Questions Asked on
April 29, 2012

  1. kinetic theory

    Air is filled at 60deg C in a vessel of open mouth. Upto what temperature should the vessel be heated so that one-fourth of the air may escape? Ans 171degC

    asked by ridhi
  2. analyzing poem

    The Butterfly - Pavel Friedmann He was the last. Truly the last. Such yellowness was bitter and blinding Like the sun’s tear shattered on stone. That was his true colour. And how easily he climbed, and how high, Certainly, climbing, he wanted To kiss the

    asked by bkue
  3. physics

    An astronaut on the Moon attaches a small brass ball to a 1.00- m length of string and makes a simple pendulum. She times 15 complete swings in a time of 75.0 seconds. From this measurement she calculates the acceleration due to gravity on the Moon. What

    asked by Kristie
  4. college physics

    Superman must stop a 190-km/h train in 180m to keep it from hitting a stalled car on the tracks. part a)If the train's mass is 3.8×10^5kg , how much force must he exert (find the magnitude)? part b)Compare to the weight of the train (give as %). partc)

    asked by john
  5. physics

    A certain radar installation tracks airplanes by transmitting electromagnetic radiation of wavelength 4.0 cm. a)Find the frequency of this radiation. b)Find the time required for a pulse of radar waves to reach an airplane 4.8 km away and return.

    asked by Kristie
  6. area and volume

    A balloon has a circumference of 22in. Use the circumference to approximate the surface area of the balloon to the nearset square inch. possible answers; 154in^2 616in^2 1,521in^2 484in^2 Find the volume of the square pyramid.Round to nearest tenth if

    asked by lilman
  7. physics

    Imagine a Rip van Winkle type who lives in the mountains. Just before going to sleep, he yells, "WAKE UP", and the sound echoes off the nearest mountain and returns 7.6 hours later.Find the distance between Rip and the imaginary mountain.

    asked by Jim
  8. Math

    Luis has $150,000 in his retirement account at his present company. Because he is assuming a position with another company, Luis is planning to "roll over" his assets to a new account. Luis also plans to put $3000/quarter into the new account until his

    asked by Terri
  9. Physics

    A small cork with an excess charge of +6.0 µC is placed 0.25 m from another cork, which carries a charge of −3.2 µC. What is the magnitude of the electric force between the corks? The Coulomb constant is 8.98755 × 10 9 N · m2 /C 2 . Answer in units

    asked by Angel
  10. physics- please help

    Question #1 A 0.140kg- baseball traveling 30.0m/s strikes the catcher's mitt, which, in bringing the ball to rest, recoils backward 14.0cm . What was the magnitude of the average force applied by the ball on the glove? question #2 How much tension must a

    asked by emma
  11. surface area and volume

    I really need some help, I don't fully understand. Exspecially with fractions, don't know how to enter them on calculator. 1. What is the approximate volume of the sphere? 524 m³ (my choice) 1,000 m³ 1,256 m³ 1,570 m³ 2. What is the approximate surface

    asked by lilman
  12. physics

    Rank the beat frequency from highest to lowest for the following pairs of sounds:a. 876 Hz, 871 Hz b. 786 Hz, 784 Hz c. 721 Hz, 728 Hz d. 542 Hz, 541 Hz

    asked by Jim
  13. geometry

    word problem can you help me: a trapezoid has an area of 4 square units, and a height of 1 unit. what are the possible whole numbers lengths for the bases? would the only whole number be; 4? im not sure how to answer this

    asked by marko
  14. math

    Terry, Barry, Larry, Jerry, and Perry are lined up in these positions midway through a track meet: Terry is 20 meters behind Barry. Barry is 50 meters ahead of Larry. Larry is 10 meters behind Perry. Jerry is 30 meters ahead of Terry. Perry is 50 meters

    asked by Anonymous
  15. physics

    question : net force of 225 N accelerates a bike and rider at 2.65m/s^2. What is the mass of the bike and rider together ?

    asked by emma
  16. physics

    what force must the woman in Figure 3.38 exert on the floor with her hands in order to do a pushup?

    asked by Anonymous
  17. Grade 8 Math

    Can you write them in Mathematical/numbers form I'll solve them myself. i don't really get it though i have written the first one in mathematical for but i'm not sure if that's right. 1. When six is subtracted from five times a certain number, the result

    asked by Caroline Sunshine
  18. physics

    An explosion occurs at the end of a pier. The sound reaches the other end of the pier by traveling through three media: air, fresh water, and a slender metal handrail. The speeds of sound in air, water, and the handrail are 355, 1410, and 5380 m/s,

    asked by chelsea
  19. physics

    What beat frequencies are possible with tuning forks of frequencies 258, 263, and 267 Hz?

    asked by Jim
  20. Chemistry

    A 0.5224g sample of an unknown monoprotic acid was titrated with 0.0998M of NaOH. The equivalence point of the titration occurs at 23.82 mL. Determine the molar mass of the unknown acid.

    asked by Confused
  21. Chemistry(Please respond)

    A 23.9 mL sample of 0.283 M trimethylamine, (CH3)3N, is titrated with 0.207 M hydrochloric acid. At the equivalence point, the pH is? I started off by doing 0.283 X 2.39e-2 = 6.76e-3 Then I did 6.76e-3 / 0.207 = 3.36e-2 2.39e-2 + 3.36e-2 = 5.65e-2

    asked by Hannah
  22. Finance

    Hetfield and Ulrich, Inc., has an odd dividend policy. The company has just paid a dividend of $7 per share and has announced that it will increase the dividend by $5 per share for each of the next 4 years, and then never pay another dividend. If you

    asked by T
  23. algerbra

    translate the phrase into a mathematical expression and then simplify. nine times a number subtract twice the same number

    asked by deb
  24. Science

    A diver standing on the diving board has a mass of 89.0 kg and has a gravitational potential energy of 2.50 x 103 J. Determine how high the diver is above the water surface. (Assume the water is at ground level).Use 9.81 m/s2 as the value for gravity.

    asked by JodyAnn
  25. Physics

    A balloon rubbed against denim gains a charge of −2.0 µC. What is the electric force between the balloon and the denim when the two are separated by a distance of 5.0 cm? (Assume that the charges are located at a point.) The value of the Coulomb

    asked by Angel
  26. Stats

    A manufacturer wants to increase the absorption capacity of a sponge. Based on past data, the average sponge could absorb 3.5 ounces. After the redesign, the absorption amounts of a sample of sponges were (in ounces): 4.1, 3.7, 3.3, 3.5, 3.8, 3.9, 3.6,

    asked by Tom
  27. physics- please help

    World-class sprinters can accelerate out of the starting blocks with an acceleration that is nearly horizontal and has magnitude 15m/s^2 . Part a)How much horizontal force F must a sprinter of mass 60kg exert on the starting blocks to produce this

    asked by Emma
  28. Science

    Vanessa pushes a box with 50 N of force. The box accelerates 2 m/s2 for 10 seconds. What is the mass of the box?

    asked by Jessica
  29. physics

    A uranium nucleus 238U may stay in one piece for billions of years, but sooner or later it de- cays into an particle of mass 6.64×10−27 kg and 234Th nucleus of mass 3.88 × 10−25 kg, and the decay process itself is extremely fast (it takes about

    asked by kate
  30. science

    write a skeleton equation for this reaction hydrogen iodide(g)->hydrogen+iodide(G)

    asked by Jessica
  31. calculus

    Find the area enclosed between f(x)=05x2+3 and g(x)=x from x=−8 to x=3.

    asked by carlton
  32. Econ/stats

    The following data represent the number of flash drives sold per day at a local computer shop and their prices. Price (x) Units Sold (y) $34 3 36 4 32 6 35 5 30 9 38 2 40 1 a. Develop a least-squares regression line and explain what the slope of the line

    asked by Ruth
  33. Honors Trig.

