Questions Asked on
April 1, 2010

  1. Math

    An airplane's velocity with respect to the air is 580 miles per hour, and it is heading N 60 degrees W. The wind, at the altitude of the plane, is from the southwest and has a velocity of 60 miles per hour. What is the true direction of the plane, and what

    asked by Hannah
  2. Chemistry

    It takes 254 kJ/mol to eject electrons from a certain metal surface. What is the longest wavelength of light (nm) that can be used to eject electrons from the surface of this metal via the photoelectric effect? I'd appreciate it if someone could explain

    asked by Anonymous
  3. Chemistry

    Chromium (II) nitrate forms a hydrate that is 40.50% water by mass. What is its chemical formula? I just need to figure out how to do it!

    asked by Lola
  4. Physics

    If the speed of sound in air is 340 m/s, what is approximately the length of a shortest air column closed at one end that will respond to a tuning fork of frequency 140 Hz? Answer in units of cm.

    asked by Aaron
  5. Physics

    If the speed of sound in air is 340 m/s, what is approximately the length of a shortest air column closed at one end that will respond to a tuning fork of frequency 140 Hz? Answer in units of cm.

    asked by Aaron
  6. Chemistry

    (1) Which of the following clusters of orbitals would form the shape trigonal bipyramidal and would also be possible within the valence shell of an atom? a.) one d orbital b.) five d orbitals c.) five sp^3 orbitals d.) five sp^3d orbitals e.) five sp^3d^2

    asked by Kirsten
  7. math

    According to the Journal of Irreproducible Results, any obtuse angle is a right angle! Here is their argument.

    asked by help
  8. math

    6. The squares of an infinite chessboard are numbered as follows: in the first row and first column we put 0, and then in every other square we put the smallest non-negative integer that does not appear anywhere below it in the same column or anywhere to

    asked by trying
  9. Chemistry

    If 50.0mL of 1.60M HCl was added to 50.0mL of 1.80M NaOH, calculate the molarity of the resulting NaCl solution. (Hint: resulting solution has a volume of 100 mL)

    asked by Jen
  10. chemistry

    how can you fill a flask with pure oxygen without mixing it with air

    asked by Maria
  11. Calculus - another question

    "Margaret has found that by a proper choice of gears she can steadily increase her speed on her bike. One day she sets out and, ten minutes later, she achieves her cruising speed of 30km/h by increasing her speed steadily. How far did she travel in that

    asked by Stuck
  12. Chemistry

    If 50.0mL of 1.60M HCl was added to 50.0mL of 1.80M NaOH, calculate the molarity of the resulting NaCl solution. (Hint: resulting solution has a volume of 100 mL)

    asked by Michelle
  13. math

    The tail of a giant kangaroo is attached by a giant rubber band to a stake in the ground. A flea is sitting on top of the stake eyeing the kangaroo (hungrily). The kangaroo sees the flea leaps into the air and lands one mile from the stake (with its tail

    asked by tango
  14. physics(help me with the angle)

    In the 1968 Olympic Games, University of Oregon jumper !@#$%^& Fosbury introduced a new technique of high jumping called the "Fosbury flop." It contributed to raising the world record by about 30 cm and is presently used by nearly every world-class jumper.

    asked by phys
  15. physics

    A length of organ pipe is closed at one end. If the speed of sound is 344 m/s, what length of pipe is needed to obtain a fundamental frequency of 74 Hz? Answer in units of m.

    asked by Aaron
  16. chemistry

    The value of pKb for the base ethylamine (CH3CH2NH2) is 3.19 at 25°C, while the pKa for formic acid (HCO2H) is 3.74, also at 25°C. a) Calculate the value of the equilibrium constant Kc for the following aqueous equilibrium: HCO2– (aq) +

    asked by mandy
  17. math

    According to the Journal of Irreproducible Results, any obtuse angle is a right angle! Here is their argument. Given the obtuse angle x, we make a quadrilateral ABCD with  DAB = x, and  ABC = 90◦, andAD = BC. Say the perpendicular bisector toDC meets

    asked by help
  18. math

    Let’s agree to say that a positive integer is prime-like if it is not divisible by 2, 3, or 5. How many prime-like positive integers are there less than 100? less than 1000? A positive integer is very prime-like if it is not divisible by any prime less

