1. Please tell me if i did this correct

    Given the following frequency distribution, find the mean, variance, and standard deviation. Please show all of your work. Errors Frequency 51-53 9 54-56 19 57-59 16 60-62 24 63-65 25 This is what I got: Mean = 59.19 Variance = 1.43 Standard Deviation =

    asked by Jennifer on October 16, 2011
  2. algebra

    when the lenght of each side of a square is increased by 7in., its area is increased by 189in.^2. find the lenght of the side of the original square.

    asked by shekyra nelvis on July 27, 2016
  3. math

    A ladder is resting against a wall. the foot of the ladder is 8 feet from the wall, and the top of the ladder is 19 feet from the ground. FIND THE slope of the ladder

    asked by rachel on October 16, 2011
  4. Maths

    There are 12 balls in a bag, where n of them are white balls. If 2 balls are chosen at random from the bag without replacement, the probability of choosing at least 1 white balls is 19/33. Find n.

    asked by Mily on April 30, 2014
  5. Calculus

    Find the sum of the squared errors for the linear model f(x) and the quadratic model g(x) using the given points. f(x) = −0.7x+3, g(x)=0.06x^2−0.6x+2 (−3, 5), (−1, 3), (1, 2), (3, 1) linear model-? quadratic model -?

    asked by Calculus Help on December 8, 2015
  6. Calculus

    Find the sum of the squared errors for the linear model f(x) and the quadratic model g(x) using the given points. f(x) = 2.0x − 3, g(x) = 0.09x^2 + 1.6x − 3 (−1, −4), (1, −2), (2, 0), (4, 6), (6, 9) linear model-? quadratic model- ?

    asked by Calculus Help on December 8, 2015
  7. statistics

    The average marks of 30 students in mathematics is 69. If the class leader’s mark is included then the average becomes 70. Find the class leader’s mark.

    asked by Sharon on July 25, 2011
  8. Math

    Find the solution. 1. sqrt2 sin x + 1 = 0 My ans: x = 5pi/4 + 2npi and 7pi/4 + 2npi 2. sec x - 2 = 0 My ans: x = pi/3 + 2npi and 5pi/3 + 2npi

    asked by Anonymous on October 25, 2015
  9. calculus

    Suppose f of x equals 3 times x minus k when x is less than 5 and equals 1 plus k times x when x is greater than or equal to 5.Find the value of k that would make f continuous at x = 5. -3 0 7/3 no such k will make f continuous

    asked by ashley on February 5, 2014
  10. math

    Given the four rational numbers below, find the greatest difference and the greatest product using two of the numbers for each operation. 2 1/3,1.5, -1.25, -3 1/4 Difference= -0.95 is what I got for the first answer. Product= 4.0925 is what I got for the

    asked by Wossum on September 3, 2016
  11. math

    A drawer contains 4 red socks and 4 blue socks. Find the least number of socks that must be drawn from the drawer to be assured of having a pair of red socks

    asked by Anonymous on August 25, 2014
  12. GRAPHING HELP

    Find the coordinates of the vertex and the equation of the axis of symmetry of the parabola given by the equation. x = − 1/3^2+4 vertex (x, y) = axis of symmetry Sketch the graph.

    asked by KMILLhelp on April 21, 2014
  13. Calculus

    A rectangle is to be inscribed under the curve y=4cos(.5x). The rectangle is to be inscribed from x=0 to x=pi. Find the dimensions that give max area and what is the max area.

    asked by Will on February 1, 2018
  14. English

    Another question regarding works cited in MLA style. I would like to put 2 photos in my work How do I do that? I cannot find anywhere how to put photos in MLA style. Thank you

    asked by tee on December 3, 2010
  15. Algebra

    Find the number of integer quadruples (a,b,c,d) with 0\leq a,b,c,d \leq 100, such that a and b are the roots of the quadratic equation x^2-cx+d=0, while c and d are the roots of the quadratic equation x^2-ax+b

    asked by John on March 4, 2013
  16. Business mathematics

    A man sold his radio-set at a loss of 20%.If he would have sold it for ₹90 more, his loss would have been only 10%. Find cost price of radio-set.

