1. English/grammar

    Are the following statements correct. 1. There is/are normal DTRs noted on examination. 2. The prosthetic hardware was/were freed from the surrounding tissues and removed. Is this correct: 1. are 2. was

    asked by Cathy on November 10, 2014
  2. statistics

    Use of normal distribution to approximate the desired probability. Find the probability of getting at least 30 fives in 200 tosses of a fair 6 sided die.

    asked by Lori on October 9, 2010
  3. statistics

    Build a 95% confidence interval for the mean of the population from the given sample data. Assume that the population has a normal distribution. 16.4, 15.7, 16.2, 15.8 17.1 15.8, 15.9, 16.0, 16.4 15.0 *please help me solve this! I have no clue what I am

    asked by Sarah on April 30, 2014
  4. chemistry

    calculate the quantity of energgy required to heat 1.00 mol of aluminum from 25 degrees to its normal melting point of658 degrees

    asked by jules on April 12, 2011
  5. stats

    the distribution of IQscores forms a normal distribution with a mean of 100 and a standard deviation of 15. what is the proportion of the population that has an IQscore greater than 130?

    asked by Anonymous on April 12, 2011
  6. Vapor pressure of liquids

    benzaldehyde has a normal boiling point of 179 C and a critical point at 422C and 45.9 atm. estimate its vapor pressure at 139C.

    asked by Chem 2011 on January 25, 2011
  7. Science

    Why does the downhill-race bike look the way it does, what stuff does it have which normal bikes don't and what magnitude of force and dynamic loads effect the bike. please help

    asked by Bill Nye The Science Guy on March 3, 2013
  8. south al

    For a hypothetical normal distribution of test scores, approximately 95% fall between 38 and 62, 2.5% are below 38, and 2.5% are above 62. Given this information, (a) the mode=_____ and (b) the standard deviation=_____.

    asked by victor on March 31, 2013
  9. biology

    Colour blindness is a recessive disorder. If a colour blind male is crossed with a normal female, what are the possible genotypes and phenotypes of the offspring

    asked by Cathy on November 7, 2014
  10. Biology

    1. Why are cells from a blastula used to examine mitosis? 2. How fast do you think cells divide when an embryo is developing compared to the normal growth of an animal?

    asked by Mely on July 19, 2010
  11. math

    A normal clock loses 3 minutes per hr and another clock gains 5 min per hr. How many hours after from now, both the clocks will show the correct time simultaneously?

    asked by aman on January 7, 2016
  12. Chemistry

    Sorry,please ignore my earlier post. Light sensitive materials are sampled in a room with yellow lighting. How is it different from normal white light?

    asked by annie on September 14, 2010
  13. Stats

    A question on a test is answered correctly by 22% of the students find the probability that in the next 150 students there will be more than 40 correct answers use the normal distribution

    asked by Anonymous on February 11, 2014
  14. Chem.

    As a go through my study guide, I'm finding that I'm getting esters and normal stoic acids confused. How can you tell when a stoic acid is an ester and when its not? Or are they always the same thing? Thanks for explaining this.

    asked by Susanne on May 12, 2009
  15. statistics

    True or False If one score is randomly selected from a normal distribution with  = 100 and  = 20, the probability of obtaining a score between X = 80 and X = 120 is 0.3413.

    asked by Lyndyc on January 6, 2014
  16. Statistics

    The retail price of 12-pack soda can be characterized as having a normal distribution with a mean of 3 dollars and a standard deviation of .25. Below what price do you find 30 % of all 12 packs?

    asked by Christine on September 22, 2012
  17. statistics

    a. A random sample of 25 was drawn from a normal distribution with a standard deviation of 5. The sample mean is 80. Determine the 95% confidence interval estimate of the population mean.

    asked by Sally on August 16, 2011
  18. Physics, ray optics

    An astronomical telescope of magnifying power 7, consist of two thin lenses 40 cm apart in normal adjustment. Find the focal length of the lenses.