    A plane is flying at a speed and direction of 550 mph, 25 degrees north of west. There is a wind of 28 mph, at an angle of 19 degrees south of the east direction. How fast is the plane actually flying? What direction is the plane traveling?

    asked by Ashley
  34. science-chemistry

    a bicycle tire that has a volume of 0.85L is inflated to 140 pounds per square inch. What will be the pressure in the tire if the number of moles of gas is doubled?

    asked by Bryan
  35. calculus

    A tight rope is stretched 30 feet above the ground between the Jay and the Tee buildings, which are 50 feet apart. A tightrope walker, walking at a constant rate of 2 feet per second from point A to point B, is illuminated by a spotlight 70 feet above

    asked by Naseba
  36. geometry

    i have to find the area of an irregular polygon how can i draw a picture to send you to show you? is this possible?

    asked by marko
  37. critical thinking

    Homework Help: critical thinking Posted by long on Thursday, March 8, 2012 at 1:53pm. Read the scenario. Using the information provided in the references and lesson, arrive with your best possible solution. You are a squad leader in Sapper platoon, Special

    asked by derrick
  38. Maths

    Alfred spent 1/4 of his money on food,1/3 on clothing and saved the rest.If he saved #72,000.How much did he spend on food?

    asked by Chibueze
  39. Stats

    Consider the following Hypotheses test: Ho:m>=80 Ha:m

    asked by bobbie
  40. Chemistry

    A 1.00 L flask containing the equilibrium mixture CO +Cl2 COCl2 was found to contain 0.400 mol of COCl2, 0.100 mol of CO, and 0.500 mol of Cl2. If 0.300 mol of CO is added at constant temperature, what will be the new concentrations of each component at

    asked by Divya
  41. chemistry

    A 115 mL sample of a 10.0 M ethylene glycol (C2H6O2) solution is diluted to 1.30 L. What is the freezing point of the final solution? (Assume a density of 1.06 g/mL for the final solution.) What is the boiling point of the final solution? How would I go

    asked by Jen
  42. finite math

    3. The campus radio station WVAS surveyed 190 students to determine the types of music they liked. The survey revealed that 114 liked rock, 50 liked jazz, and 41 likes blues. Moreover, 14 liked rock and jazz, 15 liked rock and blues, 11 liked blues and

    asked by cjones
  43. Calculus

    Consider the area between the graphs x+1y=12 and x+8=y2 . This area can be computed in two different ways using integrals First of all it can be computed as a sum of two integrals Interval a to b f(x)= i put 12-x but it's wrong Interval c to b f(x)= i put

    asked by jasmineT
  44. Algebra 2

    If an object is thrown vertically upward with an initial velocity of v, from an original position of s, the height h at any time t is given by: h=-16t^2+vt+s(where h and s are in ft, t is in seconds and v is in ft/sec) A package is thrown downward with an

    asked by Kelsey
  45. statistics

    A widget factory's worker productivity is normally distributed. one worker produces an average of 75 widgets per day with a standard deviation of 20. another worker produces at an average rate of 65 per day with standard deviation of 21. 1)what is the

    asked by Anonymous
  46. biology

    In some dogs, long hair (L) is dominat over short hair (l), and wavy hair (W) is dominant over straight hair(w). Draw a cross between a dog that is homozygous for long hair and straight hair with a dog that is homozygous for short hair and wavy hair. What

    asked by Webdy
  47. chemistry

    How many moles of Ca(NO3)2 are needed to make 0.250 liters of a 0.200 M Calcium nitrate solution?

    asked by AJ
  48. Physics

    a 1.5kg cannon is mounted on top of a 2.0kg cart and loaded with a 52.7 gram ball. The cannon, car, and ball are moving forward with a speed of 1.27m/s. The cannon is ignited and launches a 52.7 gram ball forward with a speed of 75m/s. Determine the

    asked by Sarah
  49. algebra

    x^2 +4x +9y^2 -36y +4=0

    asked by bill
  50. Math

    What initial investment at 9% compounded semiannually for 5 years will accumulate to $15,000?

    asked by Tar
  51. ALGEBRA

    Find the APR for the following loan (monthly payments). (Round your answer to the nearest full percent.) Purchase a refrigerator for $2,100 at 20% add-on interest for 3 years.

    asked by Mike
  52. Desktop publishing-Elements of Design

    Well i took this test and failed. This is the last test and i graduate. I posted [my answers] to the ones i think are right. 1. Study the following sentence, then select the answer that best describes it. THE COW JUMPS OVER THE MOON! A. Italic serifed type

    asked by Caralynn93
  53. Chemistry(Please help)

    Calculate the concentration of HCO3- in an aqueous solution of 0.0885 M carbonic acid, H2CO3 (aq). I was going to set this up as 0.0885 -x = ? Am I suppose to use the Ka value for carbonic acid?

    asked by Hannah
  54. Chemistry

    Write the IUPAC name for straight-chain hydrocarbon with this formula: CH3CH2CH2CH2CH2CH2CH3 Write the IUPAC name for any branched-chain hydrocarbon with this formula:C9h20

    asked by Allison
  55. @elena

    thank you so much help with the problem. i have trouble solving part b of the problem you helped me with. it told me to give it as a percentage, I got 10% but it is wrong. can you please help me Superman must stop a 190-km/h train in 180m to keep it from

    asked by john
  56. Chemistry

    For the strong acids find the [H3O]and [OH] in a solution that is .785% HNO3 by mass (assume a density of 1.01 g/ml). If someone could offer step by step instructions, that would be terrific!

    asked by Beth
  57. science-chemistry

    please anwser soon, a rigid 4.10L flask contains a mixture of 1.25 moles of H2, 0.250 mole of O2, and sufficient Ar so that the partial pressure of Ar in the flask is 1.00 atm. The temperature is 63.5 degrees C A) Calculate the total pressure in the flask

    asked by Bryan
  58. chemistry

    How many grams of oxygen are collected in a reaction where 245 mL of oxygen gas is collected over water at a temperature of 25 ^\circ {\rm C} and a total pressure of 688 torr

    asked by raul
  59. Probability and Statistics 2

    The numbers below represents heights (in feet) of 3-year old elm trees, where leaves represent fractional parts of each value. Stems Leaves 5 1,8 6 1,2,4,7,8,9 7 0,2,3,3,4,5 8 1,1,2,3,5,6,6,7,7,9,9 9 0,1,3,4 a) Find the five number summary for the given

    asked by Kim
  60. chemistry

    if 180 grams of ice at -123 degrees celsius is heated to steam at 125 degrees celsius, how much energy would it take?

    asked by Anonymous
  61. statistics

    For a normal distribution with a mean of 140 and a standard deviation of 55 find each value requested. a. What is the minimum score needed to be in the bottom 10% of the distribution? b. What scores form the boundaries for the middle 75% of the

    asked by tammy
  62. chemistry

    Calculate the theoretical pH when 5.00 ml of 0.0100 M HCl is added to 30.00 mL of deionized water.

    asked by vivian
  63. uniben

    A rubber ball is dropped from a height of 10meters,suppose it rebounds one-half the distance after each fall.find the total distance the ball travels before coming to rest.

    asked by wilfred
  64. physics

    Light has a maximum constant speed in which of the following? A) water.B) red glass.C) the upper atmosphere.D) clear glass.E) between the atoms in glass, water, or the atmosphere. IS THIS C THE UPPER ATMOSPHERE?

    asked by Kristie
  65. Chemisty (please read soon)

    which will become a buffer in 1L of H2O? a) 0.3 mole KOH & 0.3 mole HBr b) 0.5 mole NH3 & 0.5 mole HCl c) 0.2 mole NaCl & 0.3 mole HCl d) 0.2 mole NaOH & 0.2 mole HBr e) 0.4 mole HC2H3O2 & 0.2 mole NaOH I think that the answer is e. Is that correct?