    asked by Ansh on August 1, 2016
  17. Math

    Help Find the area between the x -axis and the graph y = 2 x 3 from x = 1 to x = 5. 54 square units 312 square units 122 square units 212 square units

    asked by Bri on April 4, 2019
  18. Math

    How do you find the length of the base of a triangle? My math problem is: The area of a triangle is 33.6 inches. If the height is 4 inches what is the length of the base? thank you

    asked by John on April 25, 2013
  19. ALG

    Find the coordinates of the vertex and the equation of the axis of symmetry of the parabola with the given equation. y = 8x^2 + 48x − 3 vertex (x, y) = axis of symmetry ________

    asked by KELLY on April 21, 2014
  20. Algebra

    A rectangular pool has a perimeter of 142 feet. The length is 25 feet longer than the width. Find the length and width of the pool.

    asked by Emily on March 5, 2015
  21. maths

     A boat goes 12 km upstream and 40 km downstream in 8 hours. It can go 16 km upstream and 32 km downstream is the same time. Find the speed of the boat in still water and the speed of the stream.

    asked by raghav on June 4, 2014
  22. math

    Does anyone know how to find the rate with ONLY principal and time? (no interest) Refer to this: Investment A: Rate as 'R,' principal as $8000, time as '4 years,' and interest as 'SI'

    asked by Anonymous on November 17, 2017
  23. Math

    A tree casts a shadow of 12 meters when a 5meter post nearby casts a shadow of 6 meters find the height of the tree.

    asked by mary jean on August 26, 2015
  24. Statistics

    Suppose that 92% of all SFSU students own a cell phone. Find the probability that 7 out of 10 random selected SFSU students own a cell phone

    asked by Mitch on February 24, 2011
  25. Math

    Let f(x)=x+1‾‾‾‾‾√ and g(x)=3x−5. Find f∘g and g∘f, and their respective domains. 1. (f∘g)(x)= 2. What is the domain of f∘g ? Answer (in interval notation): 3. (g∘f)(x)= 4. What is the domain of g∘f ? Answer (in interval

    asked by tish on March 1, 2016
  26. CAMBRIDGE

    Points P and Q are both in the line segment AB and on the same side of its midpoint. P divides AB in the ratio 2 : 3, and Q divides AB in the ratio 3 : 4. If PQ = 2, then find the length of the line segment AB.

    asked by YASHIKA on February 21, 2017
  27. math

    A number consists of two digits whose sum is 9. if three times the number is equal to eight times the number formed by interchanging the digits. find the number

    asked by reshman on March 25, 2016
  28. calculus

    Find the area of the region lying inside the polar curve r = 2(1 − cos theta) and outside the polar curve r + 4 cos(theta)= 0.

    asked by Bob on October 13, 2010
  29. Algebra2

    Find the values of the inverse function in radians. 1. sin^-1(0.65)? answer choices: a. 0.71+2pi n and -0.71+2pi n b. 0.71+2pi n and -3.85+2pi n c. 0.86+2pi n and -0.86 +2pi n d. -0.61+2pi n and 2.54+2pi n My answer is B

    asked by Steve on May 2, 2017
  30. calculus

    Find the area of the region lying inside the polar curve r = 2(1 − cos theta) and outside the polar curve r + 4 cos(theta)= 0.

    asked by Bob on October 13, 2010
  31. Algebra

    the smaller of two numbers is 18 less than the larger number. If 5 timnes the larger number esxceeds four times the smaller by 100. Find the numbers.