    asked by Bishmay on October 14, 2016
  19. chemistry

    a liquid has an enthalpy of vaporization of 30.8 kg.mol. at 273 K it has a vapor pressure of 102 mmHg. What is the normal boiling point of this liquid

    asked by ella on February 18, 2011
  20. statistics

    Use the normal dist to approx the desired prob. Find the prob of getting at most 30 fives in 200 tosses of a fair 6 sided die

    asked by Sandra on October 4, 2013
  21. chemistry

    a liquid has an enthalpy of vaporization of 30.8 kg.mol. at 273 K it has a vapor pressure of 102 mmHg. What is the normal boiling point of this liquid

    asked by ella on February 17, 2011
  22. chem

    The normal melting point of copper is 1357 K and heat of fusion of Cu is 13.05 KJ. How much heat, in kilojoules, is evolved when a 3.70 kg sample of of molten Cu freezes?

    asked by Joseph on February 11, 2010
  23. statistics

    Scores on a test have a mean of 66 and Q3 of 81. The scores have a distribution that is approximately normal. Find the standard deviation. Round your answer to the nearest tenth.

    asked by Abby on March 29, 2010
  24. statistics

    For a hypothetical normal distribution of test scores, approximately 95% fall between 38 and 62, 2.5% are below 38, and 2.5% are above 62. Given this information, (a) the mode=_____ and (b) the standard deviation=_____.

    asked by Scott F on October 26, 2011
  25. Math

    A fossilized leaf contains 21% of its normal amount of carbon 14. How old is the fossil (to the nearest year)? Use 5600 years as the half-life of carbon 14.

    asked by james on August 3, 2016
  26. Physics

    Hi I am absolutely stumped on this question. A loudspeaker is placed between two observers who are 110 m apart, along the line connecting them. If one observer records a sound level of 60.1 dB and the other records a sound level of 74.9 dB, how far is the

    asked by Joey on November 28, 2008
  27. Physics

    Hi I am absolutely stumped on this question. A loudspeaker is placed between two observers who are 110 m apart, along the line connecting them. If one observer records a sound level of 60.1 dB and the other records a sound level of 74.9 dB, how far is the

    asked by Joey on November 28, 2008
  28. Physics

    Hi I am absolutely stumped on this question. A loudspeaker is placed between two observers who are 110 m apart, along the line connecting them. If one observer records a sound level of 60.1 dB and the other records a sound level of 74.9 dB, how far is the

    asked by Joey on November 28, 2008
  29. Physics

    Hi I am absolutely stumped on this question. A loudspeaker is placed between two observers who are 110 m apart, along the line connecting them. If one observer records a sound level of 60.1 dB and the other records a sound level of 74.9 dB, how far is the

    asked by Joey on November 28, 2008
  30. Algebra

    The dimensions of a rectangle are such that it's length is 9 in. more than its width. If the length were doubled and if the width were decreased by 4 in., the area would be increased by 110 in^2. What are the length and width of the rectangle?

    asked by Anonymous on November 12, 2014
  31. Physics

    A dog searching for a bone walks 3.50 m south, then 8.20 m north of east, and finally 15.0 m west. (a) What is the magnitude of the dog's total displacement? (b) What is the direction of the dog's total displacement where directly east is taken as zero

    asked by Tasha on February 8, 2012
  32. managerial accounting

    32) Sarker manufacturing company produces and sells 40,000 units of a single product. Variable costs total $80,000 and fixed costs total $120,000. If each unit is sold for $8, what markup percentage is the company using?

    asked by Anonymous on November 26, 2011
  33. math

    This chart shows Vic's workout times for the week. Day Number of Minutes Monday 45 Tuesday 50 Wednesday 36 Thursday 70 Friday 49 What was his total time? average (mean) time? total time = 4 hours and 10 minutes average ?

    asked by Anonymous on April 11, 2013
  34. physics

    a block of mass 0.1kg is attached to spring and placed on a horizontal frictionless table .the spring is stretched 20cm when a force of 5n is applied.calculate the spring constant

    asked by ali on April 22, 2017
  35. Physics Help

    A constant force of 100N , directed upward, is applied to a 5.0kg toy rocket by the rocket's engine. What is the rocket's acceleration? I used the equation a= F/m to get 20 m/s2 but it was wrong and I don't know where to go from here still?

