Questions Asked on
March 17, 2011

  1. Chemistry

    human blood contains dissolved carbonc acid in equilibrium with carbon dioxide and water according to the reaction: h2CO3(aq)CO2(aq)+H2O(l) explain why decreasing the concentration of Co2 will ultimately decrease the concentration of H2CO3.

    asked by Alexis
  2. education

    what is the difference between reconstructionism, pragmatism, progressivism, behaviorism, essentialism, and perennialism

    asked by Anonymous
  3. arithmetic

    use the geometric mean to find the 7th term in a geometric sequence if the 6th term is 50 and the 8th term is 18

    asked by Taylor White
  4. Calculus (pleas help!)

    Find the slope of the tangent line to the ellipse x^2/36 + y^2/49 =1 at the point (x,y). slope =_______ Are there any points where the slope is not defined? (Enter them as comma-separated ordered-pairs, e.g., (1,3), (-2,5). Enter none if there are no such

    asked by Abi
  5. Spanish

    Choose the sentence which correctly says "The king doesn't like to smoke." A. Al rey no le quiere fumar. B. Al rey no le gusta fumar. C. El rey no gusta fumar. D. El rey no quiere fumar.

    asked by anon
  6. Physics- Pls help~review for test!

    A 10.0 kg box is pulled along a horizontal surface by a 40N force which is applied at a 30.0 degree angle. If uk = 0.3, calculate the acceleration of the box.

    asked by cr
  7. phyics

    Who will hear the voice of a singer first-a person in the balcony 50 m away from the stage (Fig. 22-19), or a person 2000 km away at home whose ear is next to the radio? Assume that the microphone is a few centimeters from the singer and the temperature is

    asked by ami
  8. Physics

    Find the amount of heat required to convert 10g of ice to steam at 110 degree Celsius.

    asked by Dabgadang
  9. physics

    work is being done when a force: a) is exerted while pulling a wagon up a hill b) acts vertically on a cart that can only move horizontally c) is exerted by one team in a tug-of-war when there is no movement d) of gravitational attraction acts on a person

    asked by kriti
  10. geometry

    A company logo is shaped like an equilateral triangle with 2-in.-long sides. What is the height of the logo? Round to the nearest tenth.

    asked by dx
  11. chemistry

    Gasahol is a fuel containing ethanol(C2H6O) that burns in oxygen (O2)to give carbon dioxide and water. a)How many moles of O2 are needed to completely react with 4.0 moles of C2H60? b) If a car produces 88g of CO2,how many grams of O2 are used up in the

    asked by Connie
  12. Biology

    Please help with this, What was it important to have a detailed growth curve for your test plant (which was a Lemna spp.) sample on a frequent basis grown under control conditions without a test chemical?

    asked by Sally
  13. science

    helium gas, 3.0 x 10-4 g dissolved in water, express this concentration in parts per million.

    asked by mell
  14. science

    an aluminium container of mass 100g contains 200 g of ice at -20'c heat is added to the system at the rate of 100 cal/sec. what will be the final tmperature of the mixture after 4 min? given:specific heat of ice:0.5 cal/gm'c ,latent heat of fusion:80

    asked by anu
  15. Math

    Miles said that he measured an angle of a regular polygon to be 130 degress. Explain why this result is impossible.

    asked by Allison
  16. Physics

    The center of a 1.50 diameter spherical pocket of oil is 1.20 beneath the Earth's surface. Estimate by what percentage directly above the pocket of oil would differ from the expected value of for a uniform Earth? Assume the density of oil is 800 kg/m^3.

    asked by Mandy
  17. Psychics

    A freight car is moving freely along a railroad track at 7.0 m/s and collides with a tanker car that is at rest. After the collision, the two cars stick together and continue to move down the track. What is the magnitude of the final velocity of the cars

    asked by Kendra
  18. chemistry

    If a car produces 88g of CO2, how many grams of O2 are used up in the reaction?

    asked by Connie
  19. Calculus

    The function f(x)=(x^4)-(10x^3)+(18x^2)-8 is continuous on the closed interval (1,8). Find the absolute minimum and maximum values for the function on this interval. Please help me!!! And please show your work so that i understand!! Thank you!!

    asked by Sam
  20. physics

    You are pulling your sister on a sled to the top of a 20.0 m high, frictionless hill with a 10.0° incline. Your sister and the sled have a total mass of 50.0 kg. You pull the sled, starting from rest, with a constant force of 127 N at an angle of 45.0°

    asked by sabeen
  21. chemistry

    A 2.30 mole quantity of NOCl was initially in a 1.50 L reaction chamber at 400°C. After equilibrium was established, it was found that 20.0 percent of the NOCl had dissociated: 2NOCl(g) 2NO(g) + Cl2(g) Calculate the equilibrium constant Kc for the

    asked by Anonymous
  22. physics

    You know your mass is 69 kg , but when you stand on a bathroom scale in an elevator, it says your mass is 78 kg. What is the magnitude of the acceleration of the elevator?

    asked by Mandy
  23. PHYICS

    Two 0.64 kg basketballs, each with a radius of 13 cm, are just touching. Ignore any other gravitational interactions. (a) How much energy is required to change the separation between the centers of the basketballs to 1.0 m? in J (b) How much energy is

    asked by Steve
  24. geometry

    The measure of a single angle in a regular octagon is (4x + 12)°. Find the value of x. Show equations and all work that leads to your answer.

