1. Calculating Chi Squared

    I did a biology experiment where I need to analyze the statistical significance of betweeen a data set. My experiment consisted of measuring the effects in photosynthesis and cellular respiration by exposing solutions with leaf discs to different light

    asked by Catherine on October 29, 2011
  2. analytical chemistry

    DrBob222, it is me again. Continue the question 5mL of a solution A (unknown concentration) was transferred into sic 25mL volumetric flask. The following volumes of a standard solution of A with with a concentration 75ppm were added to the flask: 0mL,

    asked by katy on May 10, 2015
  3. ordinary differential equation

    A contains 200 liters of solution in which is dissolved 40 kg of salt. Tank B contains 400 liters of solution in which are dissolved 80 kg of salt. Pure water flows into tank A at rate of 10 liters per second. There is a drain at the bottom of tank A.

    asked by thigan on May 21, 2016
  4. Stats

    When asked about their driving, 56% of students say they are better than the average driver, 39% say they are an ave. driver and the rest say they are worse than ave. A pair of students are driving home together for break. What is the probability that at

    asked by CM on October 14, 2009
  5. physics

    1) A golf ball is hit from a position that is 4m higher than h ehorizintal area where the ball lands. The intiial velocity of he ballis 30ms-1 at a angle of 0 above the horizintal a)show that the maximum height of the ball above the landing area is

    asked by 0ooooooooo0 on September 28, 2017
  6. 1 chem question

    A base has a Kb of 2.5 x 10–11. Which of the following statements is true? This is a concentrated base. This base ionizes slightly in aqueous solution. This is a strong base. An aqueous solution of this base would be acidic. (do explain. i don't

    asked by Sara on February 14, 2012
  7. Chemistry

    Write rate law expressions? 2NOCl(g) --> 2NO(g) + Cl2(g) S2O3^2-(aq) + H^+(aq) --> HSO3^-(aq) + S(s) (Sulfur initially forms a colloid solution so it can be treated as aqueous.) (1) Write the rate law expression for the above reactions, assuming these are

    asked by Donna on May 21, 2008
  8. Physics (Calc Based)

    I understand how to solve this problem ,however cannot figure out why the .5 degrees is being converted to radians: PROBLEM: How would one determine the percent uncertainty in theta and in sin of theta for the following: 1) theta = 15.0 degrees +/- 0.5

    asked by Tom on September 8, 2010
  9. Physics

    A large statue in a crate is being moved. The mass of the statue and the crate is 150 kg. As the statue slides down a ramp inclined at 40.0°, the curator pushes up, parallel to the ramp’s surface, so that the crate does not accelerate. If the statue

    asked by Maddy on December 5, 2015
  10. Chemistry

    Based on the following observations for 3 unidentified metals (Z, X, and D) and solutions of their metal cations (Zn+ and En+), rank the metals in terms of reducing agent strength, from lowest to highest. -When metal X is placed in an aqueous solution of

    asked by Nathaly on April 2, 2017
  11. math

    Two station astronauts will each perform three 8-hour EVAs within 13 days to repair a damaged solar panel that was impacted by a micrometeoroid on the space station. What is the total amount of oxygen needed by the two astronauts to accomplish this? Please

    asked by math on January 29, 2015
  12. Math

    1. What are the steps to solve this problem? 0.000027 ÷ 0.000009 Requirements: • Explain how to use scientific notation to solve the problem. • Describe how to divide numbers written in scientific notation. • Give you final answer in simplest form.

    asked by anonymous on November 14, 2013
  13. math

    Write an inequality to solve each problem.Then solve the inequality. 1. Marcus wants to buy baseballs.He has $35. What is the most each baseball can cost? 2. Melinda charges $4 per hour for babysitting. Mrs. Garden does not want to spend more than $25 for

    asked by thomas on March 5, 2014
  14. Physics

    A basketball player, standing near the basket to grab a rebound, jumps 73.6 cm vertically. How much time does the player spend in the bottom 15.4 cm of the jump? I've been told that I need to use the height of the jump to solve for V. Then I need to use

    asked by Lindsay on October 10, 2007
  15. Algebra 2 review

    Bob and Latoya both drove to a baseball game at a college stadium. Bob lives 70 miles from the stadium and latoya lives 60 miles from it. Bob drove at a rate of 50 miles/hour and Latoya drove at a rate of 40miles/hour. If they both left home at the same

    asked by Beth on April 28, 2011
  16. Geography (Ms, Sue)

