Questions Asked on
April 21, 2013

  1. Statistics

    The amount of rainfall in January in a certain city is normally distributed with a mean of 4.2 inches and a standard deviation of 0.5 inches. Find the value of the quartile Q1

    asked by Sennie
  2. Math

    Kevin has 18 unit cubes. How many different rectangular prisms can be built using all the cubes

    asked by Rebecca
  3. Chemistry

    A solution contains 0.022 M Ag and 0.033 M Pb2 . If you add Cl–, AgCl and PbCl2 will begin to precipitate. What is the concentration of Cl– required, in molarity, when A. AgCl precipitation begins? B. AgCl precipitation is 99.99% complete? C. PbCl2

    asked by Sally
  4. physics 70

    A .275 kg. object is swung in a vertical circular path on a string .850 m. long. A) What are the forces acting on the ball at any point along this path? B) Draw free-body diagrams for the ball when it is at the bottom of the circle and when it is at the

    asked by Annette
  5. algebra 2

    During the first part of a trip a canoeist travels 26 miles at a certain speed. The canoeist travels 8 miles on the second part of the trip at a speed 5 mph slower. Total time is 3 hours. What was the seed on each part of the trip

    asked by bob
  6. physics

    Sophia exerts a steady 40-N horizontal force on a 8-kg box resting on a lab bench. The box slides against a horizontal friction force of 24 N. Show that the box accelerates at 2 m/s2.

    asked by Cassie
  7. algebra 2

    what is the value of the rational expression below when x is equal to three? 17+x/x+2

    asked by asia
  8. physics

    A different scaffold that weighs 400 N supports two painters, one 500 N and the other 400 N. The reading in the left scale is 800 N. What is the reading in the righth and scale?

    asked by Cassie
  9. Geometery

    Composite figure finding area. Is this right my answer I came out with is 323.5 cm? Rectangle: A=22cm x 17cm = 374 (Long side is 22cm, Width is 17cm.) Triangle: A = 1/2 x b x h A = 1/2 x 19cm ( no height given) So then, I added the rectangle and trinagle

    asked by Cole
  10. Chemistry

    What [PB2+] should be maintained in Pb(NO3) to produce solubility of 1.0*10^-4 mol PbI2/L when PbI2 (s) is added? Ksp for PbI2 is 7.1*10^-9 I can't figure it out...

    asked by Joe
  11. Chemistry

    A concentration cell consists of the same re- dox couples at the anode and the cathode, with different concentrations of the ions in the respective compartments. Find the un- known concentration for the following cell. Pb(s) | Pb2+(aq, ?) || Pb2+(aq, 0.1

    asked by Steven Gomez
  12. Physics

    A pot of water is boiling under one atmosphere of pressure. Assume that heat enters the pot only through its bottom, which is copper and rests on a heating element. In two minutes, the mass of water boiled away is m = 2.5 kg. The radius of the pot bottom

    asked by <3
  13. physics

    Two speakers are wired to emit identical sounds in unison. The wavelength in air of the sounds is 6 m. Do the sounds interfere constructively or destructively at a point 10 m from both speakers? 1. Destructively 2. Neither 3. Constructively

    asked by Emily
  14. geometry

    AB has a length of 5 cm the line segment is dilated to produce A'B' which has a length of 2 cm what is the scale factor of the dilation

    asked by Dannelle
  15. Chemistry

    Write an equation that represents how dihydrogen phosphate ion (H2PO4-) behaves as an Arrhenius acid. ( Be sure to include the correct charges for ions.)

    asked by Michelle
  16. Calculus

    A University of Rochester student decided to depart from Earth after his graduation to find work on Mars. Before building a shuttle, he conducted careful calculations. A model for the velocity of the shuttle, from liftoff at t = 0 s until the solid rocket

    asked by Emily
  17. Chemistry

    Write an equation showing that calcium hydroxide acts as an Arrhenius base in water. **(I'm not sure where to start or how to go about this question)

    asked by Michelle
  18. Math

    Sarah was cutting fabric for a quilt. She cut a strip of fabric that was 19 1/8 inches long into 5 equal pieces. When she was finished cutting Sarah had a piece that was 2 1/4 inches long. How long was each piece that she cut for the quilt?

    asked by aly
  19. AP tatistics

    A horticulturist wishes to estimate the mean growth of seedlings in a large timber plot last year. A random sample of n = 100 seedlings is selected and the one-year growth for each is measured. The sample yields = 5.62 cm. The known standard deviation for

    asked by Ann
  20. Financial Accounting

    Wings Inc., a software development firm, has stock outstanding as follows: 25,000 shares of cumulative 1%, preferred stock of $40 par, and 50,000 shares of $120 par common. During its first four years of operations, the following amounts were distributed

    asked by Stacey
  21. Math

    Heather deposits $3000 into an account that pays simple interest at a rate of 2% per year. How much interest will she be paid in the first 3 years?

    asked by Tiera
  22. Chemistry

    A concentration cell consists of the same re- dox couples at the anode and the cathode, with different concentrations of the ions in the respective compartments. Find the un- known concentration for the following cell. Pb(s) | Pb2+(aq, ?) || Pb2+(aq, 0.1

    asked by David
  23. Calculus

    Find the exact area below the curve y=x^3(4-x)and above the x-axis

    asked by Mike
  24. Math

    The elevation of the surface of the Dead Sea is -424.3 meters. In 2005, the height of Mt. Everest was 8,844.33 meters. How much highernwas the summit of Mt. Everest?

    asked by aly
  25. Algebra 2 ..