    asked by Anonymous
  25. Physics

    What would be the orbital speed and period of a satellite in orbit 0.88 multiplied by 108 m above the Earth? Orbital Speed___m/s Period___s Thanks!

    asked by Lisa
  26. AN UNCERTAIN HORIZON

    At the Yalta Conference of 1945, the military situation favored A. Stalin. B. Churchill. C. Eisenhower. D. Roosevelt.

    asked by Anonymous
  27. Social Studies

    Have you ever noticed that the most important man in America every day when you are shopping, looking through your wallet, and even going to the bank? Well…the most important man in America is our 1st president George Washington, and he is on our one

    asked by S...
  28. chemistry

    In order to dilute 1L of 6M solution of NaOH to .5M solution, how much water must be added?

    asked by chris
  29. Chemistry

    Describe the dynamic equilibrium that exists in the two water tanks?

    asked by Anonymous
  30. Physics

    An equilateral triangle 100.0 m on a side has a m1 = 15.00 kg mass at one corner, a m2 = 75.00 kg mass at another corner, and a m3 = 120.00 kg mass at the third corner. Find the magnitude and direction of the net force acting on the 15.00 kg mass.

    asked by Bill
  31. physics

    A student sits at rest on a piano stool that can rotate without friction. The moment of inertia of the student-stool system is 4.6 kg m^2. A second student tosses a 1.5 kg mass with a speed of 2.9 m/s to the student on the stool, who catches it at a

    asked by nikki
  32. physics

    I'm making a graph of force vs stretch for springs. I have 7 data trials with the k (F = kx) ranging from 28 to 31, average is 29.6. Now I need to find the slope and write an equation for the graph. If I use the first two points to get the slope, I get a

    asked by Kriti
  33. PHYSICS

    A proton is traveling to the right at 231 km/s. It has a head-on perfectly elastic collision with a carbon atom. The mass of the carbon atom is 12 times the mass of the proton, what is the speed of proton after the collision?

    asked by Tanya
  34. Algebra

    Factor completely and then place the factors in the proper location on the grid. 4y2 + 25y + 6

    asked by jacob
  35. Statistics

    In planning a family of 4 children assume boys and girls are equally likely on each birth. Find (i) the probability distribution (ii) the expected number of boys (iii) the standard deviation of the number of boys.

    asked by Donald Crentsil
  36. world history

    The ancient Chinese phrase, "Mandate of Heaven" is most similar to the concept of

    asked by cheyenne
  37. english

    the characters nat hocken from the story "the birds by,Daphne du Maurier" and general zaroff from "the most dangerous game by, Richard Connell" must overcome internal foes as well as external monsters list and explain each character's internal conflicts.

    asked by savanna
  38. marketing

    Please refer to the following advantages and disadvantages: Advantages Little capital outlay Some control of operations Risks are shared and limited Local knowledge Disadvantages/Potential problems Limited contact with customers No direct control of

    asked by Trina
  39. physics

    A discus thrower (with arm length of 1.2 m) starts from rest and begins to rotate counterclockwise with an angular acceleration of 3.0 rad/s2. (a) How long does it take the discus thrower's speed to get to 4.5 rad/s? (b) How many revolutions does the

    asked by HELP!!!!
  40. Social Studies

    Does the following, need any changes. I yes what are they: Have you ever noticed that the most important man in America every day when you are shopping, looking through your wallet, and even going to the bank? Well…the most important man in America is

    asked by S...
  41. economics

    what does most economists believe about the future of business cycles?

    asked by yaz
  42. PHYSICS

    Two objects are connected by a massless string as shown in the figure below. The pulley is massless and rotates without friction. The object of mass m = 1.7 kg slides without friction on an inclined plane which makes an angle of è = 38° with the

    asked by Tanya
  43. geometry

    A rectangle has a diagonal 20 inches long that forms angles of 60 and 3o with the sides. Find the perimeter of the rectangle.

    asked by Victoria
  44. Microeconomics

    You own the Wizard of Oz on DVD. The opportunity cost of watching this DVD for the second time: A) is zero. B) is one half the cost of the DVD, as this is the 2nd time you have watched it. C) is the value the alternative use of the time you spend watching

    asked by lavern
  45. calculus

    an airplane flying due east at 400 km/h pasess over an airport 12 minutes before a second plane flying south 30 degrees west at 500 km/h.if the airplanes are at the same altitude how fast will they by seprating when the seccong pane is over the

    asked by tara
  46. please help me

    The hemophilia gene is located 12 map units from the red-green colorblindness gene on the X chromosome. Red-green colorblindness is recessive to normal color vision. A woman with normal blood clotting and normal color vision, but whose father was a

    asked by jenna
  47. Physics

    Two men decide to use their cars to pull a truck stuck in mud. They attach ropes and one pulls with a force of 972 N at an angle of 28 degrees with respect to the direction in which the truck is headed, while the other car pulls with a force of 1401 N at

    asked by Joshua
  48. Geometry

    A triangle has two congruent angles and an exterior angle with measure 100. Find two possible sets of measures for the angles of the triangle.

    asked by Timm
  49. physics

    The engine weighs 4500 newtons and it is lifted 1.5 meters up by the block and tackle system. The mechanic must apply a force of 225 newtons while pulling a total of 37.5 meters of chain through the block and tackle pulley system. What is the work done by

    asked by jay
  50. history

    I need help writing an acrostic poem about benjamin franklin

    asked by john
  51. geometry

    find the surface area of the figure below. A cylinder which has a hemisphere on one side of cylinder and radius is 5 and the hight is 8.

