/hr in still water. How long will it take someone to ride the boat 60 km downstream if the river's current moves at a rate of 9 km/hr?

    asked by nola
  26. math

    The following sets of ordered pairs are functions. Give a rule that could describe each function. A.{(5,3),(7,5),(11,9),(14,12)} B. {(2,5),(3,10),(14,17),(5,26)}

    asked by mary
  27. math

    Tell whether each of the following is true for all sets A, B, or C. If false, give a counterexample. c. A¿(BUC) = (A¿B) UC d. (A-B)¿A=A e. A-(B¿C) = (A-B) ¿ (A-C)

    asked by susan
  28. psychology

    1)As a volunteer subject in a sleep research lab, Conrad is routinely awakened each time he shows physiological signs of entering REM sleep. As a result, we would not be surprised to discover that, during Session 19, when Conrad is left undisturbed all

    asked by rami
  29. Math: Story Problem

    A buffet-style restaurant has 18 tables that seat 23 people each. A church group of 401 has rented the restaurant for a banquet. If the pastor of another church, his wife, and their nine children come as invited guests, what is the least number of people

    asked by Losa
  30. math

    A speedboat moves at a rate of 21 km/hr in still water. How long will it take someone to ride the boat 60 km downstream if the river's current moves at a rate of 9 km/hr?

    asked by nola
  31. English III Proofread and tips (:

    Hello! Could someone proofread this summary for me and give me some tips? Thanks so much! In Daniel Smith’s article, The Anxious Idiot, he discusses anxiety issues. He begins the article with an introduction to his anxiety disorder and proceeds to tell

    asked by Claire`
  32. college algebra

    graph the function and state the vertex axis of symmetry, the intercepts, if any: f(x)=x^2-8x+15 Please show work so i can understand this. thank you

    asked by alli
  33. logic

    A recent study of 100 employees from six departments of a major corporation found 65% to be sleep deprived. The researchers concluded that the majority of corporate employees are sleep deprived. The researcher’s conclusion is suspect because it

    asked by Anonymous
  34. Science(Chemistry)

    Mg+H2O=MgOH+H2 What is the ionic equation,the spectator ions and the overall or net ionic equations?

    asked by Timothy
  35. math

    If two sets are subsets of each other, what other relationships must they have?

    asked by mary
  36. math

    the radius of a spherical tank 0.7 meter. how many liters of water can the tank hold?

    asked by rachel
  37. english

    Why do you think credibility is important when you are building a persuasive case?

    asked by conley
  38. math 213

    The following sets of ordered pairs are functions. Give a rule that could describe each function. A.{(5,3),(7,5),(11,9),(14,12)} B. {(2,5),(3,10),(14,7),(5,26)}

    asked by susan
  39. Science(Chemistry)

    Explain what would happen when bromine water is added to potassium iodide solution and what is its balanced chemical equation?

    asked by Timothy
  40. English 11

    When writing an article summary i have to say if i agree with, disagree with, or qualify the main points, what does qualifying the main points mean?

    asked by Anonymous
  41. chemistry

    A CUBIC PIECE OF METER MEASURES 3.00CM ON EACH EDGE. IF THE METAL IS NICKLE WHOSE DENSITY IS 8.90G/CM^3.WHAT IS THE MASS OF CUBE

    asked by kem
  42. economic

    A socialist believes that wealth should be spread evenly throughout society. What characteristic of socialism is designed to achieve this goal? A. The government controls the centers of economic power. B. Central planners make all decisions about the

    asked by Keisha
  43. math

    If a man runs for an hour and a half at 8 miles an hour due south; and then he continues south on a bus traveling at 55 miles an hour, for 24 minutes. How far did he travel?

    asked by pam
  44. Intro to Social Work

    Your role is as a social worker for a group of low-income tenants of an apartment building who have no heat in their building. The landlord is attempting to raise the rent but the tenants cannot afford the increase. You have brought the parties together

    asked by Robin
  45. math

    every math class at super fun time high school has 31 students and every science class has 18 students. the school offers 4 more math class than sciencs. if the school has 418 students, how many of each class does the school offer.

    asked by niko
  46. Art

    Hello, can somebody please send me a link to a website that explains how african masks grew.. (first came about) I cannot find a website that explains how the masks were first made, etc.

    asked by Chula
  47. physics

    Hi guyys, could you help me with this question. The center of a circular floodgate of radius 0.5 m is located in a dam at a depth of 2 m beneath the free surface of the water contained by the dam. Calculate the force exerted by the water on the floodgate.