    Simplify. 1. (1/log base 3 of 60)+ (1/log base 4 of 60)+ (1/log base 5 of 60) 2. (log base 16 of x)+ ( log base 4 of x) + (log base 2 of x)=7

    asked by Anonymous
  26. chemestry

    Given the equation C2H4(g)+3O2(g)>2CO2(g)+2H2O(l)+1411kJ, how much heat is released when 8.00g of O2 react?

    asked by Haily
  27. physics

    A 85 kg pole-vaulter falls from rest from a height of 6.4 m onto a foam-rubber pad. The pole-vaulter comes to rest 0.48 s after landing on the pad. (a) Calculate the athlete's velocity just before reaching the pad. m/s downward (b) Calculate the constant

    asked by Kat
  28. HARD CHEM QUESTION

    A chemical system within a sealed 1 L reaction vessel is described by the following reversible reaction equation: 2H2S(g) 2H2(g) + S2(g) If the equilibrium constant is 0.000 004 200 at 1103 K find: the reaction quotient initially.

    asked by scilover
  29. Math

    A cell phone company offers two different plans. Plan A: Monthly fee of $28 30 free minutes $0.45 per additional minute   Plan B: Monthly fee of $40 No free mins $0.25 per additional minute Determine the time in the mins that results in the same monthly

    asked by Simitha
  30. Chemistry

    Assume you dissolve 0.235 g of the weak acid benzoic acid, C6H5CO2H, in enough water to make 4.00*10^2 mL of solution and then titrate the solution with 0.138 M NaOH. C6H5CO2H(aq) + OH-(aq) C6H5CO2-(aq) + H2O(l) Find concentration of Na+ at equivalence

    asked by john
  31. AP chemistry

    A concentration cell consists of the same re- dox couples at the anode and the cathode, with different concentrations of the ions in the respective compartments. Find the un- known concentration for the following cell. Pb(s) | Pb2+(aq, ?) || Pb2+(aq, 0.1

    asked by David
  32. Physics (G and g)

    Please, I need help with this problem. I would really appreciate it. The top of Mt. Everest is 8850 m above sea level. Assume that sea level is at the average Earth radius of 6.38×106 m. What is the magnitude of the gravitational acceleration at the top

    asked by Kathy
  33. American History

    Which of the the following was true about the African Americans who moved to California during the mid-1800s? A) They were allowed to testify in court until 1870. B) They were very successful. They mined, established businesses and built schools. C) They

    asked by bubbie
  34. Chemistry

    Please help!:( What mass of copper would be produced by the reduction of copper(II) ions during pas- sage of 1 ampere of current through a solution of copper(II) sulfate for 89 minutes?

    asked by Steven Gomez
  35. General Chemistry

    "How would you prepare 150. mL of 0.1M sodium hydroxide given a stock solution of 3.0M NaOH?" I made calculations and figured the process would be to dilute 5 mL of the 3.0M NaOH to 150. mL. Is this correct? For the ideal 150. mL of 0.1M NaOH, I calculated

    asked by Emily
  36. physics

    Show that the acceleration of a hamster is 5 m/s2 when it increases its velocity from rest to 10 m/s in 2 s.

    asked by Cassie
  37. Physics

    What is the momentum of a wavelength= 0.015nm X-ray photon? p= in kg*m/s Please help I am confused. Thank you.

    asked by Laila
  38. trig

    Two tracking stations are on the equator 135 miles apart. A weather balloon is located on a bearing of N 37 degrees E from the weastern station and on a bearing of N 19 degrees E from the eastern station. How far is the balloon from the weastern station?

    asked by Taylor
  39. physics

    A canoe of mass 38 kg lies at rest in still water. A man and a woman are at opposite ends of the canoe 4.0 m apart and symmetrically located with respect to the canoe’s centre (which is also its centre of mass). The mass of the man is 65 kg and the

    asked by Anonymous
  40. Chem

    Citric acid (H3C6H5O7) is triprotic acid which reacts with NaOH according to the balanced chemical equation shown below what volume of 0.200m Naoh is required to titrate 7.50ml of lemon juice which is 0.245 m in citric acid? H3C6H5O7+3NaOH->Na3C6H5aO7+

    asked by Ray
  41. Trig

    A plane has a speed of 250mph and flies with a bearing of N35degE. The wind is blowing from the west at 25 mph with a heading of due east. What is the actual speed and heading of the plane? Round to one decimal place.

    asked by Nancy
  42. college

    a guy wire 27 feet long runs from the top of the pole to a spot on the ground. I f the height of the pole is 6 feet longer than the from the base of the pole to the spot where the guy wire is anchored, how tall is the pole?

    asked by Anonymous
  43. 5th grade math (word problems)

    Mrs. Jones bakes pies. She always cuts each pie into 8 slices. Ther are 13 slices left on the counter. How many pies are on the counter? (write as mixed number). work: 13/8 = 1 5/8 pies. Is this correct?

    asked by Alex
  44. trig

    A kite is in the shape of a quadrilateral with two pair of congruent adjacent sides. The lengths of two sides are 20.0 inches and the lengths of the other two sides are 35.0 inches. The two shorter sides meet at an angke of 115 degrees. A. Find the length

    asked by Anonymous
  45. Chemistry

    Find the entropy change of the universe when 2 mol of water freezes at -10 degrees celsius.