    How might a road system have helped to hold the Inca empire together? A: As the Inca empire was mainly located in the Andes mountains, a road system might have helped to hold the Inca empire together as it crossed mountains and deserts to link the empire.

    asked by Anonymous on September 25, 2013
  17. odd and even functions

    Using f is odd if f(-x) = -f(x) or even if f(-x) = f(x) for all real x, how do I 1)show that a polynomial P(x) that contains only odd powers of x is an odd function 2)show that if a polynomial P(x) contains both odd and even powders of x, then it is

    asked by Jen on January 30, 2007
  18. Chemistry

    When a clear aqueous solution of calcium chloride (CaCl2) is mixed with a clear aqueous solution of sodium carbonate (Na2CO3), a white solid precipitate forms. What happens to the mass of the mixture after the solid precipitate forms? Choose the best

    asked by Lily on September 25, 2012
  19. Programming

    As instructed by jim, I am reposting my question with work done so far... In this lab, you will demonstrate your understanding of two-dimensional arrays by implementing a TicTacToe game. The service class created in this lab will be utilized later in the

    asked by Tim on October 14, 2009
  20. math connections

    1. x/4+1=-5 A)-2 B)16 C)4 D)-24 ****?? 2. 6x+29=5 A)-4****** B)-18 C)204 D)-144 3. combine like terms -21a+16a -5a**** 5a 37a -37a 9a-b-2a-10b simplify -7a + 11b 11a + 9b -11a-9b 7a-11b ????? solve -4n + 7 + 2n=1 1 3 -3 4 solve 4(y-4)=8

    asked by dude on December 21, 2016
  21. math connections

    1. x/4+1=-5 A)-2 B)16 C)4 D)-24 ****?? 2. 6x+29=5 A)-4****** B)-18 C)204 D)-144 3. combine like terms -21a+16a -5a**** 5a 37a -37a 9a-b-2a-10b simplify -7a + 11b 11a + 9b -11a-9b 7a-11b ????? solve -4n + 7 + 2n=1 1 3 -3 4 solve 4(y-4)=8

    asked by dude on December 21, 2016
  22. MATH!!!!ASAP!!!

    How can i graph this equation by plug in numbers???? x^2-y^2=9 HELP PLZ!!!!!!THX ALOT!!!! Assign numbers to x and solve for y then put them in a graph: let's say x is -3 Then 9=y^2+9 y^2=0 y=0 Ok now x= -4 16=y^2+9 y^2=5 y=2.236 Also you can assign y a

    asked by Katrina on December 14, 2006
  23. Algebra

    I cannot solve the problem please help me. I'm suppose to set the equations up to solve for t. x = y + rt + at^2/2 Even when I plug in the values I don't get the answer. x = 16.4 y= 0 r= 0*cos(45)a=0 t is suppose to equal 2.32 if I set the problem up

    asked by Angie on October 11, 2012
  24. Math: Limits

    Estimate the limit numerically. lim as x→(approaches to)5 6e^(x − 5) How do I solve it? I don't plug in the numbers do I? Then how do I do this as well? What should I do to solve lim x→(approaches to)− infinity 6xe^(7x) Do I disregard the other

    asked by Nick on March 10, 2012
  25. Math 2(PLase Help)

    I tired my best on this one... 4.(6y^2+4y-3)+ (3y^2+2)= My WOrk=18y^4+12y-6 Unfortunately, your work is incorrect. Based on the original problem, it looks like you multiplied things together. The parentheses don't matter in this problem. Simply combine

    asked by Margie...(HappyNewYearEveryone) on January 2, 2007
  26. Physics

    A man drags a table 4.25 m across the floor, exerting a constant force of 54.0 N, directed 28.0° above the horizontal. I have found the work done by the applied force to be 202.6 J but I can't find the second part of the question which is below. (b) How