    asked by Josh
  48. math

    The following sets of ordered pairs are functions. Give a rule that could describe each function. Please show your work. A.{(5,3),(7,5),(11,9),(14,12)} B. {(2,5),(3,10),(14,17),(5,26)}

    asked by mary
  49. math

    determine the equation of each line: a) slope 3.4 passing through point (-2, -4) b) slope -5 and y-intercept -0.7

    asked by jessica
  50. epidemiology

    In a fictitious study, 100 out of 1000 people aged 60 years and over were positive in detecting breast cancer using Tumour Biopsy (gold standard). Using mammography, 90 of breast cancer patients and 135 healthy persons were also positive by this test. (I)

    asked by Ekrem
  51. aig math

    the sum of 2 numbers is 77. one number is 2 1/2 times as big as the other number.find the difference between the 2 addends.please show how you got your answer. my answer is 72.6, am i right if not please tell me why and how.

    asked by lidia
  52. English

    I need a copy of Level 6 Shurley English capitalization and punctuation Rules. Plz help!

    asked by Kreston
  53. Algebra 2

    Solve each inequality. 0.75b < 3

    asked by Michaela
  54. Geometry

    If a circle with center O has equilateral triangle AOB inscribed with sides 10 inches long. If OC is perpendicular to AB at P, what is the length of AP in inches?

    asked by Ashley
  55. Spanish help

    This is a written assignment. Will someone please help check whether it is grammatically correct. Instructions: Think of where you live in relation to the nearest airport. Write down directions on how to arrive at the airport from your house, using the

    asked by cris
  56. chemistry

    Determine the final temperature when 10g of steam at 100C mixes with 500g of water at 25C. I have 4.184x 10(100-x) + 40700 x 10= 500 x (x-25) x 4.18. The book has 10/18 instead of 10 on left hand side of equation. Why??

    asked by Nancy
  57. algebra

    find the following for the function f(x)= (x+5)^2(x-1)^2 a) find the x and y intercepts for the polynomial function f b) determine whether the graph of f crosses or touches the x axis at each x intercept C) put all information together to obtain the graph

    asked by alli
  58. math

    my average results from the last 4 maths exams was 18 out of 25.what mark do i need in my fifth exam in order to increase the everage by 3%

    asked by don
  59. math

    if (asquare-bsquare)sintheta=2abcostheta=asquare+bsquare then prove that tantheta=asquare-bsquare/2ab

    asked by akhtar
  60. math

    the end points of a line segment are A (-7, -1) and B (5,5) determine the equation of right bisector of AB show that the origin 0,0 lies on the right bisector of AB

    asked by cam
  61. algebra 2

    I am stuck this is how far I have gotten x^2+6x=-1 (b/2)^2=(6/2)^2 =

    asked by BERNIE
  62. ACT

    How many real ACT prep guide are there?

    asked by noorie
  63. math

    trying to solve fraction problem 2/3+3m/5=31/15 been too long....

    asked by Anna
  64. Math

    The amount $180.00 is what percent greater than $135.00? A. 35% B. 75% C. 133.33% D. 33.33% Is it b?

    asked by Sara
  65. Maths

    A drinking straw of length 21cm is cut into 3 pieces the length of the first piece is x cm the second piece is 3 cm shorter than the first piece the third is twice as long as the first piece state term of x to represent the sum of of the length {2} write

    asked by RAHEIM
  66. Spanish writing

    Could you please check the grammar of my writing assignment. Thank you very much! Discuss your opinions and ideas about three different popular political issues. Include how you think things should be and what you wish certain people would do about it.

    asked by raj
  67. College algebra

    graph the function using transformations, show and state , a) the domain, B) range c) the asymptotes F(x)= 1 ----- -4 x^2 please show work!

    asked by alli
  68. math 213

    Tell whether each of the following is true for all sets A, B If false, give a counterexample. A

    asked by susan
  69. math 213

    Tell whether each of the following is true for all sets A, B If false, give a counterexample. a. A-B= A-0 (with slashed O) b. AUB (with line over AUB) = AUB (with line over A and a line over B)

    asked by susan
  70. math

    sven is thinking of two numbers. the sum is 12. the diffrence is 4. what are the two numbers?

    asked by peace
  71. math

    a number of teachers were to receive 6 pens each ,but needed 4 more pens for them to be equally divided.if each teacher received 9 pens, 25 more pens would be necessary.how many pens are there

    asked by don
  72. math

    sue has some ducks and some goats,if there are 36 legs altogether,what is the greatest number of goats possible

    asked by don
  73. college physics

    a delivery truck is 5 km away from a car. the two started at the same time and headed at the same direction. the delivery truck accelerates at 3m/s. if the car should overtake the truck in ten minutes, what should be the acceleration of the car?