    asked by Linda
  46. Physics

    A closed box is filled with dry ice at a temperature of -81.5 C, while the outside temperature is 27.4 C. The box is cubical, measuring 0.307 m on a side, and the thickness of the walls is 4.47 × 10-2 m. In one day, 3.37 × 106 J of heat is conducted

    asked by <3
  47. physics

    A 5.00-meter steel beam of uniform cross section and composition weighs 100 N. What is the minimum force required to lift one end of the beam?

    asked by Anonymous
  48. physics

    Show that the average speed of a rabbit that runs a distance of 30 m in a time of 2 s is 15 m/s.

    asked by Cassie
  49. Data Mangement- Math

    Paula moves to an area with a different telephone exchange. Telephone numbers in the new exchange start with 753, and all combinations of the four remaining digits are equally likely. a) Calculate the probability that the last four digits in Paula’s new

    asked by Maame
  50. physics

    A foam plastic ( sg = 0.58 ) is to be used as a life preserver. What volume of plastic must be used if it is to keep 20 % (by volume) of a 75 kg man above water in a lake? Average density of a man is equal to 1.04 g/cc. Assume the foam plastic’s top

    asked by ynna
  51. Life orientation

    Name two community organizations that are involved in supporting or giving redress to these factors.explain how these community organizations are involved in redressing these issues.

    asked by Mthokozisi
  52. chemistry

    A 2.5 g sample of NaOH (Mw = 40.00) was dissolved in water to give a solution of final volume 250 cm3. (i) With reasons, state whether NaOH is a strong or a weak base. Give the conjugate acid of NaOH and decide whether this conjugate acid is acid, alkaline

    asked by LUx
  53. Statistics

    A production process produces an item. In a recent study, the company found that 20% of all items produced were defective. Each item is inspected before being shipped. 10% of the items were misclassified( labeled as defective when they were good or labeled

    asked by Richard
  54. physics 52

    A car rounds a banked curve where the radius of curvature of the road is R=100m., the banking angle 10 degrees and the coefficient of static friction is .10 (slippery conditions). A) Determine the range of speeds the car can gave without slipping up or

    asked by Annette
  55. Chemistry

    Write the product for the reaction when dichlorine oxide (Cl_2O) reacts with water (the product will have only one equivalent of chlorine in it).

    asked by Michelle
  56. CHEMISRTY

    Calculate the energy required to raise the temperature of 160.0 g Ag from 273 K to 295 K.

    asked by Tonya
  57. physics

    A canoe of mass 38 kg lies at rest in still water. A man and a woman are at opposite ends of the canoe 4.0 m apart and symmetrically located with respect to the canoe’s centre (which is also its centre of mass). The mass of the man is 65 kg and the

    asked by Anonymous
  58. Chemistry

    Find the entropy change of the universe when 2 moles of water freezes at -10 degrees celsius. The delta G for the freezing of water at -10 degrees celsius is -210 J/mol and the heat of fusion of ice at this temperature is 5610 J/mol.

    asked by Linda
  59. Life orientation

    in 10-15 lines critically discuss 5 ways in which teenage pregnancy problem imparts on the community. provide relevant source to support your claims

    asked by Busi
  60. math

    a football team gained 12 yards on one play, lost 40 yards on another and gained 34 yards on the last play of the first half. they had already gained 345 yards during the half. what was the total yardage gain for the first half?

    asked by amanda
  61. Chem

    Solubility of Silver(I) Carbonate is 3.2x10^-2 g/100mL What is the Ksp? I'm getting 2.19x10^-12 But it's not in the answer sheet

    asked by Viv
  62. Physics

    Sophia exerts a steady 40-N horizontal force on a 8-kg box resting on a lab bench. The box slides against a horizontal friction force of 24 N. Show that the box accelerates at 2 m/s2.

    asked by Cassie
  63. Physics

    A convex lens of focal length 2.5 cm is placed 4 cm from a small object of height 4 cm. Use a ruler and construct the image. Is the image real or virtual, upright or inverted? What is the image distance? What is the height of the image? What is the

    asked by Emily
  64. AP World History

    I have to analyze how sub-Saharan Africa & south & south-east Asia's relationship to global trade patterns changed from 1850 to present. please help !

    asked by Kaitlyn
  65. calculus

    limx→4 4x^2−15x−4/x−4.

    asked by lisa
  66. trig

    A pole is braced by two wires that extended from the top of the pole to the ground. The lengths of the wires are 16 feet and 18 feet and the measure of the angle between the wires is 110 degrees. Find, to the nearest foot, the distance between the points

    asked by Anonymous
  67. Biology

    When making comparison of sequences where some are whole genome sequences while others are partial genome sequences, or a specific glycoprotein sequence, How is it that we are able to make comparisons from these sequences if they all have different

    asked by Cristian
  68. physics (Newton"s law of gravitation)

    Could anyone please help me with this problem? I would really appreciate it. The top of Mt. Everest is 8850 m above sea level. Assume that sea level is at the average Earth radius of 6.38×106 m. What is the magnitude of the gravitational acceleration at

    asked by Kathy
  69. Grammar (Ms. Sue)