    asked by Eiban on February 15, 2014
  36. Social studies

    Advances in science from the Scientific Revolution were applied to human affairs during the ____________. A. Industrial Revolution. B. French Revolution. C. Enlightenment. (MY ANSWER) D. Age of exploration.

    asked by LOVE on March 8, 2016
  37. Physics

    A car is initailly travelling at 50.0km/h. The brakes are applied and the car stops over a 35m distance. What was magnitude of the car's acceleraion while it was braking? I don't know what formula to use.

    asked by Student on April 21, 2015
  38. Physics

    A crate on a floor has an applied force 15 degrees below horizontal of 952N The crate moves with constant velocity. The coefficient of kinetic friction is 0.15. What is the mass of the crate ?

    asked by scott on November 17, 2009
  39. strength of materials

    1.a concentrated load p is applied at the end of cantilever.the crosssection of the beam is a square of side "a" and with a hole of diameter "a/2" then deflection at the tip of beam is?lengh of beam is L.

    asked by venkeatesh vanigandla on May 19, 2014
  40. physics

    A force of 40N is applied at the end of a wire 4m long and it produces an extension of 0.24mm.if the diameter of the wire is 2.0mm.calculate the stress and strain of the wire

    asked by Lola on September 19, 2017
  41. Physics

    A 400 kg solid metal disk (with uniform density) has several forces applied to it, as shown. If the rotation axis is through the center of the disk, then what is the angular acceleration of the disk?

    asked by Anonymous on April 17, 2012
  42. physics

    How can I change each of Normal force, Gravity and Friction force?

    asked by pipe on May 12, 2018
  43. Math

    the scalar equation of the line through (-1,5) if (4,-1) is a normal vector to the line.

    asked by anon on October 10, 2018
  44. calculus

    If a bone is found to have 20% of its normal amount of carbon 14, how old is the bone?

    asked by Jenn on December 9, 2012
  45. calculus

    If a bone is found to have 20% of its normal amount of carbon 14, how old is the bone?

    asked by Jenn on December 9, 2012
  46. statistics

    A normal distribution is any distribution that is not unusual. True or false?

    asked by Brenda on August 20, 2010
  47. statistics

    A normal distribution is any distribution that is not unusual. (True/False)

    asked by ann on August 20, 2011
  48. english

    hi again why is mentally retarded person not like a normal person is what i meant thanks again

    asked by lila on March 1, 2009
  49. statistics

    What are the values of the mean and standard deviation of a standard normal distribution? μ = σ =

    asked by Jr on February 4, 2012
  50. physics

    A ship sails 30 kilometers 70 degrees north of east. It then turns 110 degrees to the west, giving it a new heading of 0 degrees north of west. After sailing another 30 kilometers, how far is the boat (in kilometers) from where it started?

    asked by Ujala on September 15, 2018
  51. Geometry

    1. Why are points and lines hard to define? A point you can't move at all, a line you can only move back and forth in the same direction. Does drawing a point or a line accurately illustrate its characteristics? 2. What do we mean when we say a point

    asked by Sue on October 6, 2015
  52. CHECK ANSWERS for geometry

    1. Why are points and lines hard to define? A point you can't move at all, a line you can only move back and forth in the same direction. Does drawing a point or a line accurately illustrate its characteristics? 2. What do we mean when we say a point

    asked by Sue on October 6, 2015
  53. Calculus Help

    When a foreign object lodged in the trachea (windpipe) forces a person to cough, the diaphragm thrusts upward causing an increase in pressure in the lungs. This is accompanied by a contraction of the trachea, making a narrower channel for the expelled air

    asked by Selda on April 5, 2014
  54. vapor pressure

    The total pressure in a flask containing air and ethanol at 25.7C is 878 mm Hg. The pressure of the air in the flask at 25.7C is 762 mm Hg. If the flask is immersed in a water bath at 45.0C , the total pressure is 980 mm Hg. The vapor pressure of ethanol

    asked by yayhawknelson on January 22, 2007
  55. physics

    Two blocks connected by a cord passing over a small, frictionless pulley rest on frictionless planes: a) What is the acceleration of the blocks? b) What is the tension in the cord? c) Which way will the system move when the blocks are released from rest?