    asked by zivar
  52. chemistry

    calculate the mass of silver chloride and dihydrogen monosulfide formed when 85.6g of silver sulfide reacts with excess hydrochloric acid.

    asked by araceli
  53. math

    express 4ez^2(4e-z)as a binomial

    asked by Anonymous
  54. English

    1. I have not made up my mind yet. 2. I have not decided yet. 3. I have not determined yet. 4. I have not made a decision yet. 5. I have not made a determination yet. (Are they all the same?)

    asked by rfvv
  55. PHYSICS

    As part of a daring rescue attempt, the Millennium Eagle coasts between a pair of twin asteroids, as shown in the figure below where d1 = 2.97 km and d2 = 1.49 km. The mass of the spaceship is 2.57 107 kg and the mass of each asteroid is 3.15 1011 kg. If

    asked by Steve
  56. Chemistry/Elements

    What is needed to have Nitrogen and Lithium react?

    asked by Vince
  57. geometry

    a globe of the earth measures 12 inches in a diameter. calculate the surface area and volume of this globe

    asked by Anonymous
  58. geometry

    In the parallelogram above, line segment AE equals 12 mm. Line segment BE equals 16 mm. What is the length of line segment CD in the parallelogram above?

    asked by kyle
  59. art

    i need to check these answers please ome one help me i need them to graduate...please please... Questions 1–20: Select the one best answer to each question. 1. Which of the following hotel rates is generally available to business travelers? A. The family

    asked by annastacia kirk
  60. Financial Data and Choosing stocks

    Now that you’ve analyzed a company based on its financial statement, let’s compare two companies. Choose two related companies to answer the questions below (for example: Toyota & Honda, Apple & Microsoft). Questions: 1. What two companies did you

    asked by Anonymous
  61. chemistry

    The temperature of a 4.00 L sample of gas is changed from 10.0 C to 20.0 C. What will the volume of this gas be at the new temperature if the pressure is held constant?

    asked by Samantha :)
  62. 4th grade math

    Find a rule that gives the third number from the first two numbers. Fill in the blanks.....10, 4, 5, ? 15, 7,7, ? 19,9,?

    asked by Kristin
  63. Anonymous

    Maya is going to rent a truck for one day. There are two companies she can choose from, and they have the following prices. Company A charges and allows unlimited mileage. Company B has an initial fee of and charges an additional for every mile driven. For

    asked by Anonymous
  64. Chemistry

    when sulfur is burned in the presence of oxygen, sulfur trioxide is produced. if 3.4 x 10^24 atoms of sulfur react, how many liters of sulfur trioxide are produced?

    asked by Maggie
  65. US History

    Hello! I have an assignment where I have to rewrite the Bill of Rights in modern english. I've been able to do most of them, but I'm stumped on the 9th amendment. "The enumeration in the Constitution of certain rights shall not be construed to deny or

    asked by Blair
  66. MATH

    A circle is centered at (2, -5) and has radius 3. Write its equation in standard form.

    asked by Asher
  67. probability

    A jar contains 3 red balls and 2 green balls. You draw one ball at random. Determine the probability of selecting a. red b. green c. blue d. red or green

    asked by Evangelina
  68. Geometry

    To name each figure below, use as many of the letters A, B, C,...as you need, in order, starting with A. For each figure, how many letters do you need? With this labeling, how many different ways can you name the figure? a. a triangle b. a quadrilateral c.

    asked by Shimmy Jimmy
  69. english

    I need to find this article named "relationship skill critical for building professional relationship" and write 2pgs about it, however I cant seemed to find it online. can you plz tell me where I can find it. I apperciated it, thanks!

    asked by niiku
  70. physics

    I need formula/problem set ups for the following 2 problems: 1)Find The work done by the force in pulling an object on an inclined plane from A to B (ground level to top): Length of incline (like a hypotenuse): 30 m Height of incline (y axis): 10 m Force =

    asked by Sejul
  71. computers

    You’re as IS professional, and your boss has asked you to prepare a briefing for senior staff on the comparative advantages and disadvantages of three competing tape drive technologies: Digital Linear Tape (DLT), Advanced Intelligent Tape (AIT), and

    asked by pinky
  72. Algebra II

    I first want to make it clear that I have only taken Geometry, Algebra I, and pre-Algebra. That seemed to clear things up last time. Question: Matt bought a car at the cost of 25,000 dollars. This car's value goes down 15% every year. 1. What is the decay

    asked by Anon
  73. physics

    Suppose partial melting of the polar ice caps increases the moment of inertia of the Earth from 0.331MR^2 to 0.332MR^2. What is the change in length of day in seconds?

    asked by nikki
  74. Computer Science

    Babbling Brooks A series of streams run down the side of a mountain. The mountainside is very rocky so the streams split and rejoin many times. At the foot of the mountain, several streams emerge as rivers. Your job is to compute how much water flows in

    asked by Anonymous
  75. elemenatry ed

    Are there any absolutes regarding rights and wrongs in the K–8 educational setting?