    asked by chicken
  19. Chemistry

    Which of the following electron configurations represent an excited state? 1s22s22p1 1s22s22p63s2 1s1 1s22s12p63s1 1s12s22p63p3 1s22s22p23d1 1s22s22p64s1

    asked by Megan
  20. Chemistry

    Rolaids once ran a national advertising campaign in which it claimed that Rolaids consumes 47times its own weight of excess stomach acid. Can this be true. (Assume that stomach acid is .100M HCl and that its density is 1g/ml. I have no idea how to go about

    asked by Anonymous
  21. Algebra

    Complete the square for the binomial. Then factor the resulting perfect square trinomial. x^2 -2/11X

    asked by Anonymous
  22. math

    Show that there are no positive integers n for which n4 + 2n3 + 2n2 + 2n + 1 is a perfect square. Are there any positive integers n for which n4 +n3 +n2 +n+1 is a perfect square? If so, find all such n.

    asked by help
  23. History

    To what extent was the Progressive era (1870 - 1920) a unified movement of reform and change in American society? How efficiently did progressivism manifest itself in national politics on the federal level of government?

    asked by Anonymous
  24. STATS

    12- The number of cars sold annually by used car salespeople is normally distributed with a standard deviation of 19.22. A random sample of salespeople was taken and the number of cars each sold is listed her. 79 43 58 66 101 63 79 33 58 71 60 101 74 55 88

    asked by Judy and group
  25. science

    Five lines in the H atom spectrum have the following wavelengths in Ǻ: a). 1212.7, b). 4340.5, c). 4861.3 d). 6562.8 and e). 10938. Three lines result from transitions to the nf = 2. The other two result from transitions in different series, one with nf =

    asked by Samantha
  26. College Chemistry

    1) The concentration of the aluminum ion in a test solution is 0.10M. Using the Ksp for aluminum hydroxide (3. x 10^-34), calculate the concentration of hydroxide needed to precipitate aluminum hydroxide. From the concentration of the hydroxide, calculate

    asked by Zach
  27. math

    A weight attached to a spring is pulled down 4 inches below the equilibrium position. Assuming that the frequency of the system is 8/pi cycles per second, determine a trigonometric model that gives the position of the weight at time t seconds.

    asked by ame
  28. science

    Five lines in the H atom spectrum have the following wavelengths in Ǻ: a). 1212.7, b). 4340.5, c). 4861.3 d). 6562.8 and e). 10938. Three lines result from transitions to the nf = 2. The other two result from transitions in different series, one with nf =

    asked by Samantha
  29. Chemistry

    The temperature of 100.0 mL of water was raised from 26.7 degrees C to 62.3 degrees C. How much heat in calories was added to the water? (The specific heat of water is 1.000 cal/g degrees C and the density of water at 26.7 degrees C is 0.996626 g/mL)

    asked by Ally
  30. chemistry

    What volume of 0.210 ethanol solution contains .44 mol ethanol?

    asked by Anonymous
  31. Physical Chemistry

    The presence of a catalyst provides a reaction pathway in which the activation energy of a certain reaction is reduced from 192 kJ·mol-1 to 72 kJ·mol-1. (a) By what factor does the rate of the reaction increase at 281 K, all other factors being equal?

    asked by Mark
  32. Chemistry

    The hydrolysis of sucrose (C12H22O11) produces fructose and glucose (each C6H12O6). Two mechanisms are proposed: I) Step 1: C12H22O11 --> C6H12O6 + C6H10O5 (slow) Step 2: C6H10O5 + H2O--> C6H12O6 (fast) II) C12H22O11 + H2O--> C6H12O6 + C6H12O6 Would these

    asked by Val
  33. physics

    When I sing into a microphone, suppose I produce a sound intensity level (SIL) of 40 dB. If you can sing at 60 dB, what is the ratio of our produced sound intensities (yours divided by mine)?

    asked by naomi
  34. Math-157

    A class elects two officers, a president and a secretary/ treasurer, from its 12 members. How many different ways can these two offices be filled from the members of the class?