    asked by Kalee on September 10, 2015
  32. math

    Enter your answer and show all the steps that you use to solve this problem in the space provided. A party store offers small balloons and large balloons. You can choose from pink, blue, green, and yellow balloons. You can choose from silver, gold, and

    asked by niki on February 20, 2019
  33. physics

    An athlete whose mass is 94.0 is performing weight-lifting exercises. Starting from the rest position, he lifts, with constant acceleration, a barbell that weighs 600 . He lifts the barbell a distance of 0.50 in a time of 2.2 . Part A Use Newton's laws to

    asked by Anonymous on November 9, 2012
  34. healthh

    Keep a five day Journal about noticing people around you of all ages at home, school, work, or in TV or movies as to body size and weight and what your inner thoughts and reaction to them are. Do you find yourself making judgments or having

    asked by Nani on August 10, 2015
  35. chemistry

    Ibuprofen, the active ingredient in advil, is made up of carbon, hydrogen, and oxygen atoms. When a sample of ibuprofen, weighing 5.000 g, burns in oxygen, 13.86 g of CO2 and 3.926 g of water are obtained. What is the simplest formula of ibuprofen? My

    asked by Chris on October 17, 2006
  36. world history

    During the fourteenth century, Japanese women of aristocratic rank A. saw marriage customs change to their detriment. B. were transformed because of their ability to hold their own property separately from their husbands. C. became freer due to the

    asked by bob on May 28, 2011
  37. College/education class

    What are the most effective and ineffective uses of objective assessments for instructors and learners? What is your view on the relative advantages and disadvantages of using objective tests? How might you incorporate objective assessments in your

    asked by Cathy on April 21, 2015
  38. Philosophy

    What is the history of continental philosophy in reaction to Hegelian idealism? I need some help answering this question. I cannot find any information on this. Any help would be greatly appriciated. Thanks. Thank you for using the Jiskha Homework Help

    asked by Marie on May 18, 2007
  39. Physics

    In a cathode ray tube, electrons initially at rest are accelerated by a uniform electric field of magnitude 4.71 x 105 N/C during the first 5.49 cm of the tube's length; then they move at essentially constant velocity another 47.9 cm before hitting the

    asked by Ashley on January 24, 2012
  40. math

    Danny and Erica are 3km apart on a straight road. They set out to walk uniformly at the same time. If they walk in an opposite direction, they will meet after 24 minutes. If they walk in the same direction, Danny will catch up to Erica after 6 hours. Find

    asked by anonymous on April 1, 2018
  41. Math

    The density if a sample is 5.8g/cm^3. the sample fills a cylindrical container whose hieght is 10.2 cm and whose radius is 4.3cm Find the mass of the sample. Mason, I'm sure the reason you haven't received any responses yet is that you haven't indicated

    asked by Mason on July 23, 2007
  42. Math

    A consumer buys n light bulbs, each of which has a lifetime that has a mean of 800 hours, a standard deviation of 100 hours, and a normal distribution. A light bulb is replaced by another as soon as it burns out. Assuming independence of the lifetimes,

    asked by Alex on April 27, 2011
  43. Physics HELp

    In Figure 8-34, a 1.2 kg block is held at rest against a spring with a force constant k = 785 N/m. Initially, the spring is compressed a distance d. When the block is released, it slides across a surface that is frictionless, except for a rough patch of

    asked by Kelly on March 31, 2010
  44. physics

    A 15-kg block is on a frictionless ramp that is inclined at 20° above the horizontal. It is connected by a very light string over an ideal pulley at the top edge of the ramp to a hanging 19-kg block, as shown in the figure. The string pulls on the 15-kg

    asked by Mazdaly on April 15, 2015
  45. Math

    Note: Enter your answer and show all the steps that you use to solve this problem in the space provided. The diameter of a tire is 2.5 ft. Use this measurement to answer parts a and b. Show all work to receive full credit. Find the circumference of the

    asked by Me on February 8, 2019
  46. Physics

    In Figure 8-34, a 1.2 kg block is held at rest against a spring with a force constant k = 785 N/m. Initially, the spring is compressed a distance d. When the block is released, it slides across a surface that is frictionless, except for a rough patch of