    asked by wj
  76. History

    My question was pretaining to the culture of the 1920's. I need to the question answered in what ways did the automobile change American culture during the 1920's? Henry Ford came out with the Model T and how was he able to succeed to a degree far beyond

    asked by David
  77. chemistry

    Name the following compounds (with absolute configurations) and are they enantiomers, diastereomers or structure isomers or no relation at all? img34.imageshack.us/i/namethese.jpg/ i think they are disteromers and their names are 1] 1S, 2S - (2-bromo - 3,4

    asked by ben
  78. statistics

    A random sample of n=36 scores is selected from a population. Will this have a definite normal distribution?

    asked by Leticia
  79. english grammar

    please help me if my letter is correct in the grammar. kindly help me to make a good letter. march,21,2011 subject:sales commission to: THE MANAGER DEAR SIR, I am writing to you due to next month will be my annul vacation and,I would like to ask a favorale

    asked by jessie
  80. Spanish

    I have to write a basic paragraph describing myself for Spanish class. I have translated it several times on several different sites, but I'm still not sure if it is correct. Something seems wrong.. I would greatly appreciate any corrections. My name is

    asked by Lace
  81. calculus

    solve the initial value problem by separation of variables dy/dx=y^(2)+1, y(1)=0

    asked by james
  82. calculus

    solve the differential equation by seperation of variables 3. dy/dx=e^(2x)/4y3

    asked by steve
  83. chemistry

    calculate the molecular formula of a compound with vapor density of 30 having 40% carbon, 6.67% of hydrogen and the rest is oxygen.

    asked by Anonymous
  84. microecon

    Y= consumption X= Disposable income Y X 5,000 10,000 A 8,000 20,000 B Refer to info above. The slope of the line between points A and B is: A) .3 B) 2.3 C) 3.3 D) indeterminate from this information. How do you figure this out. What is the math to

    asked by lavern
  85. chemistry

    find the concentration of HCL if the pH of the solution is 0.50

    asked by Jessica
  86. geometry

    The perimeter of a kite is 24 I'm tring to find the the sides the kite 4cm less than 3 times the length of another

    asked by tim
  87. chemistry

    How many mL of 5.00% (w/v) solution are needed to make 100mL of physiologic saline (0.90%(w/v) sodium chloride)?

    asked by bob
  88. Maths

    Find the nine values for x ( in radians) with 0=/< x

    asked by 07
  89. trigonometry

    what is the diameter of three circle inscribed in a triagle whose base is 50 cm.

    asked by jen
  90. Personal Income Tax

    Here is my homework problem that I need some help with: "A taxpayer is considering selling 100 shares of stock. The current market price is $7,500. Which shares should the taxpayer instruct the broker to sell, and what are the tax consequences of this

    asked by Brook
  91. algebra

    Use the five steps for problem solving to answer the following question. Please show all of your work. The volume of a rectangular slab of concrete needs to exceed 72 cu. ft. If the length is 12 feet and the width is 8 feet, how thick does the concrete

    asked by Anonymous
  92. amet

    PART A 1. The acceleration of a body along a straight line is given by (a = 2 (ms-3) t -10 (ms-2). Initial position is 1.8 m and initial velocity is 15 ms-1. Determine the position of the particle, the total distance travelled and the velocity after 12

    asked by noorul
  93. Chemistry

    EEG, PET, and TMS are all: (Points: 5) laboratory observations that introduce experimenter bias into the study. descriptive methods for studying the brain. standardized methods for studying the brain. experimentally controlled technologies for brain-wave

    asked by Chloe
  94. math

    two-fifths of the voters already prefer candidate x. if he took money from a political action committee to buy television time, a third of those who do not now prefer him would be convinced to vote for him. But he would los the support of a fifth of those

    asked by kendra
  95. Calculus!

    For the function y=(e^2x)+(3x)-(10), use Newton's method and the calculator method to find the x value for which y=15. Please show your work so that I can understand the question! Thank you so much!! it means alot!!

    asked by Sam
  96. Differential equation- Math

    Find the general solution of the following system of equation? Please help, i don't know what to do... dx/dt = 3x +2y +2z dy/dt = -5x - 4y - 2z dz/dt = 5x + 5y +3z.

    asked by katie
  97. English project question.

    I'm doing a English project on Sir Thomas More, and I had to make a movie maker project, so we have a choice of what music to play. The movie maker project is all about his life, teachings, and his writings, basically. What song should I use? Or any idea

    asked by Allyson
  98. chemistry

    What volume will 73g of dry ammonia gas occupy at 11 degrees C and 720 mm HG? How uch air is needed to dilute the ammonia to 10ppm?

    asked by ann
  99. math

    d/dx(e2x-3)find indicated derivative and simplfy

    asked by Renee
  100. calculus help.Pleaseee(thankyou guys for helping

    Your Open QuestionShow me another » Calculuss homeworrk heelp? A rocket is being tracked from a radar post that is 10 km from the launch pad.the rocket arises vertically at a height of 17.32 km and then turns at an angle of 30 degrees fron the vertical

    asked by tara
  101. Calculus

    Find the intervals where the function f(x)=((2x-1)^2)(x-3)^2 is concave up and concave down and find all inflection points. Give decimal answers using two decimal place accuracy. Please help me!!! I really don't understand! and please show your work so

    asked by Sam
  102. probability

    A jar contains 3 red balls and 2 green balls. You draw one ball at random. Determine the probability of selecting a. red b. green c. blue d. red or green p.s: the reason I am asking this questions is because we never learned about it in class and I don't

    asked by Evangelina
  103. english grammar

    please help me if my letter is correct in the grammar. kindly help me to make a good letter. march,21,2011 subject:sales commission to: THE MANAGER DEAR SIR, SIR,I AM WRITING YOU DUE TO NEXT WILL BE MY ANNUAL VACATION AND I WOULD LIKE TO ASK A FAVORABLE

    asked by jessie
  104. chemistry

    a process stream containing acetone vapour in nitrogen enters a cooler compressor at 65 degree celcius and 1 atm, with relative saturation of acetone equal to 50%. the gas is compressed and cooled to 20 degree celcius to recover 95% of acetone as a liquid.