    asked by P-Dub
  35. math

    Find a positive integer m such that 1 2m is a perfect square and 1 3m is a perfect cube. Can you find a positive integer n for which 1 2n is a perfect square, 1 3n is a perfect cube and 1 5n is a perfect fifth power?

    asked by groove
  36. math

    phyllis has 5 1/2 pounds of candy to use to make goody bags for a birthday party. if she puts 1/4 of a pound of candy in each goody bag< how many goody bags can she make?

    asked by dominick
  37. CHEMISTRY

    HOW MANY GRAMS OF ICE AT -5.2 DEGREES CELSIUS CAN BE COMPLETELY CONVERTED TO LIQUID AT 6.4 CELSIUS DEGREES IF THE AVAILABLE HEAT FOR THE PROCESS IS 441800kj,FOR ICE SPECIFIC HEAT IS 2.01

    asked by LEBOHANG
  38. physics

    A uniform 2.00-m-long stick is raised at an angle of 30° to the horizontal above a sheet of ice. The bottom end of the stick rests on the ice. The stick is released from rest. The bottom end of the stick remains in contact with the ice at all times. How

    asked by Sandhya
  39. College accounting

    In order to provide snacks for guests on a 24-hour basis, Night sign a contact with Snack Attack. Snack Attack will install vending machines with food and drinks and pay a 10% commission on all sales.Estimated payments are made at the beginning of each

    asked by Armetrice
  40. Calc 2, Series/Sequences

    Explain clearly in detail the difference of the summation of n=1 to infinity of 1/n^2; and the integral of 1/x^2dx with the limit of 1 to infinity, as well. Part 2: Explain the natures of the two expressions and explain why the summation is greater than

    asked by Alex
  41. English lit

    Have writers block. Need help with Julia Alvarez poem!? I have to write a 1000 word analysis of the Julia Alvarez poem "Ironing Their Clothes". I need help with a thesis. I have no idea what to write about! 1 year ago Additional Details With a hot glide

    asked by Josh
  42. science

    When I sing into a microphone, suppose I produce a sound intensity level (SIL) of 40 dB. If you can sing at 60 dB, what is the ratio of our produced sound intensities (yours divided by mine)?

    asked by naomi
  43. STATS (PLEASE CHECK)

    16-To test the hypothesis H0 : ì = 100 against H1 : ì > 100, a statistics practioner randomly sampled T observations and found the mean x = 106 and the standard deviation sx = 35. The value of the test statistic is equal to (1) 1.1743 (2) −1.7143 (3)

    asked by Judy and group
  44. math

    I need help to get started with writing the equation for the following problem: It takes a freight train 2 hours longer to travel 300 miles than it takes an express train to travel 280 miles. The rate of the express train is 20 miles per hour greater than

    asked by fiona
  45. Math

    Find the value(s) of x, so that f’(x) = 0 for the function f(x) = 4x3 – 6x2 – 24x.

    asked by David
  46. economics

    This table shows the number of labor hours required to produce a digital camera and a bushel of wheat in China and South Korea. Digital Camera Wheat (bushels ) Quantity of Digital Camera Quantity of Wheat China 100 hours 5 hours 90 1800 South Korea 90

    asked by Merna
  47. HISTORY

    I am working on a paper for my college HIS class, I have found everything I need but am struggling finding information to answer one area..if someone could point me into the direction of some useful information, I would really appreciate it! : How was the

    asked by Amanda
  48. roman numerals

    1}The Romen numeral M represents: a.50 b.100 c.500 d.1000 2}The Roman numeral XLIX is written in Arabic numerals as: a.54 b.69 c.44 d.49

    asked by catherine
  49. medical

    for medical records how important should corrections be date and time stamped?

    asked by Chira
  50. STATS

    1-Suppose that the fuel comsumption of cars for the same model is normally distributed. A random sample of ten new cars of the same model are randomly selected and their fuel consumption (l/100 km) is determined by subjecting them to a road test of 500 km.

    asked by Judy and group
  51. MATH (CALCULUS) PLZ HELP

    A common problem encountered by the oil industry is to determine the most cost-effective route to connect various wells in an oil fertile area. The attached map is a copy of a section of a U.S. Geographical Survey contour map with a wetland area outlined.