    asked by Zac
  66. science

    an empty density bottle weighs 25 gram. when completely filled with water, it weighs 55 gram and when completely filled with a liquid, it weighs 52 gram. calculate volume and density of the bottle.

    asked by Surabhi
  67. CBSE

    How much heat must be removed to change 75.0 grams of water at 25.0 C to ice at -35.0 C?

    asked by tulasi
  68. precalculus

    a rectangular piece of cardboard measuring 14 inches by 27 inches is to be made into a box with an open top by cutting squares of equal size from each corner and golding up the sides . let x represent the length of a side of each square. for what value of

    asked by kim
  69. math

    An arithmetic series has a first term 8 and third term 20. What does the fifth term equal? What does the second partial sum equal?

    asked by Kasey
  70. chemistry

    Substance X has a molar extinction coefficient (E) of 4725 l.mol-1 cm-1. How many micromoles of X are needed to produce an absorbance of 1.0 in a 1 ml cuvette?

    asked by tulasi
  71. high school diploma

    what correction should be made to this sentence? one of the lifelong memories many of us share are the moment we obtained a driver's license?

    asked by wilna
  72. chemistry 101

    The enthalpy change was determined for the following reactions; Ca (s) + CO2 (g) + ½ O2 (g ) → CaCO3 (s) ΔH = -812.8 kJ/mo l Ca (s) + ½ O2 (g) → CaO (s) ΔH = -634.9 kJ/mo l What is the enthalpy change for the following reaction? CaCO3 (s) → CaO

    asked by Anonymous
  73. physics

    Two projectiles A and B are projected at the same time in the same vertical plane. A is projected at a height of 2m above the ground making an angle of 30deg with the horizontal. B is projected with the velocity of 20m/s at an angle of 60deg with the

    asked by ridhi
  74. Science-Chemistry

    1.)A sample of oxygen took 55 seconds to travel a certain distance. How long would it take for the same number of moles of nitrogen to travel the same distance. 2.) A sample of hydrogen gas traveled 45m in a given amount of time. An unknown gas traveled

    asked by Bryan
  75. physics

    a 1250 kg car, rolling at 40km/h along a flat frictionless surface strikes a horizontal coiled spring and is brought to rest in a distance of 2.5m. Assuming there is no friction, what is the spring constant of the spring?

    asked by amanda
  76. psychology

    Discuss the biological consequences of stress as outlined by psychoneuroimmunologists. thank you

    asked by Jinu
  77. algebra 2

    Coffee Express sells three drinks -lattes mochas and cappuccinos. Each latte has 3 ounces of espresso and 13 ounces of milk. Each mocha has 3 ounces of espresso 11 ounces of milk and 2 ounces of chocolate syruo. Each cappuccino had 5 ounces of espresso and

    asked by Anonymous
  78. GED-Word Problems

    If 7 3/8 pounds of peanuts, 2 1/4 pounds of walnuts, and 1 pound of pecans are divided equally to create 5 bags of mixed nuts, how much does each bag weigh?

    asked by kayla
  79. statistics

    Lorraine was in a hurry when she computed a confidence interval for . Because was not known, she used a Student's t distribution. However, she accidentally used degrees of freedom n + 1 instead of n - 1. v Will her confidence interval be longer or shorter

    asked by trina
  80. spanish

    Escribe el cual (la cual, los cuales, las cuales) o lo cual en el espacio. Nos invitaron a cenar con ellos, ____ fue una buena idea.

    asked by david
  81. Chemistry - Kp

    What is the Kp for the following reaction: 2NH3(g) --> N2(g) + 3H2(g) This reaction is contained in 1.0 L container at 1,000 K and has reached equilibrium. (Kc = 4.0 x 10^-2). You have initially added 1,220 moles of NH3(g) in the flask.

    asked by Addyson
  82. Enviro Science

    2. The water resources of Earth are located in a. salt water found in the ocean b. freshwater found in icecaps and glaciers c. fresh water found in rivers, lakes, and streams d. all of the above C 4. Weather is the state of the atmosphere at a moment in

    asked by mysterychicken
  83. chemistry

    a 1.00g sample of water is allowed to vaporize completely in a 10.0L container. What is the pressure of the water vapor at 150 degrees celsius?

    asked by carter
  84. english

    choose two literary devices such as foreshadowing in sense ans sensibility

    asked by kkkkk
  85. chemistry

    The combustion of propane is given by the following reaction: C3H8 (g) + 5 O2 (g) ---> 3 CO2 (g) + 4 H2O (g) If 5.00 L of propane are burned in in the presence of excess O2, how many liters of carbon dioxide will be formed?

    asked by zarmeen
  86. chemistry

    balnce this equation, and show work Crl3 + KOH + Cl2--> K2Cr2O7 + KIO4 + KCL + H2O

    asked by cece
  87. Probability and Statistics 2

    The University of Southern Mississippi currently uses GE brad fluorescent light bulbs that have a mean life of 900 hours. Sylvania clams that its new fluorescent bulbs, that cost the same as the GE bulbs, last longer than the GE brand. A sample of 50

    asked by Kim
  88. English Parallelism

    I need help with parallelism i need to rewrite these sentences. 1. Because of prejudice in the corporation, not only did he leave but also sued for two million dollars; he did not win the case in court. 2. Since he wanted neither to get a ticket nor bother

    asked by Courtney
  89. english

    what point about technology was Ayn Rand making by portraying such a primative future, and how do the events of the story establish that point?

    asked by Michelle
  90. physics

    Describe the operation of electrons in a conductor

    asked by Esther
  91. Biology

    True or false? (if false, replace word in *here*) 1) The random changes of allele frequencies associated with genetic drift frequently lead to a *gain* in genetic diverse. 2) *sexual selection* helps maintain the Hb^a/Hb^s heterozygous conditions in

    asked by Max
  92. Life Orientation

    Write a paragraph of approximately 100 - 150 words in which you make 5 recommendations on how to overcome the style/cancer disease behavior.

    asked by Nicola
  93. Chemistry

    Calculate the cell potential for the following reaction as written at 79C given that [Zn^+2] = 0.819 M and [Ni^+2] = 0.014 M. Zn + Ni^+2 = Zn^+2 + Ni I know: E=E -RT/nF ln Q reduction potential for Ni= -0.26 reduction potential for Zn = -0.76 so E standard

    asked by Mima
  94. probability and statistics

    An electrical firm manufactures light bulbs that have a usuable life that is normally distributed with a mean of 1000 hours and a standard deviation of 80 hours. Find the probability that a package of 4 bulbs would last at least 4400 hours.

    asked by Kim
  95. Probability and Statistics

    The school superintendent would like to estimate the proportion of adults in the country that are in favor of an increased emphasis on the basics of education. A randomly selected sample of 150 adults found that 107 of them would favor an increased

    asked by Kim
  96. calculus

    Find the area of the region enclosed by y=6x2 and y=x2+15

    asked by carlton
  97. ALGEBRA

    A car dealer will sell you a used car for $8,734 with $734 down and payments of $384.67 per month for 24 months. What is the simple interest rate? (Round each answer to the nearest tenth.)

    asked by Mike
  98. Programming Logic

    Find bugs. // The two senior class homerooms at Littleville High School // are having a fundraising drive for the prom. Each time a student // solicits a contribution, a record is created with the // student's name and the value. Two files have been

    asked by Tina
  99. statistics

    1. Using the population figure (N of Cases) which is 45,000 compute the proportion of population members that died during 2007 if there were 4000 deaths during that year. Produce the answer rounded off or preset to include 3 decimal places. 2. Using the

    asked by Anonymous
  100. Physics

    Tom Brady (the Patriots’ quarterback) throws a football – at a speed of 30 mph at an angle of 50 degrees to the horizontal – toward an intended receiver 20 yd straight downfield behind the goal-line. The pass is released 7.5 ft above the ground.

    asked by Bob
  101. Chemistry

    Cadmium and a solution of cadmium(II) nitrate are used with tin and a solution of tin(II) nitrate to construct a galvanic cell. 1) The reaction run initially at standard state with 100-mL samples of each solution is allowed to proceed until 8.0 g of tin

    asked by chamy
  102. Freshman English

    Can someone summarize To Kill a Mockingbird for me? I still don't get it.

    asked by Makenzie
  103. Mechanics M1

    Q.1 Find the force needed to accelerate a 2 kg block at 3m/s^2 up a rough plane (coefficient of friction 0.2) inclined at 25 degree to the horizontal if the force is a) Parallel to the slope b) horizontal c) at 45 degree to the upward verticle

    asked by Jat
  104. Math -Urgent!!!