    asked by Cindy on October 4, 2011
  27. health

    I am completely confused can anyone help me? Here is my question.... For each body system, identify which body approach(es) might best be used to organize information. Choose only from the following approaches: microscopic-to-macroscopic, body directions

    asked by Cindy on May 30, 2010
  28. Algebra 1

    The manager of a band recommends that the band sell its CDs for $8.75. The band decides to sell the CD for p dollars. A) Write an absolute value expression that tells how far the bands price is from the recommended price. B) The band wants the price of its

    asked by Ellie on October 4, 2015
  29. Biochemistry

    On preparation of a solution of protein, you attempted to dissolve the substance in water, but a suspension resulted. Drop-wise adition of NaOH solution, with stirring, eliminated the suspension. Addition of acid to the original suspension had no effect.

    asked by Andrew on January 25, 2009
  30. Econ

    Suppose the government wants to reduce the total pollution emitted by three firms in its area. Currently, each firm is creating 4 units of pollution in the area, for a total of 12 pollution units. The government wants to reduce total pollution in the area

    asked by John on May 19, 2012
  31. Physics

    i know this is alot to ask for but these 10 i can nott get out of the 30 A man pulls a 10-kg box across a smooth floor with a force of 71 newtons at an angle of 23 degrees and for a distance of 97 meters. How much work, to the nearest joule, does he do?

    asked by Michelle on December 10, 2008
  32. (Math) PLZ CHECK ANSWERS

    1. Which number is a solution of the inequality? 10.68 A)-5 B)-6 C)6 D)7*** 3. Which number is a solution of the inequality? 6>z(10-z) A)0 B)1 C)2 D)3*** 4. What are all the subsets of the set? {-1,9} A) 0, {-1}, {9}*** B) {-1}, {9}, {-1, 9} C) 0, {-1},

    asked by Katrina on October 28, 2016
  33. math

    Ok, so when you are solving an equation, and you have an answer such as 5x=0 , does that mean that it is no solution or all real #s? And, when the answer is 4=4 , does that mean it is no solution or all real #s? And when the answer is 2x=2x, does that mean

    asked by K on May 7, 2013
  34. Chemistry

    HOBr (aq) H+ (aq) + OBr- (aq), Ka = 2.3 x 10^-9 Hypobromous acid, HOBr, is a weak acid that dissociates in water, as represented by the equation. (a) Calculate the value of [H+] in a solution of HOBr that has a pH of 4.95. Ans: 1.1 * 10^-5 M (b) Write the

    asked by Confused on April 10, 2012
  35. Math Please help

    Find the next number in the sequence -2,4,-8,16,____ 243,-81,27,-9,____ 34,-68,136,-272,____ on the first, the sequence alternates signs, and is 2^n. Next term is -32 On the second, divide by three, alternate signs. Third, alternate signs, double...

    asked by Anonymous on April 7, 2007
  36. anonymous

    I need help solving these problems. I tried but my teacher did not teach it to us so it is very difficult for me. Thanks. "Projectiles launched at an angle" 1. A golfer can hit a golf ball a horizontal distance of over 300 m on a good drive. What maximum

    asked by PHYSICS.....confused on October 25, 2006
  37. math prob:(

    a. Solve a – 9 = 20 b. Solve b – 9 > 20 c. How is solving the equation in part a similar to solving the inequality in part b? d. How are the solutions different?

    asked by Princess Anna on January 22, 2014
  38. MATH

    a.) Solve a - 9 = 20 b.) Solve b - 9 > 20 c) How is solving the equation in part a similar to solving the inequality in part b? d.) How are the solutions different?

    asked by Cindy on January 17, 2014
  39. Math

    a.) Solve a - 9 = 20 b.) Solve b - 9 > 20 c) How is solving the equation in part a similar to solving the inequality in part b? d.) How are the solutions different?