    asked by ATT on March 17, 2018
  56. physics

    A basketball player standing near the basket to grap a rebound, jumps 62 cm vertically. How much total time does the player speen in the top 15 cm of the jump? How much total time does the player spend in the bottm 15 cm of this jump?

    asked by Kristen on September 10, 2007
  57. College Math

    Draw a venn Diagram to illustrate the education level of Smokers Non Smokers and people who never smoked. Use the table below Education Smokers Former Never Total College Degree 12 9 41 62 H.S. Grad 9 10 22 41 Did not grad 9 3 4 16 Total 20 22 67 119

    asked by Angie on June 29, 2017
  58. Water Treatment

    Minimum oxygen concentration should be 7.6 mg/l, concentration in raw water is 0 mg/l and you can assume a saturation concentration of 10 mg/l. Calculate the total efficiency of oxygen addition, the number of cascade steps and the total height of the

    asked by IJ on December 29, 2014
  59. Chemistry

    What do I do when writing the net ionic equation for Magnesium nitrate reacted with sodium chloride? I've wrote out the molecular equation and the total ionic equation. Everything cancels out....under my total ionic equation do i just write no reaction?

    asked by Jack on January 19, 2011
  60. Physics

    An electric eel develops a potential difference of 460 V, driving a current of 0.80 A for a 1.0 ms pulse. Find the power of this pulse. Find the total energy of this pulse. Find the total charge that flows during the pulse.

    asked by Anthony on February 17, 2010
  61. physics 11

    The engine of a train has a mass of 5.0 x 10^4kg. It can accelaerate six railway cars having a total mass of 3.0 x 10^5 at 0.40 m/s squared [fwd]. What acceleration can it give four railway cars having a total mass of 2.0 x 10^5kg? Ignore friction

    asked by needs help on October 17, 2009
  62. health

    In plain English what does this mean? Thank you, There are two confidentiality rules (and their respective settings) in MICA. The first confidentiality rule affects suppression of the display of the entire inner table (i.e., the individual cells) of a

    asked by sofia on January 17, 2018
  63. Math

    Hands on : Multiplication patterns with 10,100,and 1,000 1/ Rebecca has 4 boxes of 20 cookies . She wants to know the total number of cookies . Which basic fact must she know to compute the total? What is the total? Answer: 4*20= 80 2/ Jermy is at a

    asked by NAwaf on February 24, 2014
  64. calculus

    A car is travelling at 90mph when its brakes are fully applied, producing a constant deceleration of 22 ft/sec2. Find the distance covered by the car before it comes to a stop. (Remember: 60 mph equals 88 ft/sec.)

    asked by Garrett on April 11, 2010
  65. Statistics

    Regression analysis was applied between sales data (in $1,000s) and advertising data (in $100s) and the following information was obtained. ~ y = 12 + 1.8x n = 17 SSR = 225 SSE = 75 sb1 = 0.2683 Refer to Exhibit 12-3. The critical F value at a = 0.05 is a.

    asked by Yazzy on June 19, 2015
  66. physics

    A rough wooden block of mass 4kg place on a rough horizontal plank is applied by a force of 35n until it just starts to move calculate the coefficient of static friction (take 9=10m/52)

    asked by Anaebo on November 15, 2011
  67. Stress & Strain (Help Please)

    A tie bar is made of a material having a tensile strength of 231 MPa and has to carry a load of 255 kN. What id the diameter of the bar if a factor of safety of 7 is applied? ANS = 99.2 mm Cannot figure out how to get the answer. Need help please. Thank

    asked by Danny on August 10, 2013
  68. physics

    if the greatest acceleration force which may be be applied to a vehicle is numerically equal to its weight, find a the least distance and b the least time, in which the vehicle travelling on a horizontal road can be brought to rest from an initial velocity

    asked by tennesha greene on January 17, 2011
  69. Finance

    Jean will receive $8,500 per year for the next 15 years from her trust. If a 7% interest rate is applied, what is the current value of the future payments? Describe how you solved this problem, including which table (for example, present value and future