    asked by piper
  52. Physics

    You observe an arti cial satellite orbiting the earth and estimate it is at an altitude h = [03] km above the earth's surface and has a mass m = 3500 kg. You wish to calculate when the satellite will be back in the same position. From the second law of

    asked by Adrianne
  53. Communication Arts/Language arts

    I stayed at home because I had an ear infection,and I got two assignments that I was confusedabout.It was Bug Graph #2, and#3.I think the directions tell me to connect the dots as I go, but it starts to look weird.It looks like there is a needle going

    asked by Bennett
  54. Chemistry

    Why is it important to use liquids with relatively lower boiling points when using the Dumas method?

    asked by Help
  55. MATH

    The number of accidents that occur at the intersection of Pine and Linden streets between 3 p.m. and 6 p.m. on Friday afternoons is 0, 1, 2, or 3, with probabilities of 0.84, 0.13, 0.02, and 0.01, respectively. Graph this probability distribution. What is

    asked by Tyga
  56. Algebra

    Give the vertex and axis of symmetry of the quadratic function. f(x) = x^2 - 2x - 8

    asked by Anonymous
  57. CALCULUS/DERIVATIVE

    C(X)= 2.7X +4.7 SQRT OF [400^2 + (780-X)^2]

    asked by MILEY
  58. Math(Please check)

    Find the cross product of the unit vectors. j X k My answer was -i. Am I correct?

    asked by Abbey
  59. Algebra

    Describe what the graph of interval[-4,10] looks like.

    asked by Michelle
  60. MATHS>>>PLEASE HELP

    find the maximum value of: 5+sinx-3cosx and state the value of x for which this maximum occurs

    asked by john peaterson
  61. algebra

    simplify ^-6 * ^2 ^ is sq root sign

    asked by teri
  62. calculus

    When air expands adiabatically (without gaining or losing heat), its pressure P and volume V are related by the equation PV^{1.4}=C where C is a constant. Suppose that at a certain instant the volume is 380 cubic centimeters and the pressure is 89 kPa and

    asked by ujkk
  63. stats

    8-A bakery stated that the average number of breads sold daily is 3000. An employee thinks that the actual value might differ from this and wants to test this statement. The correct hypotheses are: (1) H0 : ¦Ì = 3000 H1 : ¦Ì not= 3000 (2) H0 : ¦Ì >

    asked by Judy and group
  64. Chemistry

    Can you please someone check my answer for me? I don't know how to start thses answer. Chemistry is not my things. Please give me answers. :( a)Determine the number of grams in 0.750 moles of the compound Iron(II)phosphate: Fe3(PO4)2. answer: 129.68grams

    asked by Anonymous
  65. AED 204

    I am stuck on the final paper for this class. I am not really sure what is expected. The directions don't make sense to me. o Assume that the cultural make up of your classroom includes at least five different ethnic and religious groups. o Address how and

    asked by Tina
  66. calculus

    A) How do you prove that if 0(

    asked by Sarita
  67. MATH

    Five numbers are to be picked, without repetition, from 44 numbers to determine the winner of the Fortune Five game in the state lottery. If the order of the numbers is insignificant, how many different ways can a winning quintuple be selected? What is the

    asked by Moonpie_17
  68. Math 157

    A ship carries exactly 10 different signal flags. If each possible combination and ordering of 4 of these flags connotes a specific message, how many signals can be sent with these flags, taken 4 at a time?

    asked by Ty
  69. Burning Candle experiment

    What is the role of the wick in the candle? Is the role of the wick just to hold the flame of the candle? More information would be appreciated, thanks. Also, How does it help keep the candle lit? does it burn?

    asked by Sara
  70. science

    One reason carbon monoxide (CO) is toxic in that it bind to the blood protein hemoglobin more strongly than oxygen does. The hemoglobin – CO bond absorbs radiation of 1953 cm–1, which are in units of wavenumbers. Wavenumber is defined as the reciprocal

    asked by Johannie
  71. social studies

    can someone help me with a website to creat a timeline tracking the following major theme/paragism shifts in American history from World War I through the end of Worldx War II 1945

    asked by Dellaine
  72. STATISTICS

    A statistics practitioner formulated the following hypothesis: H0 : ¦Ì = 200 against H1 : ¦Ì < 200 and learned that x = 190 n = 9 and ¦Ò = 50. The p-value of the test is (1) 0.6 (2) 0.2743 (3) 0.7743 (4) −0.2743 (5) Cannot be found with information

    asked by Yumna
  73. Help me think of ideas for my essay?