    asked by Jenny on January 17, 2014
  40. Solving inequalities

    I have to solve the following inequalities: x^2 + y^2 is less than or equal to 49 y is less than or equal to 3-x^2 I know that these are the equations of a circle and a parable. There should be 3 solutions. However, I am not sure how to solve these

    asked by Joanie on March 30, 2009
  41. PreCalc

    Someone please help me solve this equation for y. (x^2)(y^2)+xy=1 I need to solve for y so that i can graph it! y^2 + y/x - 1/x^2 = 0 Treat 1/x as b and -1/x^2 as c in the quadratic equation ax^2 + bx + c = 0 There are two solutions y = [-1/x + sqrt(1/x^2

    asked by Jill on February 26, 2007
  42. math

    a. Solve a - 9 = 20 b. Solve b - 9 > 20 c. How is solving the equation in part a similar to solving the inequality in part b? d. How are the solutions different?

    asked by victoria on December 19, 2013
  43. Differential equation

    y′=8e^(4x)(1+y2)solve for y(0)=−2 ⇒ y= I tried to solve the problem and got the equation: tan^-1((2e^(4x)-2+tan(-2)))it says I am wrong and I resolved and got the same thing I must be doing something wrong please help!

    asked by Joe on June 12, 2015
  44. Math

    Let f(x) = 2x + 1 − sin(x), how many roots does f(x) have in the interval [−π, π]? Use the next steps to prove that it has only one root. a) Use the Intermediate Value Theorem to show that f(x) has at least one root. (b) Explain why f(x) is

    asked by Paula on February 9, 2015
  45. journalism check answers

    What is a fixer? a newsroom technician who handles the media outlet's infrastructure a local reporter in a far-flung place who helps foreign correspondents navigate the logistics of reporting in an unfamiliar place a source who "fixes" or misrepresents a

    asked by Robb4301 on February 27, 2015
  46. Chemistry

    2 Al(s) + 3 Cl2(g) → 2 AlCl3(s) Into a cylinder with a moveable piston (pressure stays constant), a piece of aluminum is placed and chlorine gas is added. After they react, the temperature inside the piston is considerable higher than its initial

    asked by tatyana on October 14, 2017
  47. Art

    Hello. I'm suppose to examine the "winged genie fertilizing a date tree" and explain the elements of art found in the work, one particular element that helped with the overall success of the artwork, and explain what type of movement is shown in the work.

    asked by Dannie on February 4, 2014
  48. algebra

    Solve each equation by factoring. 7x²-243=0 I know I'm supposed to add 243 to the other side but don't know what else to do. Divide maybe? Thanks in advance. -243+7x^2= 0 (reorder) -243+243+7x^2 = 0+243 (add 243 to both sides) 7x^2=243 (Combine like

    asked by Sir Galahad on November 27, 2006
  49. physiology

    Why do the control mechanisms have several intergation centers? Julia, did you mean integration or interrogation? The control systems are not simple, they are multilayered, multistepped, and operate by releasing hormones, enzymes, and bioactive substances

    asked by julia on June 3, 2007
  50. 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 on April 29, 2012
  51. physics

    Based on the third law motion of equal and opposite forces, a mass should never accelerate because the net force on it will always be zero. Resolve the issue. would F=ma answer this question? If a force is exerted by object A on object B, then B exerts a

    asked by Benji on November 20, 2006
  52. math

    Consider a state lottery that has a weekly television show. On this show, a contestant receives the opportunity to win $1 million. The contestant picks from four hidden windows. Behind each is one of the following: $150,000, $200,000, $1 million, or a

    asked by Leslie on June 17, 2010
  53. English

    this is my answer to this question is it right. select the sentence that is punctuated correctly. 1.Paloma did not make it to work for, her car broke down on the freeway. 2.Paloma did not make it to work for her car,broke down on the freeway. 3.Paloma did

    asked by clint74 on February 4, 2012
  54. HCA/210

    My final assignment is due for my HCA/210 I have to come up with 700-1050 words on the following: Develop a unique proposal that describes a new health care system. Consider the current health care systems strengths, weaknesses, and challenges. Also

    asked by Nikol on June 28, 2010
  55. math

    Enter your answer and show all the steps that you use to solve this problem in the space provided. Drawings not to scale On Quadrilateral A B C D, side A B measures 10 units and side A D measures 6 units. Angle D measures 86 degrees and Angle C measures 41

    asked by umbrella academy fan on April 1, 2019
  56. statistics

    A sample of 106 golfers showed that their average score on a particular golf course was 87.98 with a standard deviation of 5.39. Answer each of the following (show all work and state the final answer to at least two decimal places.): (A) Find the 90%

    asked by Laynette on September 2, 2011
  57. statistics

    A sample of 134 golfers showed that their average score on a particular golf course was 87.43 with a standard deviation of 4.53. Answer each of the following (show all work and state the final answer to at least two decimal places.): (A) Find the 99%

    asked by Valerie on November 2, 2010
  58. Science-Physics

    You push a 67 kg box across a floor where the coefficient of kinetic friction is uk = .55. The force you exert is horizontal. (a) How much power is needed to push the box at a speed of .50 m/s? (b) How much work do you do if you push the box for 35 s?