    Some of the underlined pronouns in the following sentences are incorrect. On your paper, revise each sentence that contains an error. If the pronoun is used correctly, write "correct." 1). HORSE is a game that is often played by my friend and I (

    asked by Anonymous
  70. Physics

    The left end of a 1-kg, 1.0 m long uniform thin rod is attached to a pivot, about which it can rotate freely. A force F is applied at the right end of the rod at 30 degree angle to hold the rod stationary in a horizontal position. What is the magnitude of

    asked by gina
  71. math

    Bibi wants to send invitations to some of her friends to come to her birthday party. She has contact information for 37 friends stored on her phone, but she only wants to invite 21 of those people to her party. She tries to send out a message to the 21

    asked by hi
  72. Chemistry

    Assign oxidation states to all atoms in each of the following. explain the order in which you determine the oxidation states for each element if applicable. a)O2 b)HSO4- c)Na2HPO4 d)CrCl3

    asked by Juan
  73. Chemistry

    What is the solubility of Ca3(PO4)2 in 0.045 M of CaCl2

    asked by Roderick
  74. life orientation

    identify and describe 3 environmental health hazards that cause ill health,accidents,crises and disasters within South Africa and globally.

    asked by tshiamo
  75. pre calc

    Use the sum-to-product formula to simplify the expression: If sin 52 + sin 8 = sin A, 0

    asked by dylan
  76. life orientation

    5 ways in which the human or environmental problem impacts on the conmunity

    asked by siphe
  77. math

    x^2+16xy+y^2-8=0 Write the appropriate rotation formulas so that in a rotated system the equation has no x'y'-term

    asked by Fabiola
  78. Algebra

    As a promotion, a store draws the name of a customers each week. The prize is a coupon for the store. If winner is not present at drawing, he cannnot claim the prize and the amount of the coupon increases for the next weeks drawing. the function f(x)=

    asked by Dylan
  79. Physics

    Photons of energy 12eV are incident on a metal. It is found that current flows from the metal until a stopping potential of 8.0V is applied. If the wavelength of the incident photons is doubled, what is the maximum kinetic energy of the ejected electrons?

    asked by Laila
  80. Calculus

    Graph the parametric equations: x=cos(t) y=sin(t) z=cos(2t) How would I go about solving this problem? thanks!

    asked by Anonymous
  81. math

    Take an 17 by 11-inch piece of paper and cut out four equal squares from the corners. Fold up the sides to create an open box. Find the dimensions of the box that has maximum volume. (Enter your answers as a comma-separated list. Round your answer to three

    asked by emily
  82. Social Studies... :( help me

    Between 1800 to 1860, how long did the slaves work on the cotton field daily?

    asked by Omario
  83. PLEASE HELP CHEM!!

    5.6 x 10-6 mol of A and 5 x 10-5 mol of B are mixed in a 200 mL flask. The system is represented by the equation: 2A(G) + B(G) 3C(G) At equilibrium, there is 4.8 x 10-5 mol of B. Calculate the value of the equilibrium constant.

    asked by scilover
  84. math

    Evaluate the following with thought the use of a calculator: Sin70.sin25 + sin65.sin20 And please people explain how you arrived in your answer Lots of love, timmy

    asked by timithy
  85. Music

    How did music in the sixties represent/reflect the political and social climate? 3 ways.

    asked by Kristy
  86. Chemistry

    Calculate the H3O+ ion concentration and the pH at the equivalence point when 45.0 mL of 0.4000 M NH3 is mixed with 45.0 mL of 0.4000 M HCl. Ka=5.6x10-10

    asked by john
  87. Economics

    Which of these products or services is likely to have an inelastic supply in the short run? A. cargo ships B. haircuts C. newspapers D. staples

    asked by Tori Madison
  88. chemistry

    Identify the limiting reagent. 2.43g of magnesium is added to a solution containing 0.100 mol hydrochloric acid t ok produce hydrogen gas.

    asked by Amy
  89. english

    i have been asked to correct the sentence would you please assist : 1.when will you eat are you not hungry

    asked by R S Telagathoty
  90. chemistry

    A 32.0-g sample of water at 290. K is mixed with 51.0 g water at 310. K. Calculate the final temperature of the mixture assuming no heat loss to the surroundings.

    asked by David
  91. physics

    A solid disk of radius 6.50cm and mass 1.65kg , which is rolling at a speed of 2.60m/s , begins rolling without slipping up a 10.0 slope.How long will it take for the disk to come to a stop?

    asked by Lauren
  92. Chemistry

    4, Assign oxidation states for the two elements in the compound OF2. Explain the rules that you use. 5. For each of the following oxidation-reduction reactions of metals and nonmetals, identify the element that is oxidized and the element that is being

    asked by Juan
  93. chemistry

    What is the solubility of Ca3(PO4)2 in 0.06 M of K3PO4

    asked by Roderick
  94. Life Orientation

    Identify one environmental or human factor that causes ill health or accidents or disasters within your community or any other community within South Africa.

    asked by Lungelo
  95. Life orientantion

    Identify one environmental or human factor that causes ill health.

    asked by Mbally
  96. US History

    I Need Help to Start my Thematic Essay, Theme is change- Throughout united states history individuals other than presidents have played significant roles that led to changes in the nations economy, government, or society. I need help to restate this for my

    asked by Lupe
  97. grammar

    What part of speech is the word run in the following sentence? I have a run in my hose.

    asked by kara
  98. chemistry

    in relation to the pH of pure water at 25 degree Celsius where do the pH values of acid fall

    asked by Alex
  99. precalc please help me

    If cos^4 3 x - sin^4 3 x = cos (g(x)), then g(x) = ??. For part (b), use a^4-b^4=(a^2-b^2)(a^2+b^2)!

    asked by dylan
  100. Science

    Are the ions of a metal very different from the atoms of a metal?