    My thesis statement for my synthesis essay to connect The Grapes of Wrath, The Great Gatsby and The Death of a Salesman is "It is impossible to maintain honor and also achieve success." Could anybody give me any ideas for my 3 body paragraphs I'm having

    asked by Emily
  74. math

    The triangular numbers are the numbers 1, 3, 6, 10, 15, . . .; the square numbers are the numbers 1, 4, 9, 16, 25, . . . The pentagonal numbers 1, 5, 12, 22, 35, . . .. The geometrical language is justified by the following diagrams: a. What are the first

    asked by jeep
  75. Calculus

    "Find the antiderivative of f(x)= (2x)/((x^2)+1)." I understood how to do it with just a number as the numerator, but I can't figure it out with x in the numerator..

    asked by Stuck
  76. Health

    Dr. Bob is preparing to operate on Sally for an immediately life-treatening condition. just before the begins the operation, he discovers that she is 17 years old. Her parents, with whom Dr. Bob has never discussed the operation, are in the waiting room of

    asked by Daliz
  77. Chemistry

    If you have the q cal of a reaction, then obviously you can convert to q chem by negating your q cal. But what if you need to get to q rxn (q of the reaction)? Also, my textbook is claiming that the q rxn = -(q sol + q cal). How does that figure into this?

    asked by Fred
  78. CALC (TANGENT LINE)

    1-show that 1-x/2 is the tangent line approximation to 1/ sqrt of 1+x near x=0 2-what is the local linearization of e^x^2 near x=1 3-find the tnagent line approximation of 1/x near x=1

    asked by MILEY
  79. physics

    A baseball is thrown at 88 mi/h and with a spin rate of 1500 rev/min. If the distance between the pitcher’s point of release and the catcher’s glove is about 61 feet, estimate how many revolutions the ball makes between release and catch. Neglect any

    asked by Sandhya
  80. Science

    Using a " Cause and effect map" illlustrate a rapid and slow change caused by molten rock and it's effect on Earth's surface and write a detailed description how molten rock found below the Earth's crust can cause change to Earth's surface and it's

    asked by Uzair Amin
  81. science

    The question was if John is smaller than Jason and then pushes Jason to the ground, then who is exerting a force?.

    asked by sam
  82. MATH 157

    On a TV game show, the contestant is asked to select a door and then is rewarded with the prize behind the door selected. If the doors can be selected with equal probability, what is the expected value of the selection if the three doors have behind them a

    asked by Tyga
  83. MATH157

    How many batting lineups of the nine players can be made for a baseball team if the catcher bats first, the shortstop second, and the pitcher last?

    asked by Tyga
  84. math

    4. For the curve with y = -2x3 + x - 6, find: (b.) the gradient at the point (-1, -5) (c.) the equation of the tangent line at the point (-1, -5).

    asked by David
  85. Accounting

    I am so confused on how to answer this question given from my instructor. I see many websites that pertain to present value. Is there an explanation somewhere on the internet that would help explain? I googled the question and found"Net present value -

    asked by Highly confused
  86. Web application development JSP

    Below is the following jsp code for a homework assignment im working on. Im allow four input text fields in which a customer can enter the amount of each fruit they want to buy, a submit button, and a reset button. After a customer placed an order, a page

    asked by Clac7724
  87. geography

    I am doing project about Japan.On the section of Government/history-I have to find and write about taxes I searched but did not find anything talk about taxes .Can you help me please? thank you

    asked by marie
  88. Math-Geometry

    The volume of a right circular cone is 150 pie cubic centimetrs. Find its altitude in centimeters if the radius of the base is 5cm.

    asked by Sam
  89. MATH/DERIVATVE

    C(X)= 2.7X +4.7 SQRT OF [400^2 + (780-X)^2]

    asked by MILEY
  90. Precalculus(URGENT)

    solve the problem 2xcubed-17xsquared+31x+20 given that 5 is a zero of f(x)= 2xcubed-17xsquared+31x+20 you can use lobng division or synthetic division

    asked by Arielt -Help now fast due tommorow
  91. help plz

    2}select the best definition for the word senile. a.pre-eminent b.priority c.old age d.clear

    asked by catherine
  92. medical

    when the computer service bureau destroys or erases records, should the erasure be verified by the bureau to the physician?