    List all the possible rational zeros of f(x)=3x^3-x^2+2x=2. Please help me. I don't understand how to do this. Can someone show me please.

    asked by Tabby
  105. math

    Find the volume of the solid obtained by rotating the region bounded by the given curves about the specified axis. y=0, y= \cos(x), x = \frac{\pi}{2}, x = 0 about the axis y= -3 You might need to use the identity: cos^2(x) = \frac{1}{2}(cos(2x) + 1).

    asked by hamlet
  106. Math

    a young Colorado spruce tree is growing at a rate of 20 cm per year. Currently, it is 244 cm tall. A 300 cm tall white spruce tree is growing at a rate of 12 m per year. In how many years will the two trees be the same height? Solve algebraically

    asked by Hanu
  107. economics

    Give a numerical example to show that a monopolist's marginal revenue can be upward-sloping over part of its range. Hint: The price on the demand curve is the producer's average revenue

    asked by dee dee
  108. stats

    suppose that the wait time at the bank is uniformly distributed in the interval 4-min-8min find the probability that a randomly selected customer has to wait longer than 6.5 minutes

    asked by zuly
  109. Statistics

    The following data represent the number of flash drives sold per day at a local computer shop and their prices. Price (x) Units Sold (y) $34 3 36 4 32 6 35 5 30 9 38 2 40 1 a. Perform an F test and determine if the price and the number of flash drives sold

    asked by Paul
  110. Chem (please read soon)

    50.0mL of 0.1 molar NaOH is added with 50.0mL of 0.1 molar CH3COOH. The Ka = 1.8*10^-5. what is the pH of the solution? a) 7.00 b) 9.22 c) 4.77 d) 8.22 e) 5.78 I think that the answer is d. Would i be safe in saying that?

    asked by Zac
  111. Algebra 2

    Coffee Express sells three drinks -lattes mochas and cappuccinos. Each latte has 3 ounces of espresso and 13 ounces of milk. Each mocha has 3 ounces of espresso 11 ounces of milk and 2 ounces of chocolate syruo. Each cappuccino had 5 ounces of espresso and

    asked by Anonymous
  112. physics

    The feature that our eyes are most sensitive to seeing is which of the following? A) edges or boundaries.B) images that fall on the blind spot.C) gray areas.D) anything at the periphery.E) all light of moderate intensity.

    asked by Kristie
  113. math

    lim x--->pi/4 tanx - cotx / x - pi/4

    asked by carla
  114. Chemistry

    Please check a Nernst equation for me? Calculate the cell potential for the following reaction as written at 61 °C, given that [Zn2 ] = 0.800 M and [Fe2 ] = 0.0170 M. Half reactions: Zn-->Zn^2+ + 2e^- (potential= -0.76)(anode) Fe^2+ + 2e^- -->Fe

    asked by Miaow
  115. Math

    the formula for the surface area of a cylinder is: A=2πrh+2πr^2 If the height of the cylinder is 10 inches, and the surface area is 200 sq. inches, determine the length of the radius

    asked by Nancy
  116. Probability and Statistics

    A research psychologist believes that professional athletes tend to be more confident than the typical person. From previous testing, he knows that the scores for people in the general population are approximately normally distributed with a mean of 72 and

    asked by Kim
  117. Probability and Statistics

    The ACT scores of applicants to college are approximately normally distributed with a mean of 20.3 and a standard deviation of 3.1. If a random sample of 20 applicants to college is chosen find the probability that their average ACT score will be 19 and

    asked by Kim
  118. calculus

    does sin(1/x) converge or diverge?

    asked by inu
  119. Programming logic

    Finding the bugs. // Each time a salesperson sells a car at the Pardeeville New and Used Auto Dealership, // a record is created containing the salesperson’s name and the amount of the sale. // Sales of new and used cars are kept in separate files

    asked by Alisa
  120. statistics

    a random sample of 20 prices for summer sleeping bags was taken with a sample mean of $83.75 and a sample standard deviation of $29.97

    asked by julie
  121. Probability and Statistics

    The PGA would like to test to see if there is any difference in the distance produced by Titleist and Maxfli brand golf balls. A sample of 36 Titleist golf balls produced x1bar = 292ft, s1=16ft, while a sample of 48 Maxfli golf balls produced x2bar =

    asked by Kim
  122. Manigerial Accounting

    This is an extra credit assignment I was assigned that I really need the points for. I am having alot of trouble with it. I did a few of the questions but im not sure if they are right or not and I don't know how to do a few. For number 1 (Listed below)

    asked by Brian
  123. Maths trig

    Use compound angle formulae to express Second harmonic i2= sin2t and the the third harmonic i3=sin3t in terms of the first harmonic sint

    asked by Stephan pultree
  124. physics

    an object of mass 0.1kg is rotated in a horizontal circle by a string 1m long. the maximum tension in the string before it breaks is 50N.what is its maximum frequency reached?

    asked by ridhi
  125. Bio- anatomy

    How can i describe in like 1 or two sentences "visual image processing" without using those three words. I am finding this really hard. Thanks!

    asked by Nicole
  126. (Psychology)

    Can someone rephrase this!?!?!? Discuss the biological consequences of stress as outlined by psychoneuroimmunologists.

    asked by Jinu
  127. Physics

    Two friends are at the local high school track, a circle measuring 440 yards for one complete lap. Abe can jog at 8.2 miles per hour while Bob’s jogging speed is 4.6 miles per hour. If they both start at the same point and jog in the same direction (say

    asked by Bob
  128. physics

    how much must a car produce to drive 150 km if an average force of 500 N must be maintained to overcome friction?

    asked by Anonymous
  129. math aig

    Tyrone rounded 23.94 to 24.How did he round? A to the nearest hundredth B to the nearest tenth C to the nearest one D to the nearest ten my answer is c am i right.

    asked by lidia
  130. chemistry

    a salt solution is evaporated to dryness. If 25.7 g of the solution leaves 1,949 mg of dry salt, what is the percent concentration (w/w) of the salt in the solution

    asked by Randy
  131. physics

    A cup with refractive index n2 = 1.8 has outer radius b = 6.0 cm and inner radius a = 4.0 cm. It is filled with a liquid with refractive index n3 = 1.3. In the surrounding medium with n1 = 1.0,a ray of light travels along a trajectory that is at a

    asked by Rams
  132. chemistry

    calculate the molarity of an acetic acid solution if 39.96 mL of the solution is needed to neutralize 136mL of 1.41 M sodium hydroxide. the equation for the reaction is HC2H3O2(aq) + NaOH(aq) > Na+(aq) + C2H3O2(aq) +H2O(aq)

    asked by Randy
  133. Algebra

    a farmer wants to enclose a rectangle garden using the sides of her barn as one side of the rectangle. what is the maximum area which she can enclose with 60ft of fence? what should the dimensions of the garden be to give this area? Max area which she can

    asked by ShelbyA
  134. Algebra

    -4x+1-2(x-1)= -4(x-4)

    asked by David
  135. Algebra 2

    A package with square ends has combined length and girth(girth is perimeter of a cross section) of 120 in. The surface area of the entire package is 3600 sq. in. Determine the dimensions of the package. s in. * s in.* l in. One solution is: 11.08in. *

    asked by Nancy
  136. math

    Find the equation for the surface formed by rotating (x = 3*cos(y)) about the y axis. Your answer must not contain radical symbols (square root signs).