    asked by alicia
  105. algebra

    Brandon is buying a car. The monthly payment p for the car varies directly with the amount borrowed b. Suppose that the dealership tells him that if he borrows $15,000, her payment will be $293.49. What would be her payment if she borrows $18,000? (round k

    asked by Megan Watt
  106. trigonometry

    please me to answer this question.because i will pass this coming monday march 21,2011.fin the diameter of three circle inscribed in a triangle. whose base is 50 cm.

    asked by jen
  107. math

    hi i startted the problem below by writing a sigma notation of sigma[(2^(n+1))/((n+1)!)] QUESTION: how do i find the sum of 2+(4/2!)+(8/3!)+(16/4!)+... was my attempt wrong, or how do i go from here? thank you!

    asked by kiksy
  108. algebra 2

    The stopping distance d of a car after the brakes are applied varies directly as the square of the speed r. If a car travelling 70mph can stop in 270ft, how many feet will it take the same car to stop when it is travelling 60mph? Thank you.

    asked by Esther
  109. social studies

    where are the major wheat-producing areas of the world

    asked by annoumous
  110. Calculus!!!

    Find the (x,y) coordinates of the infection point on the graph of f(x)=900/1+(5e^-x) Use your calculator to give your answers using 2 decimal place accuracy. Please help me!!!!!!! You don't know how much it means to me!! Thank you!

    asked by Sam
  111. social studies

    how much wheat is produced by the countriesthat produce the most wheat

    asked by kay
  112. math

    how to do a problem solving stratigy of making a table/find a pattern

    asked by shasha
  113. chemistry

    what is the concentration in percent volume of 60mL or methanol in a total volume of 500mL

    asked by Alex
  114. algebra

    What is 4,756 divided by 32? I got 148.625 please confirm?

    asked by Jeannie
  115. physics

    30N 60degrees horizontal and vertical components

    asked by zimbawae
  116. Chemistry

    We're learning about single displacement reactions. What happens when Mg + Zn two nitrate reacts? And when Al + Zn two nitrate reacts? Are there colour changes or precipitates formed?

    asked by Mar
  117. algebra

    x=3/2y+5 2x-3y=8 How would you solve

    asked by Megan Watt
  118. chemistry

    you must prepare 300 mL of .750M NaBr solution using 2M NaBr stock solustion. how many mL of stock solution should you use?

    asked by abby
  119. trigonometry

    please me to answer this question.because i will pass this coming monday march 21,2011.fin the diameter of three circle inscribed in a triangle. whose base is 50 cm.

    asked by jen
  120. English

    I left out the questionnaire I really need you to check. I have to refer to what happens in America. 1)You can get a part-time job when you are..You can ride a 50cc moped when you are......You can't leave school until you are......You must be ......to join

    asked by Mike
  121. algebra

    y=-x-9 what is the solution

    asked by bianca, pleeease help i'm lost
  122. physical sciece

    aA player uses a hockeey stick to incease the speed of a 0.200 kg hockey puck by 6 m /s in 2 seconds. (A)How much dd the hockey puck accelerate? (B)How much force was exerted on the pack? (C)How much force did the puck exert on the hockey stick.

    asked by shantae
  123. algebra

    what is the simplest radical for for 6 time root 72

    asked by Evangelina
  124. science

    A 500 kg truck moving at 30 m/s strikes a parked 300 kg car. They connect together and move forward. (A) What kind of collision is this (elastic or inelastic)? (B) What is the momentum of the truck before it strikes the car? (C) What is the speed of the

    asked by shantae
  125. Functions

    Could someone please tell me the answer to this ques; (ln 243 - ln 18.3)/6=?

    asked by Stailin
  126. 8th grade Math

    This four-leaf clover consists of four coplanar circles. Each circle is externally tangent to two others, as shown. The two smaller circles are congruent, and the two larger circles are congruent. A square is constructed such that each of its four vertices

    asked by Anonymous
  127. 8th grade math

    Albert has a home screen printing business. He has designed a bracelet and T‑shirt for St. Patrick’s Day which both use a special ink, available for a limited time from his supplier. Albert has already begun taking and fulfilling orders for

    asked by Anonymous
  128. math

    The property restoration company puroserv is considering switching to new dehumidifiers. Their market research considering the cost of the new machines and their efficiency tells them that's them switch would give them an 80% chance of making a 20, 000

    asked by Kam
  129. English

    Though I specialized in Germanic languages, I need to present (in a very simple way using a very simple language) some scientific topics in English to Italian 18-year-old-students (studying applied sciences) whose English is very poor. I'm seeking internet

    asked by Mike
  130. biology/science

    when an indigestion tablet is placed in water, carbon dioxide is given off. describe the test for carbon dioxide.

    asked by zeke
  131. statistics

    A population is normally distributed with a mean of 40 and a standard deviation of 6. For samples of size 10, what is the probability that the sample mean will be more than 42?

    asked by anne
  132. Gr.11 Chemistry

    Is this right? Balanced: 3 Mg(s) + 2 Al(NO3)3(aq) = 2 Al(s) + 3 Mg(NO3)2(aq) Total Ionic Equation: 3 Mg(s) + 2 Al +3 (aq) + 6NO3 -1 (aq) = 2 Al(s) + 3 Mg+2 (aq) + 6NO3 -1 (aq) Net Equation : 3 Mg(s) + 2 Al +3 (aq) = 2 Al(s) + 3 Mg+2 (aq)

    asked by Kwan
  133. math

    the perimeter of a paved area being built at a playground is going to be 46 meters. if the length and width are each a whole number of meters, what should the length and width of the area be to cover the greatest possible area? draw a picture and make an

    asked by nee nee
  134. Calculus! Please help me!