    asked by M.
  101. english

    Book: Information you’ll need to cite a book Example- Powell, Kevin, ed. Step into a World: A Global Anthology of the New Black Literature. 2nd ed. New York: Wiley, 2000. 1. Author(s) or Editor(s)- last name, first name, middle is any, followed by a

    asked by jesse
  102. mathematics

    Find the smallest prime number N such that the following is true: The largest prime factor of N−1 is A; The largest prime factor of A−1 is B; The largest prime factor of B−1 is 7.

    asked by Sambaran G.
  103. math

    Three students, Chris, Vlad, and Steve, are registered for the same class and attend independently of each other. If Chris is in class 80% of the time, Vlad is in class 85% of the time, and Steve is in class 90% of the time, what is the probability that at

    asked by Lindsay
  104. Subject:life orientation

    What are the institutions/community organizations tha are involved in supporting or giving redress to these disasters of hiv and aids.explain how these organizations are ivnolved in providing a safe and healthy environment.

    asked by Anonymous
  105. rrational function

    find the vertical asympotate f(2x)/x^2-4

    asked by Anonymous
  106. Computer Programming

    I am trying to put the following in Python Code. I know how to do it mathematically, but code - not sure where to start. A state creates license plates that each contain two letters followed by three digits. The first letter must be a vowel ( A, E, I, O, U

    asked by Sheryl
  107. wesley

    there will be a coin toss to determine the winner of the $5 million prize. You are offered $100,000 for your ticket right now. What would you do?

    asked by m
  108. L.o

    Identify one environmental or human factor that causes ill health?

    asked by Vutivi
  109. Math

    What is the distance on the ground between 2 posts when the posts are attached to a platform that is 6 feet square and attached with 15 degree brackets? The posts are either 10 foot or 12 foot. Please answer for both.

    asked by Gina
  110. English

    What are the shifts in meaning of the word "Conquest"?

    asked by Thomas
  111. Life orientation

    Identify and describe 3 enviromental health hazards that cause ill health,crises and disastres within your community or any other community within south africa and globally

    asked by Kgantsho
  112. Grammar (Ms. Sue)

    Complete each sentence below, using an objective pronoun. Then, tell how each pronoun is used in the sentence. 1). Skipping rope is a good form of exercise. Some athletes use (?) in their training. 2). My sister loves to jump rope. It gives (?) a chance to

    asked by Anonymous
  113. life orientation

    Recommendations How to address hiv/aids

    asked by Anonymous
  114. life oringtation

    in 10 to 15 lines what are 5 ways in which the human or environmemt problem impacts on the comunty

    asked by khomotso
  115. life oringtation

    in 10 to 15 lines what are 5 ways in which the human or environmemt problem impacts on the comunty

    asked by khomotso
  116. pre calc

    (cos3x)^2+(sin3x)^2=cos(f(x)) find f(x)

    asked by dylan
  117. agricultural science

    outline and explain the objectives of fencing a farmland?

    asked by katlego mbobo
  118. agricultural science

    outline and explain the objectives of fencing a farmland?

    asked by katlego mbobo
  119. precalc

    (cos3x)^4+(sin3x)^4=cos(g(x)) find g(x)

    asked by dylan
  120. agricultural science

    outline and explain the objectives of fencing a farmland?

    asked by katlego mbobo
  121. accounting

    Cindy Lou makes $30,000 per year as an exempt employee. She worked 15 hours of overtime in the month of September. Payday for wages earned in the month of September is October 7. Ignoring Federal and State income tax withholdings, how much would she

    asked by Anonymous
  122. sew

    A chemical substance that causes dyes to set is called?

    asked by brianna
  123. Physical Science

    When will an object float on a fluid's surface? My answer: An object will float on a fluid's surface if only the object is less dense than the fluid?

    asked by Anonymous
  124. life orientation

    what are the institutions/community organization that are involved in supporting or giving redress to these disasters? And how are these organizations are involved in providing a safe and healthy environment?

    asked by edgar
  125. Life Orientation

    Explain 5(or more)factors that contribute to the substance abuse of both Legal and Illegal drugs among the youth

    asked by Millicent
  126. Math (Statistics)

    Two Cards are drawn without replacement from a deck of 52 cards. What are the odds in favor of drawing two honour cards (A,K,Q,J,10)?

    asked by Josh
  127. Science

    When will an object float on a fluid's surface? My answer: An object will float on a fluid's surface if only the object is less dense than the fluid?

    asked by Anonymous
  128. Calc

    HOW TO INTEGRATE : 2π∫x√(1+4x^2exp(-2x^2)) Thank you,

    asked by 999
  129. Life orientation

    Discuss ways poverty in the community/in schools problem impacts

    asked by Berry
  130. maths

    how many square tiles each with side 20cm must be used for a square flooring with sides 10m

    asked by Wesley Frederick
  131. precalc

    (cos3x)^4+(sin3x)^4=cos(g(x)) find g(x)

    asked by dylan
  132. precalc

    (cos3x)^4+(sin3x)^4=cos(g(x)) find g(x)

    asked by dylan
  133. Chem

    A mixture of He Ne and 3rd gas exhibit a total pressure of 486 mm hg if the partial pressure of He125mm mm hg and partial pressure of Ne is 214mm hg what is the mole fraction of the 3rd gas in container

    asked by Ray
  134. science

    comets orbit the sun in a what pattern

    asked by yy
  135. L.o

    Which are the two institutions that help to redress air pollution?