    asked by Erica on January 9, 2011
  59. PHYSICS

    Hooke's Law: 1.) If it takes 10 N to compress a spring 20cm, how much energy will be stored in the spring when it is stretched 50cm. ***Also, for ex: If I am doing work against a restoring force, say, doing work against gravity, what kind of force is the

    asked by Angie on March 23, 2016
  60. vector and mass

    A particle of mass m kg is acted on by two forces F1 and F2 with magnitudes 3root5 newtons and root5 newtons ad drections parallel to the vectors i+2j and i-2j respectively The particle is initially at a position given by vector 2i+j iv calculated the

    asked by rav on July 15, 2006
  61. quantitative chemistry

    Consider a solution made by mixing 500.0 mL of 0.04182 M Na2HAsO4 with 500.0 mL of 0.03645 M NaOH. Complete the mass balance expressions below for Na and arsenate species in the final solution. There are 4 arsenate species, but I only got three of them. I

    asked by Jackie on March 22, 2013
  62. chemistry

    Consider a solution made by mixing 500.0 mL of 0.04182 M Na2HAsO4 with 500.0 mL of 0.03645 M NaOH. Complete the mass balance expressions below for Na and arsenate species in the final solution. There are 4 arsenate species, but I only got three of them. I

    asked by Jackie on March 23, 2013
  63. CHM 152

    At 20oC, a 2.32 M aqueous solution of Ammonium Chloride has a density of 1.0344g/ml. WHat is the molality of Ammonium Chloride in the solution? The formula weight of NH4Cl is 53.50 g/mol?? I am not sure how to incorporate the density into the problem to

    asked by Car on June 10, 2010
  64. chemistry

    A sample of fresh grapefruit juice was filtered and titrated with the I2 solution prepared in Part 2. A 100.0 mL sample of the juice took 9.85 mL of the iodine solution to reach the starch end point. What is the concentration of Vitamin C in 100ml juice?

    asked by saddee on April 28, 2009
  65. Chemistry

    I have no idea where to even start with this problem on my pre-lab! For part of the experiment, you will need to prepare 100 mL of 0.025 M CH3CO2H, starting from commercial "glacial" acetic acid, which has a concentration of 17.4 M. This is best done by

    asked by Jen on October 10, 2011
  66. math

    eva wants to make two pieces of pottery.she needs 3/5 pound of clay for one piece and 7/10 pound of clay for the other piece.she has three bags of clay that weigh 4/5 pound each.how many bags of clay will eva need to make both pieces of pottery?how man

    asked by keon on October 2, 2014
  67. Computer Science

    The digits 0, 1, and 8 look much the same if rotated 180 degrees on the page (turned upside down). Also, the digit 6 looks much like a 9, and vice versa, when rotated 180 degrees on the page. A multi-digit number may also look like itself when rotated on

    asked by Anonymous on March 13, 2011
  68. English

    Hello. I'll be grateful for your help. 1)Is it possible to use "deal with" in the same meaning as "solve" in the context "I hope they will solve the Middle East conflict"? 2)Which is the correct position of the preposition in the sentence "the region has

    asked by Ilma on July 7, 2011
  69. polytechnic of Namibia

    Basic science, A hammer of mass is dropped from thew top of a roof of the two storey building to the ground. Another hammer of equal mass fell from a coffee table to the ground. Given than the height of the two storey building and the coffee table are 10m

    asked by frans on September 7, 2015
  70. science

    Suppose an ideal car jack has an input work 2750 J. It lifts a car 0.35 meters in 8 seconds. a. What is the output work of the jack? b. How much power is required to lift the car? c. What is the efficiency of the jack?