    A person on a bicycle is 100 meters west of a person in a car. the person on the bike starts to ride at 8 meters per second directly east and at the same time the person in the car starts to drive directly north at 18 meters per second. Write the distance

    asked by Sam
  135. English

    Can you please check these ideas on stress and young people, please? Thank you vey much for helping me finding an excellent site on science!! 1) The two things teenagers are most stressed about are how to make new friends and how to improve their school

    asked by Mike
  136. Health Care

    Why is it when ever someone ask for help someone thinks they are cheating? If I wanted to cheat I would let soeone else do the work. All I want is a formula or example to follow so I can figure this out for myself!!!!!

    asked by Marie
  137. Calculus (pleas help!)

    For what values of k is lim x -> INF coshkx/sin2x finite? (Enter your answer as an interval or list of intervals, for example, (-infinity,3], (5,7). Enter none if no values of k will work.) Please help..

    asked by Abi
  138. Pre-Calculus

    what is the range of each of these equations? 1. 4sin(3x-1)+4 2. -4sin(-3x+1)-4 3. 2sin(1.5x+.5)+2 4. -2sin(-1.5x-.5)-2

    asked by Bethany
  139. economics

    Explain why economic policies aimed at stabilization can actually increase, rather than decrease, the magnitudes of economic fluctuations.

    asked by lost
  140. algebra

    Is this statement true or false? It is possible to solve a variation problem without a constant of proportionality.

    asked by Candice Watt
  141. algebra

    Find the values for the following function: f(x)=-3x+5 a)f(-3) b) f(-x) c)-f(x) d)f(x-3) e)f(x+a)

    asked by Megan Watt
  142. math

    A gun is fired from a bunker of 2m deep with an initial velocity of 500m/s at an angle of pi/6 a) Find the parametric equations of the position of the projectile b) Find the range of the projectile to the nearest meter. c) Find the maximum height of the

    asked by Sandy
  143. chemistry

    hello, I am trying to find an answer for cooling H2O2 in synthesis of hexaamminecobalt(III) chloride but did not cooled H2O2 for the synthesize pentaamminechlorocobalt(III) chloride..

    asked by hayrus
  144. trigonometry

    please me to answer this question.because i will pass this coming monday march 21,2011.fin the diameter of three circle inscribed in a triangle. whose base is 50 cm.

    asked by jen
  145. math

    32 is _____ % of 100? 3 is 5% of what number?

    asked by bryan
  146. Grammar

    If you want to wait, Ms Hobson will meet with you in a few minutes. What is the infinitive "to wait" in this sentence? Is it a noun, adjective or an adverb?

    asked by Lisa
  147. Physics/Chemistry

    How do I understand what Quantum Dots are? I read Wikipedia, but the description seems a little over my head? Can I get a simpler explanation of this? or a pointer to some where I can read this?

    asked by Sean
  148. Spanish

    La class de matematicas/la class de arte/tan interesante como

    asked by Henrry
  149. algebra

    a roof rises 1.3 feet vertically and 13.1 feet horizontally. wgat is the grade of the roof?

    asked by Marie
  150. Science

    The brain can be studied by using: (Points: 5) electrical, biochemical, and magnetic means. radio frequencies, computers, and neurotransmission. neurotransmitting, electrical, and biochemical means. biochemical, neurotransmitting, and magnetic means. i

    asked by Chloe
  151. math

    hi i startted the problem below by writing a sigma notation of sigma[(2^(n+1))/((n+1)!)] QUESTION: how do i find the sum of 2+(4/2!)+(8/3!)+(16/4!)+... was my attempt wrong, or how do i go from here? thank you!

    asked by kiksy
  152. inequality

    Janice and Leonard together would like to save more than $3,500. They have saved $425 saved so far. Janice can save $120 more than twice what Leonard can save each month. How much money will they each need to save to reach their goal?

    asked by lisa
  153. Second Grade Fractions

    4/6 of 18 is ?

    asked by Rosie
  154. math

    riddle:double my tens digit to get my ones digit. double me and i am less than 50.

    asked by jan
  155. English

    Can you please help me complete the fill-in-the-blank activity, please? I'm not sure if the rules in America are the same as in England. 1)You can get a part-time job when you are 15 years old. You can ride a 50cc moped when you are 14 years old. You can't

    asked by Mike
  156. Geometry

    The sum of the measures of the angles of a polygon with n sides is given. Find n. 32) 180 33) 1080 34) 1980 35) 2880

    asked by Matthew
  157. pre-calculus

    suppose g(t)=kf(t). Find the average rate of change of g over the interval [a,b] in terms of f

    asked by Olivia
  158. science

    rosie tried to use a maganet to stick a memo on to her mirror it would'nt stick. explain why!