    asked by Anonymous
  74. math

    john and tom race around a circular track,divided like the face of a clock,into 12 sections.if john gives tom 4 sections start in advance and runs half as fast as tom.at what point on the track will he overtake tom

    asked by wan
  75. math

    If a person made .89 each and every week for 7 years. How much would he have made?

    asked by susan
  76. math

    there are 4 packets of muesli sold for every 3 packets of bran.The owner sold 84 packets of muesli and bran today.how many packets of muesli did the store sell today

    asked by wan
  77. algebra2

    can you help me to solve for completing the squar x^2+18x=-4

    asked by BERNIE
  78. algebra 2

    could you help me with completing the table for x^2-25=0,x^250 I am haing trouble with this

    asked by BERNIE
  79. scientist

    hypothesis

    asked by mopntez
  80. math

    Erica's average rate going uphill was 80% of her average rate going downhill over the same route, and it took Erica 10 minutes longer to go up the hill than to go down the hill. What was the total number of minutes Erica spent going uphill and downhill?

    asked by Aaron
  81. chem

    do this using the appropriate number of sig figs 320.44 − (3104.1/2.6) i got -880 as my answer and it said to check my sig figs. I thought it was all the numbers up to the ones place

    asked by Hannah
  82. statistics

    Suppose the mean height of a population is 65 inches with a standard deviation of 1.5 inches. What is the z value for a height (x) of 67 inches?

    asked by deja
  83. English 11

    How can you countenance even one state outlawing a fundamental right? Indeed, half a century ago, states’ rights was the cry of those committed to continued segregation and discrimination. is that a example of metaphorical language?

    asked by Anonymous
  84. English 11

    Is the following an example of metaphorical language? if marriage equality is a civil right, then denying it on the basis of (innately felt) sexual orientation is, like discrimination on the basis of skin color, simple bigotry.

    asked by Elaina
  85. Chemistry

    Why do you spot multiple times? Select one or more correct answers. A. To fill the capillary almost instantly by capillary action. B. So the developing chamber solvent does not evaporate. C. The higher compound concentration facilitates visualization. D.

    asked by JEN
  86. English 11

    when discussing the organization of an article what are somethings you can say to explain that it flowed together nicely?

    asked by Elaina
  87. Child Development

    According to contempory theorists an understanding of the effects of ones behaviors on others develops as a childs

    asked by Sandra
  88. math

    if joise drives 55 miles per hour how many hours will it take her to travel 350 miles

    asked by jada
  89. English III proofread and tips

    Hi its me again! Is it ok to ask for ya'll to proofread these summaries I'm submitting? If not, I'll stop but here's another one I've finished. New York Times Putting Our Brains on Hold August 6, 2010 By: Bob Herbert In his essay, Putting Our Brains on

    asked by Claire
  90. Spanish writing

    Spanish writing - SraJMcGin, Saturday, August 18, 2012 at 8:49pm Just because the directions say to use the Subjunctive, it does NOT mean to use it everywhere! Your first statement is FACT and therefor there is no Subjunctive! hay muchas, etc. The 2nd

    asked by raj
  91. math

    ABC is a isosceles triangle. Line B extended to D. Prove that

    asked by soumi
  92. English

    My teacher says to discuss the style of an article we've chosen by noticing diction, tone, metaphorical language, organization, us of anecdote. Could someone give me an example of those 5 things? I'm a bit confused.

    asked by Anon
  93. chemistry

    In TLC, why do you spot multiple times? Select one or more correct answers. A. To fill the capillary almost instantly by capillary action. B. So the developing chamber solvent does not evaporate. C. The higher compound concentration facilitates

    asked by Hannah
  94. calculus

    find the definite integral that is equivalent to lim n->infinity of sum over i=(1,n) n/(n^2+i^2) since definite integral of f(x) dx over (a,b) = lim n->infinity sum over i=(1,n) f(a + (b-a)i/n) * (b-a)/n then: f(a + (b-a)i/n) * (b-a)/n = n/(n^2+i^2)

    asked by Parker
  95. math 213

    Does the diagram define a function from A to B? Why or why not? A B Al Mary Abe Hall Sue Bob Jesse hall Liz arrow from Al to Abe arrow from Mary to Jesse arrow from sue to jesse arrow bob to Abe arrow from Liz to Jesse

    asked by susan
  96. math

    a cube made up of some blocks and there are 12 cubes ,block a and b are removed from each other.how many blocks will remain in the 12 cubes altogether

    asked by don
  97. math

    out of 40 people,17 have brothers,22 have sisters and 9 have both.how many people have neither brothers nor sisters

    asked by don