    asked by Phindile
  136. chemistry

    If 10.4 liters of O2 at STP are produced by the electrolysis of water, how many coulombs of charge were required?

    asked by sarah
  137. Math

    How do you find the total number of maximum and minimum points of the function whose derivative is given by f^1(x)=x(x-3)^2(x+1)^4 ???

    asked by Maddie
  138. Chemistry

    calculate the ph 25.00 mL solution of 0.125 M acetic acid (Ka= 1.75 x 10^-5) after the addition of each of the following volumes of 0.100 M KOH: 10.00 mL, Vep and 35.00 mL

    asked by yoo
  139. physics (Newton's law of gravitation)

    Can anyone please help me with this question? I am really confused. A neutron star and a black hole are 2.400e+12 m from each other at a certain point in their orbit. The neutron star has a mass of 2.78×1030 kg and the black hole has a mass of 9.94×1030

    asked by Kathy
  140. math

    1000 [? ] 81 [?] 190 = 10 use BODMAS method

    asked by ninjini
  141. Life Orientation

    What 5 ways which the human or environmental HIV/AIDS problem impacts on the community?

    asked by Zanele
  142. Calculus

    Find the area of the region. f(x) = x^3 g(x) = x^4 In the graph f is above g and they both intersect at (1,1)

    asked by Katie
  143. Calculus

    Graph the parametric equations: x=cos(t) y=sin(t) z=cos(2t) How would I go about solving this problem? thanks!

    asked by Anonymous
  144. English

    What is the last step for planting potatoes? 1. It is to water well. 2. Water well. 3. It is "Water well." (What is the suitable answer for the question?)

    asked by rfvv
  145. English

    Who often joins Sony's family for dinner? 1. Anton's family often joins Sony's family. 2. Anton's family often join Sony's family. (Which one is correct? Do we have to use 'join' or 'joins'?)

    asked by rfvv
  146. math

    Give 0.7ml of metoclopramide syrup very six hours anwer 1 tsp oral syringe with 1 ml marking Who help

    asked by Fai
  147. English

    1. At the dacha, what does Sony's family grow? 2. At the dacha, what do Sony's family grow? (Which question is correct?) 3. They grow vegetables like potatoes and tomatoes. 4. Sony's family grow vegetables like potatoes and tomatoes. 5. Sony's family grows

    asked by rfvv
  148. statistics

    To get an A grade on the test, you need a total score of more than 16 points. One of the students knows the correct answer to 6 of the 20 questions. The rest she guesses at random by tossing a coin (one toss per question, as in 4B). What is the chance that

    asked by AmmanJordan
  149. Life orientation

    Recommandation on how to address hiv/aids

    asked by Lisneth
  150. MATH

    Let U = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10}. (Enter your answers as a comma-separated list. Enter EMPTY or Ø for the empty set.) {1, 4, 8} union {3, 7, 9}

    asked by JESSICA
  151. Physics (Electric charge for charged rods)

    I need help with this question, please. What is the direction of the force between (a) two particles whose charges are the same sign and (b) two particles of opposite sign? (c) What happens to the magnitude of the force when the distance between two

    asked by Kathy
  152. Physics (Electric fields and Coulomb's Law)

    I need help with this question please. An ion harvester is scouring deep space for isolated xenon (Xe+) ions. A xenon ion is singly ionized, and has a charge of +e. If the field meter reads 0.000000202 N/C, how far away is it from the ion? _________ m

    asked by Kathy
  153. physics (Newton"s law of gravitation)

    Please, can someone help me with this? A neutron star and a black hole are 2.400e+12 m from each other at a certain point in their orbit. The neutron star has a mass of 2.78×1030 kg and the black hole has a mass of 9.94×1030 kg. What is the magnitude of

    asked by Kathy
  154. chemistry

    Determine how much of each product (in g or L) is formed. 2.50g of aluminum metal is placed in a large container of concentrated copper (ll) suflate to produce copper metal.

    asked by Amy
  155. Science

    Joe pushes a lawn mower four times as far as Mary while exerting only half the force, who does more work? And by how much?

    asked by Tara
  156. English

    At the end of the play, Mrs. Popov and Smirnov appear to be in love. Considering what has happened in the play, why is this ridiculous?

    asked by Linnie
  157. Maths

    Given that on average, an atom of gold weighs 3.27×10^−22grams, how much does an Avagadro’s number of gold atoms weigh (take Avagadro’s number to be 6.0221415×10^23).

    asked by Katie
  158. math numerical methods

    Consider the following second order differential equation: y"-2x^(2)y+y^(3)=17cos(4x) with y(0)=4 , y'(0)=-9 If we let u=y and v=y′ then as an AUTONOMOUS first order system, the second order differential equation is correctly expressed as:

    asked by mahdi
  159. environment

    What are the two institutions/community organizations that are involved in supporting or giving redress to these disasters of hiv and aids?

    asked by Pretty
  160. Calculus

    Find the derivative of f(x)=ln(e^(2x)/((x^2-4)^3) Please show detail so I can use for reference. Thanks!

    asked by Rene
  161. physics

    A neutral solid conducting cylinder rotates about its axis with angular speed 1600 rad/s. In addition, there is an external magnetic field of induction B directed along the cylinder's axis. What must the magnitude of the magnetic field in Teslas so that

    asked by help
  162. physics

    The velocity of sound in the atmosphere is c=300 m/s. An airplane is traveling with velocity v=600 m/s at an altitude of h=8 km over an observer. How far horizontally past the observer in kilometers will the plane be when the observer first hears

    asked by help
  163. Math

    How many hours does it take for the hour hand to travel as far as the minute hand travels in 40 minutes?