    asked by Anonymous on November 24, 2009
  70. Physics

    A tie bar is made of a material having a tensile strength of 231 MPa and has to carry a load of 255 kN. What is the diameter of the bar if a factor of safety of 7 is applied? ANS = 99.2 mm Cannot figure out how to get the answer. Need help please. Thank

    asked by Danny on August 17, 2013
  71. physics

    a horizontal force of 600Npulls two masses 10kg lying on a frictionnnnless surface connected by a light string .what is the tension in the string?Does the answer depend on which mass end the pull is applied

    asked by sara on May 26, 2013
  72. 7th grade math

    1. Price of the dolls: $12.99 A. Price of the dolls with a 5% sales tax. Show all of your work! [4 points] B. A discount of 20% is applied to the doll’s original price of $12.99. What is the price of the dolls with the discount applied to $12.99 + 5%

    asked by Delilah on November 27, 2012
  73. College Biology

    A 21-year old brother of a person with insulin-dependent diabetes mellitus experienced increased urination and thirst for 6 weeks, along with a 15 pound weight losss, despitre a normal appetite. Fearing that these symptoms meant he also had developed

    asked by Anonymous on October 27, 2010
  74. Algebra 2

    A parent leaves his house during rush-hour each weekday to get her husband from work and pick up her child from school. Her house, husband work and school are equal distance of 5 mile from each other. (On an imaginary triangle.) she usually makes the whole

    asked by Ray on June 4, 2007
  75. physics

    If a vibrating system has total energy Eo , what will its total energy be (in terms of Eo) if you double the amplitude of vibration? If you want to triple the total energy of a vibrating system with amplitude Eo , what should its new amplitude be (in terms

    asked by Erin on April 18, 2008
  76. Math

    A firm has $200,000 in total assets and $120,000 in owner's equity. What are the total liabilities? A. $80,000 B. $200,000 C. $320,000 D. Cannot be determined from the information given A

    asked by Angela on December 20, 2013
  77. Microeconomics

    I am trying to calculate profit. If I am given the total revenue of $21,000,000. There are not fixed or variable costs. There is a constant marginal cost of $1,000.00. Would my profit still be the total revnue of $21,000,000?

    asked by G on October 7, 2008
  78. physics

    If instead, the swimmer makes 77.5 laps in the same pool in 1.5 h, determine the total distance the swimmer traveled, the swimmer's total displacement, the swimmer's average velocity, and the swimmer's average speed.

    asked by Dave on January 22, 2014
  79. Accounting

    A firm has $200,000 in total assets and $120,000 in owner's equity. What are the total liabilities? A. $80,000 B. $200,000 C. $320,000 D. Cannot be determined from the information given A

    asked by Angela on December 20, 2013
  80. Physics

    If instead, the swimmer makes 93.5 laps in the same pool in 4 h, determine the total distance the swimmer traveled, the swimmer's total displacement, the swimmer's average velocity, and the swimmer's average speed.

    asked by Anonymous on January 21, 2013
  81. Business math

    A firm has $200,000 in total assets and $120,000 in owner's equity. What is the total liabilities? A.$80,000 B.$200,000 C.$320,000 D.Cannot be determined from the information given.

    asked by Sally on May 30, 2009
  82. maths

    The total population of the earth was estimated to be 6.42 billion people.Given that the total land surface area of the earth is about 1.5×10^8km^2.Find the average number of people living in 1 km^2 of land on earth,correct to 2 significant figures.Thanks

    asked by ashley on January 12, 2014
  83. math 111

    The overhead or fixed cost for the company is 1,000 per week. In addition, the cost of manufacturing each boat costs$200. Find an equation C=f(x) for the total cost per week where x is the number of boats manufactured in a week. b) Graph the total cost

    asked by tbcc on July 3, 2013
  84. Physics

    During takeoff, an airplane climbs with a speed of 110 m/s at an angle of 44 degrees above the horizontal. The speed and direction of the airplane constitute a vector quantity known as the velocity. The sun is shining directly overhead. How fast is the

    asked by Anonymous on September 7, 2013
  85. maths

    the ratio of total surface area to the curved surface area of a right circular cylinder is 3:2 find the volume if its total surface area is 14784 cm2

    asked by sukanya on December 6, 2015
  86. nath

    The formula, Total price=Unit price x Number of units, is used to find the total price of the product. The formula can be written in symbols as T=UN. Solve the formula for U.