    asked by chloe
  159. math

    median: find 3% of 80 answer:2.4

    asked by pavleen
  160. differential equations

    solve the differential equation by seperation of variables 5. y'=xy/2ln y

    asked by cathy
  161. BIOO pleasee help u guys are angellss!!!

    why is there no production of ATP when detergent is treated in a test tube with mitochondria? in Aerobic and anaerobic respiration what is the final metabolic breakdown of molecule? 1 pyruvic acid 2 acetyl coenzyme A 3 citric acid 4 reduced coenzyme FADH2

    asked by sabrina
  162. English - Native speakers

    Need some explanations about the articles! Why do we say I love Italian food and not the Italian food Why do we say I leave home at 3 and not I leave the home why do we say I go to bed at 11 and not I go to the bed at 11

    asked by Mark
  163. math

    simplify 4+17+(-29) + 13 + (-22)+ (-3)

    asked by pavleen
  164. physics

    10 k r point g point degree

    asked by Sandra
  165. Calculus (pleas help!)

    For what values of k is lim x -> INF coshkx/sin2x finite? (Enter your answer as an interval or list of intervals, for example, (-infinity,3], (5,7). Enter none if no values of k will work.) Please help..

    asked by Abi
  166. Financial Data and choosing stocks

    5. Click on the Show Chart link to the right of the company name and description. Select the monthly share price graph and take a screen shot. Include the screen shot in your submission. Describe what has happened to the share price in the last year I

    asked by Anonymous
  167. physics

    How far will a car moving at 50 miles an hour travel in the time it takes to sneeze?

    asked by Joe
  168. Calculus! Please Help!!

    The dollar value of a stock x weeks after a change in management is give by the function: f(x) = x²-14x+30ln(x+1)+32, 0≤x≤7. Find the intervals when the value of the sock was increasing and also determine the maximum value of the stock during this

    asked by Sam
  169. biology /help

    . The hemophilia gene is located 12 map units from the red-green colorblindness gene on the X chromosome. Red-green colorblindness is recessive to normal color vision. A woman with normal blood clotting and normal color vision, but whose father was a

    asked by jenna
  170. math

    Jerry has 76 quarter.How much dollars do he has? I said the answer is either $19.00 or $76.25 which one is correct Thank you

    asked by Xavier
  171. BIOO

    why is there no production of ATP when detergent is treated in a test tube with mitochondria? in Aerobic and anaerobic respiration what is the final metabolic breakdown of molecule? 1 pyruvic acid 2 acetyl coenzyme A 3 citric acid 4 reduced coenzyme FADH2

    asked by sabrina
  172. Biology

    why is there no production of ATP when detergent is treated in a test tube with mitochondria? in Aerobic and anaerobic respiration what is the final metabolic breakdown of molecule? 1 pyruvic acid 2 acetyl coenzyme A 3 citric acid 4 reduced coenzyme FADH2

    asked by sabrina
  173. algebra

    Is this statement true or false? The constant of proportionality, k, in the direct variation model y=kx is the slope

    asked by Candice Watt
  174. thank you,write teacher for helping my letter

    thank you very much.

    asked by jessie
  175. English

    Can you please help check these sentences I wrote about adjective and past participles. Thank you. 1)I'm as pleased as Punch. 2) Your project is excellent.I'm pleased/happy/satisfied/content (are they all synonyms, did I include all?). 3) This song is so

    asked by Mike
  176. algebra

    Which of the following are liner? Explain a) y + -2/3x b) y=1/x c) y=x(to the second power)+8x+15

    asked by William
  177. Improving your Voice

    What are some good methods to improve on your voice? Ive heard that drinking green tea is good for your voice, and drinking water is also good, anything else?

    asked by Anonymous
  178. pyschology

    The outlawing of slavery and extending voting rights to women seem to indicate that ethics can have beneficial results.

    asked by Laverne
  179. chemistry

    hello, I am trying to find an answer for cooling H2O2 in synthesis of hexaamminecobalt(III) chloride but did not cooled H2O2 for the synthesize pentaamminechlorocobalt(III) chloride..

    asked by hayrus
  180. English

    Hello. Please help me to choose the correct word order: 1)equivalent-lacking English neologisms; 2)English equivalent-lacking neologisms. Meaning: new words which have no equivalents in other languages. Thank you very much.

    asked by Ilma
  181. chemistry

    determine the quantity of NaOh whose percentage is 15 % to balance 176 g of H2SO4

    asked by auro
  182. materials engineering

    for: prismatic non-circular section channel which used for window frames and for ducting for electrical wiring..I need to know : 1-function 2-objective 3-constraints how can we select the materials for this design, and why? what suitable processes for

    asked by hym
  183. general

    A tragedy hits a small town. The elementary school explodes into flames trapping several classes of second graders. Because the volunteer fire department will take too long to get there, teachers and classified staff remove all the children to safety

    asked by Chloe
  184. physical science

    As the number of carbon atoms in the compound increases, what pattern do you see in the boiling points? What general pattern do you see in the melting points?

    asked by deedee
  185. scifi

    wats da moon phases for the past 10 days

    asked by real
  186. social studies

    How did the industrial revolution affect ri today

    asked by SARA
  187. math

    What would the measurements be using the 1/4 in.= 9 ft to represent a 27 ft square?

    asked by Rich
  188. Science

    A car of mass 900kg moves at 10 m/s. what is the braking force required to stop the car in a time of 5 seconds?