    asked by hamlet
  137. Chemistry

    50.0mL of 0.01M Ba(OH)2 is added to 150.0mL of 0.01M HNO3. What is the new pH of the solution?

    asked by Zac
  138. economics

    could you calulate the total, average variable, and average cost, when a company marginal cost of production is $5.00 per unit and fixed costs are $20.00

    asked by Anonymous
  139. Economics/History

    What trend did Johan Palmstruch start in Europe? How successful was this trend?

    asked by Labz
  140. Chemistry

    0.200 moles of NaF are added to 1L 2.0 molar HF. The Ka = 7.2*10^-4. What is the pH? a) 2.14 b) 6.70 c) 10.80 d) 3.00 e) 7.00 I got 4.14. pH = -log(Ka)-log([NaF]/[HF]) ==> pH = -log(7.2*10^-4)-log(.2/2) ==> pH = 4.14 Or did I do something wrong?

    asked by Zac
  141. life orientation

    a clear explanation on human factors that may cause ill health,accident,crises or disaster on drug addiction

    asked by vinoliah
  142. Chemistry

    This volume of base and its corresponding pH is known as the______

    asked by Jane
  143. statistics

    You are designing a study to determine whether music has an effect on learning. Previous research indicates that the standard deviation to learn a task is 3.4 minutes. How many subjects would you need to ensure with 90% confidence that the estimate is

    asked by tammy
  144. Life Orientation

    Ways in which Air pollution impact on the community

    asked by Jane
  145. algebra

    Is it possible for a degree-4 polynomial P(x) to have only complex (no real) roots

    asked by nash
  146. biology

    Initially, how do skeletal muscles (the type of muscle attached to bones) make ATP? write the reaction for this procss (Crp +ADP => Cr + ATP) as a 'coupled' reaction, identifying the exergonic and endergonic reactions. what would this type of ATP

    asked by livleen
  147. Life Orientation

    Suggest 5 recommendations on how to address the environmental problems that you have identified in the previous question

    asked by Nicola
  148. math

    if 1 centimeter on a map repesents 10 kilometers then 6cm represents how many km/

    asked by Ryan
  149. Life Orientation

    Provide 5 ways in which you critically discuss how cancer impacts on a teenager

    asked by Nicola
  150. ALGEBRA

    Fill in the blanks. (Round your answers to the nearest dollar.) Interest Principal Rate Time Future Value

    asked by Mike
  151. Pre-calc

    Heres the equation: (x^2)-(4y^2)-(4x)+(24y)-(36)=0 Your supposed to find the coordinates of the center, foci, and vertices, and the equations of the asymptotes of its graph. So first you complete the square right? (x^2 -4x+4)-4(y^2 +6y+9)=36+4+36

    asked by Maya
  152. Chemistry - Kp

    What is the Kp for the following reaction: 2NH3(g) --> N2(g) + 3H2(g) This reaction is contained in 1.0 L container at 1,000 K and has reached equilibrium. (Kc = 4.0 x 10^-2). You have initially added 1,220 moles of NH3(g) in the flask.

    asked by Addyson
  153. math

    Write the slope-intercept equation for the line with slope -2/5 and y-intercept (0, -3) and graph the line.

    asked by Yvette
  154. psychology

    Can the expression on your face produce the emotion which you would like to experience? Explain. ------ I believe that expression on ourface produce the emotion which we would like to experence. right? even though we are sad inside we tend to be happy. and

    asked by Vince
  155. geometry

    Find the coordiantes of the center and the radius of each circle a. (x+root5)^2 + y^2 -8y =9

    asked by lindsay
  156. statistics

    an auditor wishes to test the assumption that the mean value of all accounts receivable in a given firm is $260.00 she will reject this claim only if it is clearly contradicted by the sample mean. the sample standard deviation of 36 accounts is $43, the

    asked by b
  157. pre algebra

    The half-life of 234U, uranium-234, is 2.52 105 yr. If 98.6% of the uranium in the original sample is present, what length of time (to the nearest thousand years) has elapsed?

    asked by Anonymous
  158. Chemistry

    How much heat is either ______(absorbed or given off) when 91.45g of HI decomposes to H2 and I2 at 25 degrees C? What goes in the blank and how much heat? Thanks!

    asked by Greg
  159. statistics

    a random sample of 20 prices for summer sleeping bags was taken with a sample mean of $83.75 and a sample standard deviation of $29.97 a. Find a 95% confidence interval for the mean price of all summer sleeping bags. b. what is m i.e., what is the margin

    asked by julie
  160. english essays

    Need help to proofread essay...

    asked by cj
  161. Economics

    You bought the bond for $1,040, after 6 months you received a coupon of $35 and after another 6 months you received another $35 coupon and you sold the bond for $1,070. What would be your total dollar return in that case? What would be your total

    asked by Sarah
  162. Chemistry

    What is the pH of the solution created by combining 12.30 mL of the 0.10 M NaOH(aq) with 8.00 mL of the 0.10 M HCl(aq)? with 8.00 mL of the 0.10 M HC2H3O2(aq)? mL NaOH:12.30 pH w/ HCl _________ pH w/ HC2H3O2 _________ What are the pH values if you take

    asked by HELP!!
  163. Rational Forms

    List all the possible rational zeros of f(x)=3x^3-x^2+2x=2. Please help me. I don't understand how to do this. Can someone show me please.

    asked by Tabby
  164. Physics

    A juggler has a set of balls that she can toss into the air. If it takes her 0.2 s to transfer a ball from the receiving hand to the launch hand and she is able to throw a given ball straight up with a maximum speed of 10 m/s how many balls can she

    asked by Bob
  165. Math

    1)Use the definitions sin0(theta) = y/r, cos0(theta) = x/r and/or tan0(theta) = y/x to prove that cot0(theta) = 1/tan0(theta) 2)For all 0(theta) prove: a)cos(t) = 1/sec0(theta) b. sec(t) = 1/cos0(theta)

    asked by abeer
  166. Algrbra 1

    (d+7)^2=0

    asked by Makenzie
  167. physics

    a book having a mass of 1.3kg lies on a shelf 1.8 m above the floors in a room whose ceiling is 2.5 m high. What is the books gravitational energy relative to the floor?

    asked by Jen
  168. Mechanics (M1) A level?

    A block moves on a rough slope of length 10 m inclined at 30 degrees to the horizontal. The coefficiebt of friction between the block and the slope is 0.4. The block starts from rest at the top of the slope. a) Find the speed at which the block reaches the

    asked by Jat
  169. ALGEBRA

    If $835 is invested in an account that earns annual interest of 4.5%, compounded semiannually, what will the account balance be after 13 years? (Round your answer to the nearest cent.)

    asked by Mike
  170. chemistry

    calculate the molarity of an acetic acid solution if 39.96 mL of the solution is needed to neutralize 136mL of 1.41 M sodium hydroxide. the equation for the reaction is HC2H3O2(aq) + NaOH(aq) > Na+(aq) + C2H3O2(aq) +H2O(aq)

    asked by Randy
  171. chemistry

    how many moles of sodium chloride are in 937 mL of a 1.88 M solution of sodium chloride?

    asked by Randy
  172. Physics- Final exam help

    A proton with kinetic energy 100 keV is moving in a plane perpindicular to a uniform magnetic field of magnitude 2.3 T. Find the radius of its orbit. Not sure what equation to use or how to solve.