    asked by Kelly on March 30, 2010
  47. Physics

    In a cathode ray tube, electrons initially at rest are accelerated by a uniform electric field of magnitude 4.71 x 105 N/C during the first 5.49 cm of the tube's length; then they move at essentially constant velocity another 47.9 cm before hitting the

    asked by Megan on January 25, 2012
  48. Pre-Calc 20

    **EDIT** A rectangle has a diagonal of 18cm. The diagonal creates a 60 degree angle at the base of the triangle. Write an exact expression for the base and the height of the triangle. My teacher wants the base and height answered in roots so do you think

    asked by Julie on September 23, 2016
  49. calculus

    At a summer campfire, the radius of a marshmallow on a stick expands at the rate of \ {r ' (t)} = \frac{2.4 }{3 t + 6} mm/s where t is the time of heating in seconds. Initially the radius was 3.8 mm. Find the radius after 16 seconds using the following

    asked by Marcus on March 8, 2014
  50. Chemistry

    A person falls in water at 0 C. After 30 min in the water, he/she suffers from hypothermia, as their body temp drops to 30 C. Since we are water.... we assume the heat capacity is 4.18 J/g/C. 180 Kcal of energy is required to raise the persons temp to 40

    asked by Dave on June 10, 2009
  51. Chemistry Lab

    A 15.00 mL sample of a weak acid with Ka = 3.52x10-4, was titrated with 0.475 M KOH. The equivalence point was reached after addition of 19.5 mL of KOH with the phenolphthalein indicator. Determine the molar concentration of the original acid solution,

    asked by Erin Lee on October 30, 2012
  52. English 11

    In English we are reading the crucible and we have to find modern day witch hunt examples.witch hunt being people who are guilty in the opinion of public opinion, but is actually innocent in the court of law. Some examples he and some others gave were

    asked by Elaina on October 18, 2012
  53. grammar

    Could you correct me my mistakes. Please • What are you most passionate about? One of my greatest passion is helping others. I like helping people find solutions that meet their specific needs. 7.How do you typically spend your leisure time? In my

    asked by Eliz on October 10, 2017
  54. Math

    An underground tank full of water has the shape of a circular cone with a base radius 5m and height 4m at the top. The top of the tankl is 2m below the ground-surface and is connected to the surface by a spout. Find the work required to empty the tank by

    asked by Breona on November 17, 2010
  55. Physics

    An airplane of mass 1.3 104 kg is moving at 64 m/s. The pilot then revs up the engine so that the forward thrust by the air around the propeller becomes 7.2 104 N. If the force exerted by air resistance on the body of the airplane has a magnitude of 4.0

    asked by Jane on December 13, 2010
  56. problem solving

    Given that • The distance from the earth to the sun is 1.5*10^11m, and • The mass of the sun is 1.9 *10^30 kg , 1. use Kepler’s Law of Periods to find the period of the earth’s orbit, recorded in seconds:; 2. show how to express your answer in

    asked by lynn on November 4, 2008
  57. Physics

    A 95 gram piece of metal is heated to 98°C and placed into 200mL of water insulated at 20°C. If the equilibrium temperature is 27.20, find: The heat gained by the water. calories: _________ The specific heat of the metal. cal/(g°C): ________ Hint: 1 mL

    asked by Anna on July 9, 2016
  58. physics

    A 14.7 kg crate is pulled up a rough incline with an initial speed of 1.5 m/s. The pulling force is 124.0 N parallel to the incline, which makes an angle of 11.0 ◦ with the horizontal. The coefficient of kinetic friction is 0.31 and the crate is pulled a

    asked by Anonymous on November 9, 2012
  59. Pre Calc

    I am familiar with this type of problem but can't seem to get the right answer. Use the given zero to find the remaining zeros of each function f(x)=x^4-9x^3+7x^2-91x-348,zero 5-2i I normally would use synthetic division with the root 5-2i bringing it down

    asked by Zach on November 13, 2009
  60. Science

    A rod of length L=1.80m is mounted to a wheel (solid cylinder) of radius R=8.00cm. A massless rope is wound on the wheel, and then connects to a block of mass m=0.250kg. The mass is released from rest and allowed to fall. 1. Find the tension in the rope.