    asked by Francine on September 8, 2013
  87. college physics 2

    A double-slit diffraction pattern is formed on a distant screen. If the separation between the slits decreases, what happens to the distance between interference fringes? Assume the angles involved remain small. A double-slit diffraction pattern is formed

    asked by Anonymous on March 22, 2014
  88. stats help!

    thank you in advance! in a given year the college admissions office accepts applicants from students, who are then either accepted or not accepted. accepted students may or may not decide to attend college. suppose the scores on a certain entrance exam for

    asked by ashley on January 13, 2011
  89. Finance

    You plan to open a retirement account. Your employer will match 50 percent of your deposits up to a limit on the match of $2500 per year. You believe the fund will earn 12 percent per year over the next 30 years, and you will make 30 deposits of $5000,

    asked by katie on February 23, 2013
  90. math

    In a right triangle ABC, C = 90°, b = 380.1 inches and c = 589.1 inches. Solve for all the missing parts using the given information. (Round each answer to one decimal place for side and to two decimal places for angles.) A = ° B = ° a = __inches IM

    asked by Anonymous on February 10, 2012
  91. geometry

    I have a 50 question assigment that its due tomorrow and I'm stuck on this question. "Write the contrapositive,converse,and inverse of this statement.Determine whether they are true or false.If its false.find a conterexample "Two angles measure 90 are

    asked by Elena G. on September 19, 2012
  92. 12th grade maths

    how to present math in different angles which represents depth of subject,easiness,empowerment,basics,logic,analyze,view of subject from back,view from front.Give multiple e.g.s .(just 11th & 12th)

    asked by R_t on August 20, 2010
  93. 12th grade maths

    how to present math in different angles which represents depth of subject,easiness,empowerment,basics,logic,analyze,view of subject from back,view from front.Give multiple e.g.s .(just 11th & 12th)

    asked by R_t on August 20, 2010
  94. physics

    A loudspeaker of mass 24.0 {\rm kg} is suspended a distance of h = 2.20 {\rm m} below the ceiling by two cables that make equal angles with the ceiling. Each cable has a length of l = 3.30 {\rm m}. What is the tension T in each of the cables? Use 9.80 {\rm

    asked by falcon306 on July 17, 2011
  95. Physics

    Two fraternities are in a tug of war. Theta Chi is pulling with a total force of 4,748 newtons to the east and Tau Kappa is pulling with a total force of 3,969 newtons to the west. What is the magnitude and direction of the resultant? Which team will win?

    asked by Amanda on November 27, 2012
  96. Physics-Please help

    I need a little direction with this question:If someone could provide the correct formula, I think I divide each reistor by 12V but I'm not sure. To find total resistance, do I just add the reciprocals? Three resistors connected in parallel have individual

    asked by Sally on March 24, 2011
  97. algebra

    how do I convert 9/16 into a percent? Is this done differently in a algebric form? Divide 16 into 9.000, using the normal procedures of long division. This should give you 0.5625; then multiply the decimal by 100. This isn't algebra, by the way.

    asked by help me understand on April 27, 2007
  98. Genetics

    Phenylketonuria is a metabolic disease of humans that results from an autosomal recessive gene. If the frequency of phenylketonurics in the population is 9/10,000, what is the probability that two normal individuals will produce a diseased child?

    asked by Keira on November 13, 2008
  99. Human Growth

    Children of mothers who smoked during pregnancy are at higher than normal risk for all of the following except: A. Cancer B. poor IQ scores C. sudden infant death syndrome D. above-average birthweight I choose D is that correct

    asked by Tonya on October 23, 2015
  100. physics

    A 5.4 kg wagon is pulled along a horizontal surface. The acceleration of the object is 0.9 m/s^2. What is the coefficient of friction between the surfaces? Any help is much appreciated! I am not sure how to go about the problem other than I think I must

    asked by Jenni on December 29, 2010