    asked by Tim
  173. finite math

    2. The Witherspoon Down Company specializes in making down jackets, ski vests, and comforters. The requirements for down and labor and the profits earned are given in the following chart: Down (pounds) Time (labor-hours) Profit ($) Jacket 3 2 6 Vest1 2 1 6

    asked by cjones
  174. finite

    1. Alabama State University’s Bookstore has determined that the supply function for a certain author’s newest book is p = (1/300)q + 13. The demand function for this book is p = -.03q + 19. Graph both demand and supply functions on the same set of

    asked by cjones
  175. geometry

    Find the coordinates of the center and the radius of a circle with and equation of: a. x^2 + 2root7x +7 + (Y-root 11)^2 =11 b. x^2 -12x + 84 =-y^2 + 16y

    asked by lindsay
  176. Help W/ Definite Integrals

    Evaluate the definite integral of (4x^3-x^2+2) from 5 to 2. Can someone please explain what I'm being asked to do? My book is not clear on this concept.

    asked by Tabby
  177. no

    Mendez invested Dhs ------------------ cash and Equipments ------------------------- in the business. 4 Purchased land costing Dhs ------------------------ for cash. 8 Incurred advertising expense of Dhs -------------------- on account. 11 Paid salaries to

    asked by medo
  178. math

    Suppose that z(x,y) may be defined implicitly by {x}^2 - {y}^2- {z}^2 = 16, enter inequalities for the domain (x and y values) and the range (z values).

    asked by hamlet
  179. Algebra

    Determine the comparable interest rate for a $60,000 loan when the quoted information is 10.7% + 0.5 pt + $200. (Round your answer to two decimal places.

    asked by Tosha
  180. Physics

    after an ice show, Michelle helps clear the props from the ice. Standing in her skates next to a potted artifical tree, she gives it a push. The tree, which has a mass of 6500g, slides forward at a velocity of 13m/s. Michelle, with a mass of 40.0kg, slides

    asked by Sarah
  181. geometry

    in segment pt, l is the midpoint of pa and a is the midpoint of pn. if pn = 17 and la = 3.5, what is the length of nt?

    asked by Corey
  182. Linear Algebra - Question

    I have this number that I just wanted to be sure how to do. They give me a Parallelepiped with corners lettered from A to H. Then the question is: In a certain orthonormal reference, the coordinates of points A, B, D and E are respectively A(0,0,2)

    asked by Jer
  183. Life orientation

    Provide recommendations on how to address the human orenvironmental problem that you identified in the previous question.

    asked by Anonymous
  184. Physics- Final exam review

    A proton with kinetic energy 100 keV is moving in a plane perpindicular to a uniform magnetic field of magnitude 2.3 T. Find the radius of its orbit. Not sure what equation to use or how to solve

    asked by Tim
  185. economics

    could you calulate the total, average variable, and average cost, when a company marginal cost of production is $5.00 per unit and fixed costs are $20.00

    asked by Anonymous
  186. Probability and Statistics 2

    Minute Maid orange juice company claims that 25% or more of all orange juice drinkers prefer its product. To try to disprove the validity of this claim, Tropicana orange juice company sample 200 orange juice drinkers and found that 41 prefer the Minute

    asked by Kim
  187. physics

    Is it true that all radio waves are faster than all sound waves—no exceptions? A) False always.B) True, in most common cases.C) False in some cases.D) True in all cases.

    asked by Kristie
  188. trig

    a 6 foot tall man is standing near a tree on level ground .if the man shadow 4 feet long .how many feet tall is the tree?

    asked by diamond
  189. Algebra 2

    If a rock is thrown upward from a height of 100 ft, with an initial velocity of 32ft/sec, solve for the time that it takes for it to hit the fround (when h=0) Round your answer to 2 decimals

    asked by Billy
  190. geometry

    if you know the area of a parrallelogram is 45.0 square feet and the base is 10.o feet, how can you find the height? Explain your method and then solve the question.

    asked by Danny Boo hoo
  191. Econ/stats

    The following data represent the number of flash drives sold per day at a local computer shop and their prices. Price (x) Units Sold (y) $34 3 36 4 32 6 35 5 30 9 38 2 40 1 a. Develop a least-squares regression line and explain what the slope of the line

    asked by Ruth
  192. Intermediate Algebra

    The magnitude of an earthquake on the Richter scale is given by the formula R=log I, where I is the number of times more intense the quake is than the smallest measurable activity. How many times more intense i an earthquake having a richter scale number

    asked by Sarahh
  193. chemistry

    Explain why Na2CO3 (stop solution) inhibits -galactosidase activity.

    asked by tulasi
  194. MATH

    A rectangle pen for a pet is 5 feet longer than it is wide. Give possible values for the width W of the pen if its area must be between 266 and 750 square feet, inclusively. The width of the pen from the smaller value of the width is how many feet to the

    asked by ANGEL
  195. biology

    Initially, how do skeletal muscles (the type of muscle attached to bones) make ATP? write the reaction for this procss (Crp +ADP => Cr + ATP) as a 'coupled' reaction, identifying the exergonic and endergonic reactions.

    asked by livleen
  196. Life Orientation

    Critically discuss 8 ways in which the environmental problem impact on the community or any other community in South Africa.

    asked by Nicola
  197. Life Orientation

    Describe the lifestyle disease cancer

    asked by Nicola
  198. Life Orientation

    Explain 5 factors that can contribute to cancer

    asked by Nicola
  199. Life Orientation

    Write a conclusion in which you explain in one paragraph what you have learn in doing this assignment on cancer and how it has changed the way in which you will view lifestyle diseases in future

    asked by Nicola
  200. Statistics

    When fifteen vehicles were observed at random for their speeds (in M.P.H.) on a freeway, the following data were obtained. 61 53 57 55 62 58 60 54 62 60 59 66 55 54 63 Suppose that from past experience it may be assumed that vehicle speed is normally

    asked by Jennifer
  201. World War 1

    In the mind of germany, what could have been some possible peace proposals so world war 1 would not have occured?

    asked by Stephanie
  202. Life orientation

    5 way in whch the human or enviromental problem impact on the community

    asked by Anonymous
  203. Economics

    How is the Barter system of exchange some what arbitrary?

    asked by Labz
  204. life orientation

    a clear explanation of how your choosen topic is a human factor that may cause ill health.

    asked by mellonny
  205. Probability and Statistics 2

    Bad Wheels Tire Company is interested in estimating the proportion of defective tires that it produces. The company tested a sample of 500 tires and found 16 to be defective. Find a 99% upper bound confidence interval for the true proportion of defective

    asked by Kim
  206. Algebra

    The formula for the volume of a cylinder is: V=πr^2*h If the volume is 432 cubic inches and the height is 8 inches, solve for the length of the radius.

    asked by Nancy
  207. geometry

    Write an equation for each circle if the coordiantes of the center and length of the radius are a. center(-1,-5) radius = 2 units b. center(0,3) radius = 7 units c. center(-9,7) radius = 1/2 units

    asked by lindsay
  208. MATH

    The cumulative number of car accidents from 2000 to 2010 can be modeled by the quadratic expression, C=-42x^2+924x+14,112, where x=1 corresponds to 2001, and so on until x=11 corresponds to 2010. Find the number of cumulative car accidents in 2003. Use the

    asked by ANGEL
  209. MATH

    If C dollars are deposited in an account paying r percent annual interest, the amount after x years is A+C(1+r)*. Approximate the amount in the account after x years, when C=$100.00, r=19%, and x-15 years.

    asked by ANGEL
  210. math

    there are 122 houses,how many times does the digit 2 appear on the letterboxes?

    asked by don
  211. algebra

    Y=3X^2+9X-1 what are the x and y intercepts? Please!

    asked by Anonymous
  212. spanish

    ¿Cuál frase es correcta? El hijo del maestro, quien estuvo en mi clase, es muy inteligente. El hijo del maestro, a quien estuvo en mi clase, es muy inteligente.