    asked by Lois
  93. math

    Two boys divide a profit of $36 in the ratio of 5:3. How much does each boy get?

    asked by Nicki
  94. medical

    should individuals and organizations with access to the databases be identified to the patient?

    asked by Lois
  95. health

    Does the AMA ethics opinion mention encryption as a technique for security?

    asked by Daliz
  96. Biology

    4. Does the following set of coordinations make a horizontal, vertical, or diagonal line when connected with a straight line? (4, 5) (2, 5) 5. Positive slope indicates a _____ process. a. steady b. gaining c. losing d. slow A? 6. The m in the equation y=

    asked by mysterychicken
  97. medical

    in regard to electronic medical records (EMRs), what is the policy for disclosing authorized data requested by third parties?

    asked by Daliz
  98. subcategory

    Which of the items below is NOT a subcategory of change effected through similitude? a.emotional b.degeneration c.operational d.symbolic

    asked by catherine
  99. Health

    Paula Patient doesn't want her violent boyfriend to know she's getting an aboution, so she asks Dr. bob to send all communications to her to a post office box and to phone her only at work. What should Dr. Bob do, and what is the legal basis for your

    asked by Daliz
  100. Biology

    What is the habitat and # of living species of: 1.single celled protozoa 2.joint legged arthopods 3.back bone chordates

    asked by Jillian
  101. Medical/law

    Paula Patient's attorney asks Dr. Bob for medical records about Paula's car accident and promises to provide a written authorization from Paula later. Dr. Bob gives the attorney Paula's entire file, including her records about treatment for HIV. Did Dr.

    asked by Lois
  102. science

    i need a good website about the civilian prehospital experience

    asked by jerson
  103. Law and Medecine

    what is contrast contributory negligence and comparative negligence? and what is the diference between them?

    asked by Chira
  104. Law and Medicine

    If HIPAA rules are stricter than state law, which standard should you follow and why? What if the state law was stricter?

    asked by Chira
  105. Law

    What is the subject matter jurisdiction of federal courts?

    asked by Lois
  106. chemistry

    I have a molar mass for a condensed vapor: 95.935 g/mol. What are a few of the potential identities of the unknown liquid from which the condensed vapor came from?

    asked by Hannah
  107. Medical

    At what point during the course of treatment of a new patient should notice of use and disclosure of health information, required under HIPAA, be given and why?

    asked by Daliz
  108. Chemistry

    X(g) + 2 Y(g) + 2 Z(g) -->3 M(g) + 2 N(g) I've already found the orders for the following to be: X is 2nd, Y is 1st, Z is 0 and overall of course is 3. But I am confused about the below question. I initially guess that No it doens't occur in one step..but

    asked by Val
  109. business

    Which financial ratios would you consider most useful? Would these ratios be different than the ones you would consider useful as an investor? Why or why not?

    asked by samuel
  110. Math

    Find the length of v. Inital point of v = (1,-3,4) Terminal point of v = (1,2,-2) Please help. I am not sure how to start! Thank you.

    asked by Abbey
  111. senile

    the process by which senile now is used for the negative aepects of old age is called: a}functional change b}degeneration c}specialization d}abstraction

    asked by catherine
  112. HSM 270

    I really need someone to explain this question to me please! Brainstorm ideas for alternative funding for the program you selected from Appendix B. Search the Internet or contact local human services organizations for ideas on obtaining nontraditional

    asked by So confused
  113. 3rd grade

    one dividend in my fact family is 18 one of my divisors is twice one of myquotients what three numbers are in my fact family

    asked by melissa
  114. social studies

    what is the time period for kush,hebrews and egyptian

    asked by kayla
  115. social studies

    where were kush,hebrews and egyptian located

    asked by kayla
  116. algebra

    how do you find an area for a pentagonal prism

    asked by person
  117. Accounting

    I was just wondering if I was doing this right. In my accounting class we are studying furture value. I was wondering if I was doing this one right... if I was to figure out $5000 that was compounded quartery at 6% for five years, how much would that be. I

    asked by Susie
  118. Math(Urgent Please help)