    asked by Leila on June 16, 2014
  61. Physics

    In Figure 8-34, a 1.2 kg block is held at rest against a spring with a force constant k = 695 N/m. Initially, the spring is compressed a distance d. When the block is released, it slides across a surface that is frictionless, except for a rough patch of

    asked by Holy Grail on March 31, 2010
  62. statistics

    Suppose that about 20% of those called will find an excuse (work, poor health, travel out of town, etc.) to avoid jury duty. If 14 people are called for jury duty, what is the probability that all 14 will be available to serve on the jury? Round your

    asked by karen on August 20, 2010
  63. Physics

    "A person is playing a small flute 10.75 cm long, open at one end and closed at the other, near a taut string having a fundamental frequency of 600.0 Hz. If the speed of sound is 344.0 m / s, for which harmonics of the flute will the string resonate? In

    asked by Kyle on June 4, 2012
  64. Chemistry! urgent

    what volume of gas at 40°C and 1.50 atm is necessary to react with 300 L of hydrogen gas measured at the same conditions? 2H2 (g) + O2 (g) --> 2H20 (g) 1.50 atm= 151.KPa How would I solve this? Because I can't use: PV = nRT I have pressure, temperature,

    asked by Sarah on January 10, 2018
  65. physcs

    A potter's wheel having a radius 0.55 m and a moment of inertia 11.6 kg·m2 is rotating freely at 55 rev/min. The potter can stop the wheel in 8.0 s by pressing a wet rag against the rim and exerting a radially inward force of 66 N. Find the effective

    asked by Kelsey on April 17, 2010
  66. Physics

    A pilot in a small plane encounters shifting winds. He flies 20.0 km at 30∘ north of east, then 50.0 km due north. From this point, he flies an additional distance in an unknown direction, only to find himself at a small airstrip that his map shows to be

    asked by Anwar on September 14, 2017
  67. Computer science

    3.We often come across the terminology like 6b-bit processor, 64-bit operating system and 64-bit system bus. Do you understand those terminologies? What exactly those numbers represent? Please find out the exact meaning of three terminologies above (give

    asked by Md Farhad Hossain on February 3, 2013
  68. English

    Let's survey your family members' TV viewing habits. 1. Find out TV programs your family like most. 2. Investigate how many hours they watch TV. 3. Each gathers the investigation result, and compares how different their family members' favorite TV

    asked by John on May 31, 2008
  69. Calculus

    A projectile is launched at an angle of 60 degrees to the horizontal from 6.5 ft above the ground at an initial speed of 150ft/sec. Assume the x-axis is horizontal, the positive y-axis is vertical (opposite g), the ground is horizontal, and only the

    asked by Z32 on March 9, 2011
  70. Physics

    In a cathode ray tube, electrons initially at rest are accelerated by a uniform electric field of magnitude 4.71 x 105 N/C during the first 5.49 cm of the tube's length; then they move at essentially constant velocity another 47.9 cm before hitting the

    asked by jason on January 26, 2012
  71. Politics

    I'm writing a speech, and it's about the topic "Private sector investment is preferable to public sector investment for Human Space Exploration" I'm on the con side for this argument, and one of my reasons was that public sector will spur cooperation,

    asked by Anna on September 18, 2011
  72. Physics question

    mass 0.3kg is moving on the ground at speed 4m/s towards ball B which is at rest on the ground and has mass of 0.8kg. When A collides with B the ball remains in contact for 0.2 sec after the collision B moves forward with a velocity of 1.8m/s find the

    asked by Amy on January 10, 2018
  73. English

    I need help bad, what exactly am I suppose to write about with this question. I just need to know what this question is asking. Here is the question: “Locate two books or internet sources on the career of Edgar Allen Poe. On the basis of information you