    asked by Anthony on March 14, 2017
  71. MATH, 3rd time i posted this

    can someone please help me, i posted this like 3 times. i need help on a couple of questions. I did all my other questions but i need a lot of help with the word problems... 1. The side length of a small square is s. A larger square has a perimeter of

    asked by Olly on March 26, 2013
  72. Chemistry

    A saturated solution of barium chloride at 30 degrees celcius contains 150g of water. How much additional barium chloride can be dissolved by heating this solution by heating this solution to 60 degrees. Solubility of Bacl @ 30 degrees=38.2g/100g water

    asked by Sumaiyah on June 20, 2013
  73. Chemistry

    A saturated solution of barium chloride at 30 degrees celcius contains 150g of water. How much additional barium chloride can be dissolved by heating this solution by heating this solution to 60 degrees. Solubility of Bacl @ 30 degrees=38.2g/100g water

    asked by Sumaiyah on June 20, 2013
  74. Chemistry

    A saturated solution of barium chloride at 30 degrees celcius contains 150g of water. How much additional barium chloride can be dissolved by heating this solution by heating this solution to 60 degrees. Solubility of Bacl @ 30 degrees=38.2g/100g water

    asked by Sumaiyah on June 20, 2013
  75. algebra

    find the average weight in pounds of a type of bird of your choice. Use the rational exponent equation L = 2.43 * W^0.3326 to estimate the wingspan L in feet of the bird that weighs W pounds show the average weight. How do I show the calculations necessary

    asked by Rick on December 1, 2007
  76. Precalculus

    (a) Suppose $x$ and $y$ are points on the unit circle such that the line through $x$ and $y$ intersects the real axis. Show that if $z$ is the point where this line intersects the real axis, then $z = \dfrac{x+y}{xy+1}$. (b) Let $Q_1 Q_2 \dotsb Q_{18}$ be

    asked by Zheng on January 31, 2017
  77. Economics

    The marginal tax rate is defined as the extra taxes paid on additional income divided by the increase in income. Calculate the marginal tax rate for the proportional tax system as income rises from $50,000 to $100,000. Calculate the marginal tax rate as

    asked by Sally on November 14, 2006
  78. chem(freezing point)

    please help! I am lost! Question: Find the expected freezing point of a water solution that contains 286g of aluminum nitrate (Al(NO3)3) in 8.5 kg of water. answer in celcius Note the correct spelling of Celsius. delta T = i*Kf*m Determine the molality of

    asked by Anonymous on May 29, 2007
  79. maths help

    Hi MY question is if a cylinder has a volume of 72cm cubed and a cross-sectional area of 18cm squared. Work out the height of the cylinder Can someone show me how we do it by the steps The volume of a cylinder is given by volume = (cross-sectional area) x

    asked by Ali on April 23, 2007
  80. math

    e. Felix Baumgartner is a daredevil famous for breaking the sound barrier during a freefall on October 14, 2012. Aided by a weather balloon, he climbed to a height of 128,100 feet. More than 24 miles in the air, he was so high up that he could see

    asked by kat on June 17, 2014
  81. Algebra Question

    What am I doing wrong I am using the Gauss Jordan method to calculate this answer and some other students are coming up with differant answers. Problem is 3x+y+z=5, x+5y-z=-8, 10x+7y+z=2 My answer is (-6z+3,7z-4 _________, z ( 11 11) Where I have +3 they

    asked by mike on December 18, 2009
  82. math

    Parker Inc. purchased a $30,000 asset with a salvage value of $1,200 and an estimated useful life of three years. What is the book value at the end of years one and two using the 150% declining balance method?

    asked by Anonymous on May 10, 2011
  83. Calc

    find absolute max and min of f(x)=cosx+sin^2(x) on interval [0,2pi]. Give exact answers, not decimal approx. (Use closed interval method)

    asked by Anonymous on October 22, 2014
  84. Accounting Adjustment

    Use the straight line amortization method. Equipment amortizes 20 percent per year. Trial Balance for March 31, 2005 shows equipment worth $90,030.