    Find the area of the parallelogram that has the vectors as adjacent sides. u = i + 2j + 2k V = i + k I know that the magnitude of the cross product results on the area. After I do the cross product then what to I do?

    asked by Abbey
  119. English vocabulary

    what is dissimilation ?

    asked by catherine
  120. Chemistry

    Why is it important to use liquids with relatively lower boiling points when using the Dumas method?

    asked by Jen
  121. Math(Please help)

    Find the length of v. Inital point of v = (1,-3,4) Terminal point of v = (1,2,-2) Please help. I am not sure how to start! Thank you.

    asked by Abbey
  122. algebra

    6 over x to the 10th times x to the 17th over 51

    asked by bob
  123. algebra

    6 over x to the 10th times x to the 17th over 15

    asked by bob
  124. chem

    is HC2H3O2 a strong or weak acid

    asked by Stephany
  125. chemistry(check my answer)

    A. lower than the freezing point of the solvent alone because higher temperature is required to accelerate solvent molecular motion enough to overcome obstructon by solute particles.. B. higher than the freezing point of the solvent alone because higher

    asked by phys
  126. Chem

    What is the PH of 0.0100M H2SO4?

    asked by CC
  127. Math

    Find the length of v. Inital point of v = (1,-3,4) Terminal point of v = (1,2,-2) Please help. I am not sure how to start! Thank you.

    asked by Abbey
  128. English

    Let's say 7:15, in front of the theater. (What is the use of 'Let's say'? Can we say 'Let us say' instead ? When do we use 'Let's say'?))

    asked by rfvv
  129. Literacy

    How teacher help students remember information.

    asked by Anonymous
  130. stats

    if we reject the null hypothesis, we conclude that:

    asked by Anonymous
  131. chemistry

    How many millimoles of H+ are present in 1.00 L of 1.24 M CF3CO2H solution?

    asked by andy
  132. algebra 2

    are these answers right? 1. ã-121 = iã11 2. -2ã-144 = 2iã144 = 2i*12=24i 3. ã-75 = i=ã75 = iã5sq*3 = 5iã3 4. 5ãã-27 = 5iã27 = 5iã3sq*3 = 15iã3 what about 5. ã-6 * ã2 = ??

    asked by teri
  133. bobpursley

    like what are the steps to getting into a hospital is what prehospital means

    asked by jerson
  134. marketing

    Select at minimum 3 major types of tests (examples include cognitive abilities, motor and physical abilities, personality & interests, and achievement tests, work sampling, etc) and discuss the legal and ethical implications you see with each test. What

    asked by Tammi Seibert
  135. science

    why are the hydrogen atoms in a water molecule are attracted to Cl− ions in sodium chloride (NaCl)?

    asked by libby
  136. math

    I've to solve 3x^2 + 6x +3 =0 by factoring. Thus, after solving I got the answer as 3(x + 1)^2. Please correct me if I'm wrong.

    asked by bindiya farswani
  137. Algebra 2

    Can someone help me with this?? Simplify... ã-45 x ã-20 = is it?? ã-45*-20 ã-900 3ã-30

    asked by dan
  138. MATH

    Sam bought 1 of 250 tickets selling for $2 in a game with a grand prize of $400. Was $2 a fair price to pay for a ticket to play this game?

    asked by P-Dub
  139. Math 157

    The game of dots is played by rolling a fair die and receiving $1 for each dot showing on the top face of the die. What cost should be set for each roll if the game is to be considered a fair game?

    asked by Moonpie_17
  140. Algebra 2

    Thanks Reiny How ado I simplify? (3iã5)^

    asked by dan
  141. MATH-157

    In each case, determine whether the situation calls for a discrete or continuous random variable and explain your answer. a. The description of the number of children in a family selected at random from families in Ft. Wayne, Indiana b. The net worth of an

    asked by Tyga
  142. Math

    The mean systolic blood pressure of adult males is normally distributed with a mean of 138 (millimeters of mercury) and a standard deviation of 9.7. What percent of adult males have blood pressure between 161.28 and 164.9?