    asked by Anonymous on September 19, 2010
  74. physics

    A cyclist is on a rolling stationary trainer pedaling such that his wheels are traveling at 30 km/h. He has an unfortunate incident and ends up falling over 90° on his side onto a large patch of ice. Given the cyclist and bicycle have an 4.5 kg*m^2, find

    asked by joe on June 30, 2016
  75. Physics

    A centrifuge in a medical laboratory rotates at an angular speed of 3500 rpm (revolutions per minute). When switched off, it rotates 70.0 times before coming to rest. Find the constant angular acceleration of the centrifuge. (Assume the initial direction

    asked by Gina on October 14, 2010
  76. Algebra 1

    A finance company offers cheaper interest rates if you borrow a larger sum of money for shorter time period. A borrower is offered $7000 at 12% or $10080 at 10%. If the tome for the lager loan is 6 months less but the total interest is the total interest

    asked by Lola on November 9, 2010
  77. statistics

    sing the proper average, find the average number of grams of fat per ounce of meat or fish that a person would consume over a 5-day period if he ate these: 3 oz fried shrimp 3.33 g/oz of fat 3 oz veal cutlet 3.00 g/oz of fat 2 oz roast beef 2.5 g/oz of fat

    asked by roga on February 18, 2013
  78. algebra

    write an expression to represent each situation. then find the value of each expression to solve the problem. 1. on saturday, mrs. armor bought 7 pairs of socks for $3 each, and a sweater for her dog of $12. then she found a $5 bill on the sidewalk. over

    asked by anon on August 28, 2015
  79. Physics

    A pendulum string has a length l = 4.0 ft. When the pendulum ball is released at 90 degrees to the vertical, it will swing down. A nail is located distance d below the point of suspension of the pendulum. Show that d must be at least 0.6l if the ball is to

    asked by Nora on March 21, 2015
  80. Physic- help on direction (Not that good at Englis

    Galileo figured out the equation that describes the behavior of a pendulum. If you square both sides of the equation, you will find that the slope of the line is related to the acceleration due to gravity (g). Specifically, slope = 4PI^2/g. Use your data

    asked by Tara on January 12, 2015
  81. Calculus

    A rectangle is bounded by the x-axis and the semicircle y= ã(25-x^2). What length and width should the rectangle have so that the area is maximum? Place the semi-circle so it's center coincides with the origin. If you go a distance x to the right the

    asked by Tezuka on October 1, 2006
  82. physics

    A 16.0-m uniform ladder weighing 490 N rests against a frictionless wall. The ladder makes a 63.0° angle with the horizontal. (a) Find the horizontal and vertical forces the ground exerts on the base of the ladder when an 850-N firefighter has climbed

    asked by mee on January 16, 2011
  83. materials bahavior

    A specimen has an initial diameter of 200mm and a length of 700mm. At a stress of 40MPa and a temperature of 538oC the steady state strain rate is about 2×10−4% per hour. Find the primary creep elongation and the steady state creep elongation after 5000

    asked by lucas on December 7, 2015
  84. Algebra 2 ..........

    During a sale, a music store is selling all drum kits for 20% off. Preferred customers also receive an additional 15% off. 1. Write a composite function to represent the final cost of a kit that originally cost c dollars. 2. Find the cost of a drum kit

    asked by Anonymous on February 19, 2013
  85. Janine

    You order fifteen burritos to go from a Mexican restaurant, eight with hot peppers and seven without. However, the restaurant forgot to label them. If you pick five burritos at random, find the probability of the given event. (Round your answer to three

    asked by Janine on December 1, 2014
  86. calc 3

    The length script l, width w, and height h of a box change with time. At a certain instant the dimensions are script l = 7 m and w = h = 5 m, and script l and w are increasing at a rate of 6 m/s while h is decreasing at a rate of 4 m/s. At that instant