    asked by Liz Marie
  164. Math

    How many hours does it take for the hour hand to travel as far as the minute hand travels in 40 minutes?

    asked by Liz Marie
  165. Life orientation

    10 ways in which the environmental health hazard can impact on one's health

    asked by Nhlanhla
  166. pre calc

    (cos^2)3x+(sin^2)3x=cos(f(x)) simplify expression and find f(x)

    asked by dylan
  167. Life orientation

    What impact causes by cancer on the teenager?

    asked by Njenje
  168. pre calc

    ((cos^4)6x)-(sin^4) 6x=cos(g(x)) find g(x)

    asked by dylan
  169. math

    To select a _________ sample, the population is divided into disjoint subgroups according to some characteristics like income level, and then a few individuals are selected randomly from each of the subgroups to be in the sample. (Points : 1) (May choices

    asked by tammy
  170. english

    does the word "from" get capitalized in a title?

    asked by david
  171. math

    y=x+1 x+y=3

    asked by JIMOH
  172. psychology

    KINDLY GIVE ME 2 PARAGRAPHS, WHY BRAIN IS IMPORTANT?THANK YOU

    asked by PLEASSSEEE HELP MEE
  173. Geometery

    Trapezoid. A = (5+4) x 11/2 = 49.5 Long side is 11 in. bottom base is 4 in Correct? Or you need more info?

    asked by Cole
  174. ladysmith secondary

    Discuss 5 ways How does human or environmental problems impact on the community

    asked by Nicole
  175. English

    What are the shifts in the meaning of the word "CONQUER"? How can they be characterized and what might account for these changes? Thank you

    asked by Thomas
  176. organic chemisty

    write raction of benzoic acid with propylamine

    asked by chemistry
  177. Electric charge and Coulomb's Law

    Can anyone help me explain this problem? Your help is appreciate it. You are given an apple and an orange. The apple has a net charge of +3×10−17 C. The orange has a net charge of −3×10−17 C. With only this information, can you determine which one

    asked by Kathy
  178. Electric fields and Coulomb's law

    Can anybody please help me with this question? Two friends are playing a version of proton golf where the hole is marked by a single proton. The first friend reads his meter, and declares he has a field strength of 27.5 N/C. The second friend looks at her

    asked by Kathy
  179. Electric fields and Coulomb's law

    Please, I need help with this question. An ion harvester is scouring deep space for isolated xenon (Xe+) ions. A xenon ion is singly ionized, and has a charge of +e. If the field meter reads 0.000000202 N/C, how far away is it from the ion?

    asked by Kathy
  180. Calculus

    Find the derivative of the following: f(x)=ln(e^(2x)/(x^2-4)^3 Please show all steps so I can follow Thanks!

    asked by Sean
  181. Calculus

    Use logarithmic differentiation to find the following derivative y=(x+6)^4/(x-5)^6. Please show all steps so I can follow for future understanding. Thanks.

    asked by Sean
  182. Calculus

    Use logarithmic differentiation to find the derivative of the following: y=x^x^2 x>0 Please show all steps so I can following for future understanding

    asked by Sean
  183. Science

    Doe sodium chloride completely dissolve,partially dissolves or insoluble

    asked by Muofhe
  184. Science

    Doe sodium chloride completely dissolve,partially dissolves or insoluble

    asked by Muofhe
  185. Advanced Functions/Trig

    Prove the following: sin(x+y)sin(x-y) = cos^2 (y) - cos^2 (x)

    asked by Zack
  186. math

    how many ways could somebody make a house rectangular house if she used 23 connecting cubes?explain

    asked by damyia
  187. chem!

    You work with the following system: 2X(g) Y(g) At, equilibrium, [Y]=3[X]. If K=10, calculate the [Y] at equilibrium.

    asked by scilover
  188. math

    Find the distance around the track if x=20 feet and y=25 feet

    asked by Paula
  189. algebra 1-2

    what is a natural number?

    asked by kara
  190. Physics

    A long straight horizontal bar vibrates in a ver tical direction with a frequency of 1.50 Hz on the surface of a large tank of water. The vibrations of the bar cause plan e waves to travel across the surface of the water. The waves are described by the

    asked by Meder
  191. Chemistry

    What are the Six possible ratios for the equation for the formation of potassium chloride?

    asked by Jerry
  192. Chemistry

    What are the Six possible ratios for the equation for the formation of potassium chloride?

    asked by Jerry
  193. Writing: Word usage

    What do you call a side result of something? As in A caused B (the intended result) and A also caused C (an unintentional result that occurred, but was beneficial)?

    asked by Cicilia
  194. math

    A polynomial f(x) has degree 8 and f(i)=2^i for i=0,1,2,3,4,5,6,7,8 . Find f(9).

    asked by me
  195. Math

    If Ethan ate 4 times as many cookies as Daniel who at 2 times as many as Courtney how many cookies did Ethan eat if Courtney ate 2.