    asked by P-Dub
  143. MATH

    Battery Power Problem. A certain type of thermal battery for an airplane navigation device backup power has a mean life of 300 hours with a standard deviation of 15 hours. What proportion of these batteries can be expected to have lives of 322 hours or

    asked by Ty
  144. biology

    how do some cells become brain cells and others become skin cells when the DNA in all of the cells is exactly the same

    asked by m
  145. Math

    fill in the missing digits in as many ways as possible so the number will be divisible by 6. 3_2_

    asked by Lisa
  146. statistics

    Find the critical value zc necessary to form a confidence interval at the given level of confidence. a. 90% = 1.645 b. 85% = 1.8025

    asked by looking for someone to varify my work please
  147. math

    how many bases are in a sphere?

    asked by Jared
  148. MATH157

    How many 4-digit license plates can be made by using the digits 0, 2, 4, 6, and 8 if repetitions are allowed? if repetitions are not allowed?

    asked by Tyga
  149. science

    One reason carbon monoxide (CO) is toxic in that it bind to the blood protein hemoglobin more strongly than oxygen does. The hemoglobin – CO bond absorbs radiation of 1953 cm–1, which are in units of wavenumbers. Wavenumber is defined as the reciprocal

    asked by Johannie
  150. Burning Candle experiment

    what is the shape of the candle flame? To me it looks kind of like a leaf--more like a teardrop. Am I correct? where does the wax from the candle go? Does it just burn in the flame?

    asked by Sara
  151. english

    i need a composition on why should boys hav all the fun!!!500 words

    asked by sadia
  152. business law

    Lucy, who owns a saloon, entered into a contract with Beauty Sdn Bhd, a manufacturer of shampoo, for the purchase of 300 boxes of 'high quality, super shining shampoo'. When the product was delivered, Lucy found the shampoo to be very poor quality and

    asked by Erikson
  153. business

    What are identifing fallacies

    asked by com 205
  154. Economic

    What happens As the price of a resource decreases?

    asked by Jeniffer
  155. math

    Let U = {xƒ}x is an American}, C = {x/x is a smoker}, D = {xƒ}x has a health problem}, E = {xƒ}x is a male} Describe a person who is an element of each of the following sets. Describe a person who is an element of each of the following sets:i) C (ii)

    asked by Jamie
  156. Precalculus(URGENT)

    determoine whether the equation defines y as a function of x y= the square root of(-3x-6) please please show work

    asked by Arielt -Help now fast due tommorow
  157. math

    Consider a rectangular array of dots with an even number of rows and an even number of columns. Color the dots, each one red or blue, in such a way so that in each row half the dots are red and half are blue, and also in each column half are red and half

    asked by new
  158. geometry

    The Perimeter of a rectangle is 600. The length of the rectangle is 2 more than 3 times the width. How do i turn this into an equation without solving it?? Please and thank you!!

    asked by Miss J.
  159. 9th grade

    solve for x: z+xyz=w

    asked by michael
  160. Math

    Line m is perpendicular to plane A. how many planes can contain line m and alo be perpendicular to plane A? I think it my be infinite?

    asked by Becky
  161. Precalculus(URGENT)

    solve and graph the inequality using interval notation (x-4)/(x+8)

    asked by Arielt -Help now fast due tommorow
  162. Precalculus(URGENT)

    compute the discriminant of the equation.What does the discriminant indicate about the kinds of solution? 7xsquared=2x-5

    asked by Arielt -Help now fast due tommorow
  163. medical confidentiality

    when should the patient be advised of the existence of computerized databases containing medical information about the patient?

    asked by chira
  164. confidentiality

    when should the patient be notified of purging of archaic or inaccurate information?

    asked by Daliz
  165. HSM/210

    A SOCIAL POLICY THAT MAY AFFECT YOUR FUTURE POSITION AS A HUMAN SERVICE WORKER

    asked by SUZIE
  166. medical

    when should the computerized medical database be online to the computer terminal?

    asked by Lois
  167. help plz

    1}select the correct division of the word quadrliateral into its preefix,base,and suffix. a.qua-dri-lat-eral b.quad-ri-lateral c.quad-ri-lat-eral d.quadr-i-later-al

    asked by catherine