    asked by shantae
  189. marketing

    kidly please can anyone help me to give an idea about this question for my subject since i could not explain well.thank you so much. what does it mean publics demand to elaborate.... q.distinguish betwee consumer and publics demand. i just want to have an

    asked by jessie
  190. algebra 2

    Solve the following for the variable x. (7/x-2)+(1/x+2)=(3x/x^2-4) Thank you.

    asked by Esther
  191. computer science

    Should the navigation elements in multiple locations on a page be identical? Why or why not?

    asked by unknown
  192. math

    (2r+s)14sr= 28rs

    asked by pavleen
  193. math

    (2r+s)14sr= 28rs

    asked by pavleen
  194. arithmetic math

    if b=15 and c=6700 and b= 17 and c=7500 what is c if b=0

    asked by Anonymous
  195. Science

    How do you reverse the expirement of a Iron Nail which is placed into a cup of Copper Sulfate????

    asked by :)
  196. math

    mean 18,25,32 answer:25

    asked by pavleen
  197. physical

    the density of mercury is 13.3 g cm-3. what is its D in kg m-3 and standard form?

    asked by Anonymous
  198. English

    Is that correct to say: If he were she (or in her place) , h'd get a racer? Thank you very much fr your help and information!

    asked by Mike
  199. NU

    The end of a thin glass-wall tube with an inside diameter of 1-mm is inserted into a reservoir of pure water with a temperature of 25 degree C. What is the surface tension (adhesoin) force on the water inside the tube? To what height will the water rise in

    asked by LaToya
  200. math

    simplify 4+17+(-29) + 13 + (-22)+ (-3)

    asked by pavleen
  201. calculus

    y'=xy/2ln y how do you solve the differential equation by seperation of variables

    asked by smiley
  202. math

    Marissa has budgeted $65 for her mothly cell phone expense. If her plan with her wireless provider is $15 plus $0.25 for each minute, how many minutes can she talk on her cell phone in a month and not exceed her budget?

    asked by Didi
  203. Psycology

    Psychology and Health Problems Paper

    asked by Anne
  204. world history

    Among early hunting and gathering peoples, the commonly occurring mark that looks like a "P" is thought to stand for a

    asked by cheyenne
  205. business law

    If you were forming a business entity and had no intent to go public (sell stock on the stock exchanges), what form would you use and why?

    asked by Crystal
  206. music/voice

    how can i learn to sing like the concordia choir on my own

    asked by Anonymous
  207. English

    Can you please help me formulate the questions better and answer the last two yourself? Thank you very much. 1) I quarrelled (argued) with my best friend because I refused to let her copy the maths test (from mine?). 2) She is cross/furious with me now.

    asked by Mike
  208. math

    +15 + -20=

    asked by michael
  209. english

    The American Dream in the Great Gatsby through the use of setting? Please write one example. I thought the parties was one.

    asked by Amy
  210. math

    find all numbers that divide 100 with a remainder of 4. what is the largest 2-digit divisor that can divide 100 and still have a remainder of 4? find all #'s that divide 216 with a remainder of 6.

    asked by anna
  211. Engish

    I'm finding it difficult to write the instructions for a strawberry salad. (Can you say it in English)? Thank you very much for your help. 1) Remember the most common non-reflexive verbs in English through this story. 2) Which are considered as low marks

    asked by Mike
  212. math

    jake has 3/4 of a dollar. maxwell has 1/10 of a dollar. do they have more or less than $1.00 in all

    asked by joey
  213. Math

    What is the circumference of a circle that has a radius of 70ft?

    asked by Charlene
  214. 8th grade Math

    Another four-leaf clover also consists of 4 coplanar circles. The large circular leaves are externally tangent to each other, as well as to each of the smaller circular leaves, which are also congruent to one another. The radius of the large and small

    asked by Anonymous
  215. math

    mean 18,25,32 answer:25

    asked by pavleen
  216. cis 115

    So what logic is used when pseudocoding compound conditions

    asked by adam
  217. Math

    A 8 cubic rectungle

    asked by Torie
  218. Math

    What is the formula for the area of a triangle and trapezoid?

    asked by Andrew
  219. english

    what would be a disillusionment using setting in the Great Gatsby?

    asked by Amy
  220. Math

    Is this statement true or false? The following proportions will yield the same results: x/2=4/9 and 9/2=4/x

    asked by Keenan white
  221. Soc-120

    I have to write a paper and I am short of words. Maybe you can help me? I am stuck on some consequences of modernization? Is there anyway you can give me some examples that I can write about? Thank You,

    asked by Nikol
  222. math

    how to do a problem solving stratigy of making a table/find a pattern

    asked by shasha
  223. math

    how to do a problem solving stratigy of making a table/find a pattern

    asked by shasha
  224. Email question

    Is there any way I could email a tutor and send them a copy of my essay so they can proofread it for me?

    asked by Allyson
  225. math

    what percent is 14 of 132

    asked by Loretta
  226. Social studies

    What was so important about Ghana? If anyone can help,thank you(:

    asked by Bluestarr
  227. science

    what material reflects the least amount of sunlight ?

    asked by jenny
  228. English

    I forgot to include the following words. Thank you.I need help for the questionnaire, too 1)Which household chores are most popular among American teenagers? Can you see if I wrote them right? (put the rubbish out, sweep and mop the floors, take the bed

    asked by Mike