    asked by Becky on September 21, 2012
  87. Math

    A consumer buys n light bulbs, each of which has a lifetime that has a mean of 800 hours, a standard deviation of 100 hours, and a normal distribution. A light bulb is replaced by another as soon as it burns out. Assuming independence of the lifetimes,

    asked by Lo on April 27, 2011
  88. physics

    A baseball is thrown, leaving the baseball player’s hand 6.0 ft about the ground and at a 45 degree angle with respect to the horizon. The initial speed is 80 ft/s. Find the maximum height attained, the length of time the ball stays in the air, and the

    asked by mary on December 10, 2008
  89. physics

    a certain type of propeller blade can be modeled as a thin uniform bar 2.5 m long and of mass 24 kg that is free to rotate about a frictionless axle perpendicular to the bar at its midpoint. if a technician strikes this blade witha mallet 1.15 m fromthe

    asked by Anonymous on October 27, 2009
  90. Chemistry

    A certain Geiger counter is known to respond to only 1 of every 1000 radiation events from a sample. Calculate the activity of each radioactive source in curies, given the following data. 580 clicks in 104 s My text barely attempts to explain how to do

    asked by Trixie on April 16, 2010
  91. Art

    I'm trying to find out what the differences and similarities are between: Impressionism Neoclassicism and Abstract Expressionism Examples of these arts are: The Emperor Napoleon in His Study at the Tuileries by Jacques Louis David (Impressionism) The

    asked by Leah on April 10, 2010
  92. Science: Physics and Chemistry

    I was given a systems equation. Two masses are on a flat frictionless surface tied together. There is a pulley type thing and another mass is hanging over the edge of the table. It is attatched to the other 2 masses. It has no Fn, only Fg because it is

    asked by Marina on February 8, 2010
  93. English

    Team 1, come to the front, please. Who plays the part of the king? Who performs the part of the old man? Who is the movie director? Where is the prop amster in this team? Have you prepared for the props for this play? put them against the blackboard or

    asked by rfvv on November 24, 2017
  94. Physics

    A hanging wire made out of titanium with diameter 0.080 cm is initially 2.3 m long. When a 78 kg mass is hung from it, the wire stretches an amount 2.89 cm. A mole of titanium has a mass of 47.9 grams, and its density is 4.51 g/cm3. Based on these

    asked by Amelie on February 25, 2011
  95. Sampling Distribution Complete solutions and illus

    Sampling Distribution Complete solutions and illustrations are required. 1.The average annual salary for all U.S. teachers is $29,863. Assume that the distribution is normal and the standard deviation is $5,200. a.Find the probability that a randomly

    asked by Rhea on February 27, 2013
  96. sorry but more research help

    can you guys also give me websties on the process of committe investigations. i looked in goggle but they keep talking about ethics and all that. i swear, that before i ask for your help, i research for atleast 20 to half an hour on the internert to find

    asked by dolphino on November 17, 2006
  97. Chemistry. What equation do I use?

    A 20.29 g sample of impure MgCO3 is completely decomposed at 1000oC in previously evacuated 2.0 L reaction vessel. After the reaction was complete the solid residue had a mass of 15.9 g. Assume that only MgCO3 could produce gas CO2 what percent of original

    asked by Sarah on December 2, 2008
  98. Math

    Sarah has to go to her brother's baseball tournament that lasts for 4 days. She eats two-thirds of a hotdog at every game. He plays 2 games a day. Define your variables, write a function rule, find the domain and range, and tell whether the data is

    asked by Lynn on October 2, 2016
  99. Geoscience

    can you help me write out a geological time scale of an area located within stone mountain Georgia? I need a description of the area, how the rock transformed and was dated, picture of a map that has the longitude and latitude of the area picked, the

    asked by Robin on February 21, 2011
  100. math pre calc

    at the pittsburch zoo, children ride a train for 25 cents, adults pay $1 and seniors pay .75. on a given day, 1400 passengers paid a total of $740 for the rides. there were 250 more children riders than adults and senior riders combined.find the nu,ber of

    asked by JT on April 25, 2013

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