    asked by david
  213. math

    there are 3 arrays for 4, how many arrays can be drawn for each prime numbers

    asked by don
  214. History-world war 1

    In the mind of germany, what could have been some possible peace proposals so world war 1 would not have occured?

    asked by Stephanie
  215. MATH

    The cumulative number of car accidents from 2000 to 2010 can be modeled by the quadratic expression, C=-42x^2+924x+14,112, where x=1 corresponds to 2001, and so on until x=11 corresponds to 2010. Find the number of cumulative car accidents in 2003. Use the

    asked by ANGEL
  216. Economics

    In 1000 BC, the Chinese people used Cowry shells as a method of currency. Why is this significant?

    asked by Labz
  217. physics

    Consider a wave that travels a distance of 3 meters in 1 second with a frequency of 2 hertz. What is its amplitude? A) 4 meters.B) 2 meters.C) Not enough information is given.D) 3 meters.E) 1 meter.

    asked by Kristie
  218. Probability and Statistics

    The major would like to estimate the mean number of automobile crashes per day at the intersection of 2 highways. A random sample of 40 days worth of data had a mean of 4.3 crashes and a standard deviation of 0.9. How large of a sample would be needed in

    asked by Kim
  219. calculus

    Find the volume of the solid formed by rotating the region enclosed by y=e2x+1y=0x=0x=09 about the y-axis.

    asked by carlton
  220. calculus

    Find the volume of the solid obtained by rotating the region bounded by y=4x^2,x=1,y=0 about the x-axis.

    asked by carlton
  221. Pre-calc

    Heres the equation y^2 -4x^2 +8x=20 For the center i got (-1,0) For the vertices i got (-1,4), (-1,-4), (1,0), (-3,0) And how do you find the foci?

    asked by Maya
  222. math

    each bead has a value according to its color how do you finnd the value of the beads

    asked by dorothy
  223. physics

    Frequency and period are related, in that they are which of the following?A) inverses of each other.B) None of these.C) both on the same wavelength.D) directly proportional to each other.E) two expressions for much the same thing.

    asked by Kristie
  224. algebra

    laurie can bike to work in 3/4 hour.when she takes the bus, the trip takes 1/4 hour. if the bus travels 20 mph faster than laurie rides her bike, how many miles is it to her workplace?

    asked by Anonymous
  225. Math

    a cylinder has a radius of r and a height of h. A rectangular box has a length of r, a width of h and height of h. Their combined volume is V=πr^2h+h^2r If their combined volume is 600 cubic inches and h is 5 inches, solve for the radius(r).

    asked by Nancy
  226. social studies

    Why is the Rosetta Stone important..?

    asked by T
  227. physics

    A sonic boom is produced by an aircraft when it does which of the following? A) flies faster than sound continuously.B) None of these.C) All of these.D) first exceeds the speed of sound and breaks the sound barrier.E) pulls out of a subsonic dive.

    asked by Kristie
  228. Probability and Statistics

    A marine biologist has determined that the weight of a full weight of 2000pounds and a standard deviation of 500 pounds. Determine the probability that the average weight of the next five sharks captured will be less than 2100lbs.

    asked by Kim
  229. owens cc

    what is the realationship between promotion and sale promotion

    asked by lana Harvey
  230. python programming

    Explain in python programming (x^n-1)/(x-1) = x^(n-1)+x^(n-2)+...+x+1

    asked by Kim
  231. statistics

    do you want to own your won candy store? start up costs (units in 1,000) for a random sample of candy stores are: (95, 173, 129, 95, 75, 94, 116, 100, 85) Use an 80% confidence interval to test the null hypothesis that the mean start up cost is 118.

    asked by emily
  232. Linear Algebra - Question

    I have this number that I just wanted to be sure how to do. They give me a Parallelepiped with corners lettered from A to H. Then the question is: In a certain orthonormal reference, the coordinates of points A, B, D and E are respectively A(0,0,2)

    asked by Jer
  233. ALGEBRA

    Convert the following credit card rate to the APR. Oregon, 1 3/4% per month

    asked by Mike
  234. Chemistry

    What is the pH of the solution created by combining 12.30 mL of the 0.10 M NaOH(aq) with 8.00 mL of the 0.10 M HCl(aq)? with 8.00 mL of the 0.10 M HC2H3O2(aq)? mL NaOH:12.30 pH w/ HCl _________ pH w/ HC2H3O2 _________ What are the pH values if you take

    asked by HELP!!
  235. life orientation

    Describe the environmental problem flooding

    asked by Patience
  236. Chemistry

    Will 1-propanol and 1-butanol form an ideal solution?

    asked by Sinmei
  237. life orientation

    five ways in which human or environmental problems imapacts on community.

    asked by lesego
  238. ALGEBRA

    Suppose an insurance agent offers you a policy that will provide you with a yearly income of $290,000 in 25 years. What is the comparable annual salary today, assuming an inflation rate of 4%?. (Round your answer to the nearest cent.)

    asked by Mike
  239. biology

    how does the REM help create a sleep signal sent from the pons in the brain that helps to stop motor neurons in the spine when a person sleeps. Please help me! I am looking for detailed information right down to the certain proteins and such! I have

    asked by Matt
  240. life orientation

    Identify and describe one environmental problem that causes ill health,accidents,crises and disasters within your community or any other community within South Africa or globally?

    asked by tumi
  241. ALGEBRA

    Calculate the monthly finance charge for the following credit card transaction. Assume that it takes 10 days for a payment to be received and recorded and that the month is 30 days long. (Round your answer to the nearest cent.) $300 balance, 18% rate, $250

    asked by Mike
  242. statistics

    if the null hypothesis is that the mean is 3218, the alternative hypothesis is that the mean > 3228, and the sample mean is x= 3342, the sample standard deviation is s=287, the sample size is n= 42, and α= 0.01 a. calculate the z test statistic. b. what

    asked by emily
  243. projectiles

    two children ride bicycle towards each other with instant velocity of 20m/s and 10m/s. Each child releases a ball 6m above the ground with forward horizontal velocity of 40m/s relative to the bicycle. if the two balls collide in above the ground. what was

    asked by ridhi
  244. ALGEBRA

    If $835 is invested in an account that earns annual interest of 4.5%, compounded semiannually, what will the account balance be after 13 years? (Round your answer to the nearest cent.)

    asked by Mike
  245. Life orientation

    How does water ppllution cause ill health,accidents,crises,and disaster within our community or globally

    asked by Khululekile
  246. math

    there are 122 houses eacg has number on letter box ,how many times does the digit 2 appear on the letter boxes?

    asked by chantelle
  247. math

    how t express 3X3X3X8 in index notation

    asked by linda
  248. Discrete Mathematics (computer science)

    Find a formula for the nth term of the recurrence K(n) = 13.5K(n – 1) – 2.7 with K(0) = 5.

    asked by Aydin
  249. Life orientation

    list five ways in which the human or environmental problem impacts on the community.

    asked by Talakgale Lucas
  250. ALGEBRA

    If $695 is invested in an account that earns 21.75%, compounded annually, what will the account balance be after 15 years? (Round your answer to the nearest cent.)