    asked by Colleen on February 22, 2007
  85. Math

    A $26,000 company car is expected to be driven for 120,000 miles and then salvaged for $3,500. Find the unit depreciation using the units-of-production method

    asked by Khandi on July 29, 2008
  86. Health/ Basic Clinical Procedures

    please check my answer True or False The medical assistant measured the circumference of the infant's head the method of the exam has occurred is called observation ? I said false

    asked by Helana on April 20, 2008
  87. Accounting 111

    Would the loss on retirement of long-term debt be added to or deducted from net in come in determining net cash flow from operating activities by the indirect method?

    asked by Rochelle on April 29, 2015
  88. biology 12

    what is the best method useful for estimating the populations of eagles, and why? i orginally thought counting the number of nests. but i don't know why its the best way of estimating the population. can you plesae correct me if im wrong and help me with

    asked by yesudas on September 10, 2011
  89. calculus

    use the method of cylindrical shells to find the volume of the solid obtained by rotating the region bounded by the given curves about the x-axis. sketch the region and a typical shell. x=1+y^2, x=0, y=1, y=2

    asked by confusing on September 8, 2013
  90. Physical sciences

    Two forces A and B act at a point O. A=30 N at 60 degree and B= 40 N at 120 degree, relative to x-axis. Calculate the magnitude and direction of the resultant force using the method of perpendicular components.

    asked by Lee on January 26, 2016
  91. Physics

    A football player runs the pattern given in the drawing by the three displacement vectors A, B, and C. The magnitudes of these vectors are A = 5.0 m, B= 15 m, and C = 18 m. Using the component method, find the magnitude and direction è of the resultant

    asked by Nat on September 7, 2016
  92. writing/history-QUICK PLEASE

    Hi, I'm trying to write a good lead for my research paper on Confucius. I'm using the "snapshot" method. So, I need an important event in Confucius' life that I can describe in writing. PLEASE HELP!!!! THANKS IN ADVAVCE! -aShLeY

    asked by Ashley on January 21, 2010
  93. biology 12

    what is the best method useful for estimating the populations of eagles, and why? i orginally thought counting the number of nests. but i don't know why its the best way of estimating the population. can you plesae correct me if im wrong and help me with

    asked by yesudas on September 10, 2011
  94. Bio

    All organisms within any ecosystem have something in common All organisms share... A.the components that make up their genetic code B.the same oganelles C.the same method of obtaining nutrients D.the ability to reproduce asexually A

    asked by Anonymous on April 21, 2016
  95. physics

    A football player runs the pattern given in the drawing by the three displacement vectors A, B, and C. The magnitudes of these vectors are A = 5.0 m, B= 15 m, and C = 18 m. Using the component method, find the magnitude and direction è of the resultant

    asked by james on February 8, 2013
  96. chemistry

    Here are 2 questions I worked out, but need them checked. Also, can't get answer to another question correct unless question 1 is correct. Would you check the first 2 and help me with the third? 1) What is the pH of a 0.05 M solution of TRIS acid (pka =

    asked by alan on February 2, 2008
  97. chemistry lab

    Here are 2 questions I worked out, but need them checked. Also, can't get answer to another question correct unless question 1 is correct. Would you check the first 2 and help me with the third? 1) What is the pH of a 0.05 M solution of TRIS acid (pka =

    asked by ryan on February 2, 2008
  98. Trig

    solve to four decimal places 1.3224sinx + 0.4732=0 :for all real x values solve for sinx, then arcsinx. solve for sinx, then arcsinx. so its sinx= -.4732/1.3224 and i get -.36594 but how do you get the other values for a real x Ok, use your calculator.

    asked by Kate on April 16, 2007
  99. Science

    1. In an experiment performed by Gregor Mendel the results were are as follows. Two pea plants were crossed both were heterozygous for two traits, YyRr, yellow and round. The following F1 offspring were obtained, 315 round yellow, 101 wrinkled yellow, 108

    asked by Jessie on March 14, 2011
  100. Physics

    Station Math Two station astronauts will each perform two 8-hour EVAs within 13 days to repair a damaged solar panel that was impacted by a micrometeoroid on the space station. What is the total amount of oxygen needed by the two astronauts to accomplish

    asked by Allison on December 27, 2014

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