    asked by Ben
  196. math

    1/2x+1/3y=-7 1/2x+2y=-4

    asked by tesha j w
  197. chemistry

    what is the h+ of a solution with a ph of 10 at 25 degree celsius

    asked by Alex
  198. chemistry

    what will be the internal pressure causes by hydrogen gas when 5.00 g of zinc is dissolved in 50 g of concentrated hydrochloric acid if the volume of the container is 250 mL and the container is allowed to cool 20 degrees celcius

    asked by Danielle
  199. For the function defined by...HELP

    For the function defined by f(x)=3x^2+5x+2, find the following values. (a) f(-4)= (b) f(-x)= (c) -f(x)= (d) f(x+h)=

    asked by Karlee
  200. Math

    what is a exponential notation?

    asked by Anonymous
  201. Music

    How was rock a revolutionary and democratic music?

    asked by Kristy
  202. real estate finance

    Sue is appraising a property using the cost approach. The and (if vacant) has a value of $90,000. The house was built in 1982, has 2300 square feet and she has estimated it has an economic life of 90 years. The replacement cost on this type of construction

    asked by tmouery
  203. physics

    A block of mass m = 7.0 kg is dropped from a height H = 46.0 cm onto a spring of spring constant k = 2360 N/m (see the figure). Find the maximum distance the spring is compressed.

    asked by Anonymous
  204. social studies

    what is one power given to the state government in the Constitution?

    asked by michy
  205. Chemistry

    Calculate the H3O+ ion concentration and the pH at the equivalence point when 45.0 mL of 0.4000 M NH3 is mixed with 45.0 mL of 0.4000 M HCl. Ka=5.6x10-10

    asked by john
  206. eco,

    Suppose that a vegetable vendor pays 7% interest daily on a $10 loan. Then, suppose that this individual was able to save $0.50 per day by drinking less tea. Calculate the number of days it would take for the vendor to no longer need to borrow money in

    asked by kiril
  207. maths

    if a=3+2root2 then find the value of a square- 1by a square?

    asked by tuhituhi
  208. fractions

    what is 4 2/8 plus 5 6/7.

    asked by abigail
  209. management for organization

    Which of the following theories belongs to the modern era of management? (Points : 1)

    asked by stephanie
  210. math

    Will someone please help me solve this problem. Solve and Check 3x^2=2x=5

    asked by timothy
  211. Solving an Equation in one variale

    If x

    asked by Jerrie
  212. math

    I need help solving this problem please. Solve the equation. (x-2)(2x+1)=0

    asked by meka
  213. Solving an Equation in one variale

    If x belongs Z, Solve the equation sq.rt(1) + sq.rt(2) + sq.rt(3) + .......... + sq.rt(x^) + sq.rt(x^+1) + sq.rt(x^2+2) = 5190

    asked by Jerrie
  214. Math

    If a Ferris wheel has a 64 m radius and the center ot the wheel is 84 m above the ground, what is the height of a carriage above the ground starting from 0 degrees to 360 degrees?

    asked by Natalie
  215. Microeconomics

    Is leisure time considered an inferior good when the substitution effect dominates? I think that the answer is yes because if you are willing to work more hours in order to make more money than you do not value leisure time that much. Is this correct?

    asked by Hannah
  216. Math

    Square root of 512rs^6 * square root of t^3

    asked by Avinash
  217. Computer Science

    What is the fastest way to compare two strings containing only numbers. eg: "3423492349328492343.939842903482304" "349832498234932.92384924893294343" There can be at max 20 numbers before and after the decimal place. The majority will be around 20, however

    asked by David
  218. mathematics

    4 distinct integers p, q, r and s are chosen from the set {1,2,3,…,16,17}. The minimum possible value of p/q+r/s can be written as ab, where a and b are positive, coprime integers. What is the value of a+b?

    asked by Sambaran G.
  219. mathematics

    What is the largest 3 digit divisor of N=1024^3−639^3−385^3?

    asked by Sambaran G.
  220. social studies

    Why did pilgrims travel? a. to fight a holy war b. to organize followers c.to pay tribute to a king d. to visit holy places

    asked by becca
  221. mathematics

    Suppose f(x) is a degree 8 polynomial such that f(2^i)=1/2^i for all integers 0≤i≤8. If f(0)=a/b, where a and b are coprime positive integers, what is the value of a+b?

    asked by Sambaran G.
  222. Chemistry

    Propose buffer components to hold a pH of 3.5, let the acid have a concentration of 0.1 M show all work

    asked by Roderick
  223. Chemistry

    Propose buffer components to hold a pH of 9.5, let the base have a concentration of 0.1 M show all work please

    asked by Roderick
  224. Chemistry

    what happens to a battery when it is "recharged"

    asked by Juan
  225. Math

    Roulette is a well known game in which a mechanical device randomly selects one of 38 equally likely numbers. IF a player decides to play by choosing a number, he gains $35 if his number is selected by the device. If any other number is selceted he loses

    asked by Kayla
  226. Biology

    How many daughter cells will one cell have after 3 complete meiosis processes? Answer A) 8 B) 12 C) 16 D) 64

    asked by Kim
  227. math

    prove nC(r-1) + (n+1)C(r-1) + (n+2)C(r-1)+ ... +(n+k)C(r-1) = (n+k+1)Cr

    asked by nCr
  228. Physics

    So if mgh=1/2mv^2 and I'm solving for v is my answer going to be v= squareroot of 2* (gravity) 9.8m/s^2* (height) 3.67m?

    asked by Kay
  229. nyoike

    producea java program which when given 3 sides of a triangle determines whether the traingle is an equilateral an issosceles or a scaline

    asked by henry
  230. social studies

    The main work of representatives in a parliament is a.running trials b.trining an army c. kkeeping the peace d.making laws

    asked by Becky