    asked by Mike
  251. physics

    Rank the speed of sound through the following from greatest to least:A. HeliumB. Benzene C. Mercury

    asked by Kristie
  252. physics

    A transparent cube with index of refraction n = 1.6 and side length a = 4.0 cm is free to rotate about an axis passing through its center. A laser beam is aimed at the cube. After passing through the cube the beam hits a screen on the other side forming a

    asked by Rams
  253. maath

    there are 3 arrays for 4.how many arrays can be drawn for each prime numbers

    asked by don
  254. Life orientation

    In 10-15 line critically descuss five ways in which the human or inveronment problem impect on south africa

    asked by Mbulaheni lufuno
  255. Life orientation

    Describe the life styele cancer and explain factors that contribute to the cancer

    asked by Lindy
  256. life orientation

    critically discuss 8ways in which the environmental problem impacts on your community within south africa or globally.(16)

    asked by tumi
  257. life orientation

    suggest 5 recommendation on how to adress the environmental problem that you have identified in the previous question

    asked by tumi
  258. British Literature

    John Ruskin illustrates a direct correlation between the decline in morality and the pollution visible in his world in “The Storm Cloud of the Nineteenth Century.” Illustrate this principle in action by utilizing between two and four of the texts we

    asked by Chelsea
  259. Calculus 3

    find the curvature of r(t) = at the point (1,0,0)

    asked by MAXIUM
  260. chemistry

    How can you prevent or stop eutrophication

    asked by precious
  261. Algebra/still clueless

    The length of a triangle is twice the width. The area is 2yd^2. Please, find length and width and simplify. Should I convert the yards? :-)

    asked by ShelbyA
  262. Geography Help??

    show how society and family life compare and contrast in the Pacific Rim? I don't need an answer, just an explanation please. I don't know what that means..

    asked by Lauren
  263. Life Direction

    three parts of Life Direction

    asked by Anonymous
  264. math

    Given A = {5, 6, 7}, B = {3, 4, 5, 6}, and C = { 4, 5, 6, 7}. Evaluate each set A ¿ B b) A U C c) B U C d) (A U B) ¿ C e) A U (B U C) f) (A ¿ B) ¿ C g) (A ¿ B) U C

    asked by seeq
  265. math

    Find the equation for the surface formed by rotating (x = 3*cos(y)) about the y axis. Your answer must not contain radical symbols (square root signs).

    asked by hamlet
  266. science

    how can concentration of Cl- in mixture of two chlorides be calculated given concentration of the chlorides

    asked by thabo mokgole
  267. Chemistry

    Calculate the concentration of H+(aq) and the concentration of OH-(aq) for the following solution with the following pH at 298K showing all your working. pH = 3.20

    asked by JJ
  268. Life orientation

    Identify and describe one environmental problem that causes ill health,accidents,crises and disasters within your community or any other community within south Africa or globally

    asked by L.P Mhlanga
  269. geometry

    What is the formular for the exterior angle of a regular polygon

    asked by Salawu
  270. ALGEBRA. PLEASE HELP ME.

    Point N is on hypotenuse BC of triangle ABC such than angle CAN is 45 degrees. If AC=8 and AB=6, find AN.

    asked by My Name Is Bob
  271. Physics

    Philadelphia Flyers player Mike Richards stands on the frictionless ice next to the goal. Neither Mike nor the goal are anchored to the ice. Frustrated after a recent playoff loss, 102.5kg Mike suddenly pushes on the goal, sending it across the ice a

    asked by Sarah
  272. Physics

    In an unusual return to space, Astronaut Sally Ride is conducting repair work on the Hubble Space telescope. She throws a hammer of mass 500.0g forward at 20.0m/s. The astronaut, mass 80.0kg, recoils in the opposite direction. What is Sally's recoil

    asked by Sarah
  273. physics

    Frequency and period are related, in that they are which of the following?A) inverses of each other.B) None of these.C) both on the same wavelength.D) directly proportional to each other.E) two expressions for much the same thing.

    asked by Kristie
  274. MATH

    A wheel 5.00 ft in diameter rolls up a 15.0° incline. How far above the base of the incline is the top of the wheel after the wheel has completed one revolution

    asked by Anonymous
  275. Physics

    The mass of a rocket car plus fuel is 2,000kg. The rocket car starts from rest. The engine expels fuel(in the form of exhaust) over a period of 8 seconds. The exhaust has a velocity of 1,000m/s due west, and the velocity of the rocket car after 8 seconds

    asked by Sarah
  276. economics

    Give a numerical example to show that a monopolist's marginal revenue can be upward-sloping over part of its range. Hint: The price on the demand curve is the producer's average revenue

    asked by dee dee
  277. life orientation

    explain 5 factors that contribute to the substance abuse

    asked by karabo
  278. economics

    find the uniform price if there is two customers: Type A who will only pay 10.00 dollars for a single unit of the good, and Type B who will only pay 8.00 dollars for a single unit of goods. There is 100 customers of Type A and 50 of the customers of Type

    asked by cupcake
  279. physics

    Beats in sound are the result of which of the follwing wave? A) resonance.B) refraction.C) reflections.D) amplitude changes.E) interference

    asked by Kristie
  280. Math

    Solve and please explain how you arrived at your ans: square of 3x-1=2

    asked by Kadesha
  281. algebra

    Write an equation of the hyperbola with foci (0, ) and (0, 2) and vertices of (0, ) and (0, 1).

    asked by david
  282. Homework

    The formula for the volume of a cylinder is: V=πr^2*h If the volume is 432 cubic inches and the height is 8 inches, solve for the length of the radius. Round answer to 2 decimals.

    asked by Kelsey
  283. Cultural

    Dependency theory refers to what?

    asked by Kim
  284. Cultural Anthropology

    what is Factory industrialism?

    asked by Kim
  285. Math

    Solve for x: x^2 -2x-4=0

    asked by Devon
  286. math

    the probability of havingtype O blood is 1/2 and the probablity if having type A blood is 1/4. what is the probablity of a person having either typr O blood or type A blood ?

    asked by Anonymous
  287. statistics

    A sociologist is studying marriage customs in a rural community in Denmark to determine the age of the woman at the time of her first marriage. the sample standard deviation of these ages was 2.3 years. The sociologist wants to estimate the population mean

    asked by Anonymous
  288. life orientation

    Ways in which the human or environmenta l problem impact on the community

    asked by vicky
  289. Chemistry

    0.200 moles of NaF are added to 1L 2.0 molar HF. What is the pH? a) 2.14 b) 6.70 c) 10.80 d) 3.00 e) 7.00

    asked by Zac
  290. math

    A geometric series with the first term 7 converges to 70. What does the common ratio equal? What does the second partial sum equal?

    asked by Jim
  291. English

    What effect do drugs, dangerous weapons and bullying have on schooling and education?

    asked by Anelisa
  292. statistics

    an auditor wishes to test the assumption that the mean value of all accounts receivable in a given firm is $260.00. She will reject this claim on ly if it is clearly contradicted by the sample mean. the sample deviation of 36 accounts is $43, the sample

    asked by Anonymous
  293. Maths and science

    How drug addiction is a human factor that causes ill health, accidents crises or disasters

    asked by Themba N
  294. English

    What effect do drugs,dangerous weapons and bullying have on schooling and education

    asked by Mongikazi
  295. Life Orientation

    How drug addiction is a human factor that causes ill health, accidents crises or disasters

    asked by Themba N
  296. English

    Bullying is comprised of direct behaviors such as teasing,taunting,threatening and stealing

    asked by Anelisa
  297. Chemistry

    What is the [CrO4] in a 2.5 L saturated solution of lead (II) chromate to which 0.05 mol Pb(NO3)2 is added?

    asked by Josh
  298. statistics

    The mean length of a work week for the population of workers was reported to be 39.2 hours. Suppose that we would like to take a current sample of workers to see whether the mean length of a work week has changed from the previously reported 39.2 hours. a.

    asked by frances
  299. Computer science

    A. Given a = 5, b = 1, x = 10, and y = 5, create a program that outputs the result of the formula f = (a b)(x y) using a single printf() function. B. Create a program that uses the same formula above to output the result; this time, however, prompt the

    asked by Bettie
  300. Algebra

    x2 - 5x + 5 = 0

    asked by Tanya
  301. GED-Word Problems

    Ms. Niemeyer is taking the train 3,240 miles to Oregon. She will travel 1/8 the distance the first day and 1/6 the distance the second day. How far will she have left to go after two days?

    asked by kayla
  302. Life Orientation

    Identify and describe one environmental problem that causes ill health, accidents, crises and disasters within our community or any other community in South Africa

    asked by Nicola