Questions Asked on
April 13, 2012

  1. english

    The shed held a (motley) supply of gardening tools. choose the letter of the word or phrase that best matches the () word outdated decomposing varied (my choice) small please help small

    asked by kevin
  2. Physics

    2. A pool has an area A = 50 m2 and depth h = 2.5 m. The pool is filled with water to the maximum height. An electrical pump is used to empty the pool. There are two pipes coming out the pump: one is submerged into water has a radius r1 = 4 cm the other

    asked by Sean
  3. physics

    The angle through which a rotating wheel has turned in time t is given by \theta = a t - b t^2+ c t^4, where \theta is in radians and t in seconds. What is the average angular velocity between t = 2.0 s and t =3.5 s?

    asked by Anonymous
  4. Chemistry

    How much limestone in kilograms is required to completely neutralize a 3.8 x 109 L lake with a pH of 5.5?

    asked by Cloey
  5. ENGL-1020

    Please help me figure this out! What is he trying to say/What is this poem's meaning? Why did he write it? How does the denotation, connotation and/or level of diction found in the majority of the italicized words play against the level of diction found in

    asked by Witchita
  6. math

    Please explain to work this: A rocket is launched from atop a 105-foot cliff with an initial velocity of 156ft/s. the height of the rocket above the ground at time t is given by h= -16t^2 + 156t + 105. When will the rocket hit the ground after it is

    asked by Mary
  7. math

    Suppose a forest fire spread in a circle with radius changing at a rate of 5 feet per minute. When the radius reaches 200 feet, at what rate is the area of the burning region increasing?

    asked by Sandra Gibson
  8. psychology

    Which of the following best demonstrates the goal of congnitive therapy? I think therefore I am (maybe) A fool sees not the same tree that a wise man sees A musician must make music an artist must paint a poet must write if he is to be at peace with

    asked by kevin
  9. Accounting

    At the beginning of April, Owl Corporation has a balance of $12,000 in the Retained Earnings account. During the month of April, Owl had the following external transactions. 1. Issue common stock for cash, $10,000. 2. Provide services to customers on

    asked by John
  10. Desperate to understand ionic/net equa.-Chemistry

    When the following solutions are mixed together, FeSO4 (aq) + Csl (aq): What precipitate if any will form, Write the balanced equation, write the complete ionic equation and write the net ionic equation?

    asked by ASA
  11. geometry

    The area of a regular decagon is 50cm2. What is the area of a regular decagon with sides four times the sides of the smaller decagon?

    asked by Matt
  12. grammar

    ( The Gift of the Magi ) is O.Henry's most famous short story. should the () be italized or in quotation marks I think quotation marks please help

    asked by kevin
  13. Algebra 2

    Find any points of discontinuity for the rational function. 1. (x + 6)(x + 2)(x + 8) y = _____________________ (x + 9)(x + 7) 2. x - 8 y = _____________________ x^2 + 6x - 7

    asked by Mr. Sandwich
  14. precal

    A cell phone company’s profit is modeled by the function p(x) = 10x − x2 − 1, where p is expressed in thousands of dollars and x is the number of phones sold in hundreds. How many phones must the company sell to make a profit of more than $15,000?

    asked by laura
  15. physics

    Three concentric metallic sphere shells of radii R,2R,3R are given charges Q1,Q2,Q3 respectively. It is found that the surface charge densities on the outer surfaces of the shells are equal. What is the ratio of the charges given to the shells Q1,Q2,Q3?

    asked by sarthak
  16. chemistry

    What is the limiting reactant of 4000 grams of heptane is combusted with 7000 grams of oxygen?

    asked by bob
  17. poli sci 150

    One important cause of the United States' two-party system is a) single-member electoral districts b) proportional representaion c) the Constitution's requirement for bipartisanship in Congress d) internal mobilization e) multimember electioral districts

    asked by tina
  18. physics

    A truck of mass 2000kg travelling due south collides at an intersection with a car of mass 1200kg travelling due east. The car and truck become entangled and move off to the south-east. The truck driver claims to have been travelling at exactly 60km/hr(the

    asked by Lycra
  19. cochise

    How many kilocal are required to increase the temperature of 15.6 g of iron from 122 °C to 355 °C? The specific heat of iron is 0.450 J/g °C

    asked by Emily
  20. math

    On a map, the length of a nature-center trail is 10.8 centimeters. If the scale is 3 centimeters to 20 kilometers, what is the actual length of the trail.

    asked by theresa
  21. Can' t Figure Out: Math

    Write as percent. a) 19/50 c) 0.237 Write as decimal. b) 3/8% e)4 3/4%

    asked by Henry N
  22. Math 7 - NYS Math Exam Review - Book 1 (HW)

    C = 2nr!?!??!??! Since the NYS Math Exam is coming up (in my district in my school we have it next week). You see in my class were not done with our geometry and ratio, proportion unit and plus we are missing one unit: algebra. We didn't get to solving the

    asked by Laruen
  23. physics

    As more branches are added to a parallel circuit, the overall resistance of the circuit does which of the following?. A) remains the same.B) definitely decreases.C) definitely increases.D) may increase.E) may decrease.

    asked by britches
  24. english story

    From Emperor to Citizen: The procession was temporarily abolished because of the emperor's interest in? wars viands bicycles poisons -- prepared food only for the sake of appearances. the imperial kitchens the high consorts his mother eunuchs any

    asked by kevin
  25. Physics

    A harpsichord string of length 1.50 m and linear mass density 26.0 mg/m vibrates at a (fundamental) frequency of 460.0 Hz. (a) What is the speed of the transverse string waves? m/s (b) What is the tension? N (c) What are the wavelength and frequency of the

    asked by Reza
  26. Chemistry

    The FDA recommends that adults ingest less than 2.4 g of sodium per day. How many liters of softened water, containing a sodium concentration of 0.050% sodium by mass, have to be consumed to exceed the FDA recommendation? (Assume a density of 1.0 g>mL for

    asked by Cloey
  27. Trig/PreCalc

    Teach me how to express 5sqrt3 - 5i in polar form please. I don't want you to do the work for me. Just show me the steps I need to do the work properly on my own. Otherwise I will not pass this class or the exam when I enter college, and I do not want to

    asked by tabby
  28. Physics

    Find the speed of sound (in m/s) at -35°C at 1 atm pressure in dry air.

    asked by George
  29. Geometry

    What Is The Measure,In Degrees, Of Each Exterior Angle Of A Regular Hexagon ?

    asked by Dats Whoooo
  30. Finance

    Byron Corporation's target capital structure consists of 40% debt and 60% common equity. Assume that the firm has no retained earnings. The company's the last dividend (Do) was $2.00, which is expected to grow at a constant rate of 5%, and the current

    asked by Anonymous
  31. Mirielle

    The endpoints of the diameter of a circle are (-6,2) and (10,-2). What are the coordinate of the center of the circle?

    asked by Geometry
  32. reading

    In the poem "The shark " by John Ciardi what effect does the repeating of the phrase "one dark thought" have?

    asked by Dakota
  33. Chemistry!!!

    What is the solubility of MnS, in grams per liter, in a buffer solution that is 0.120 M HC2H3O2 - 0.490 M NaC2H3O2? For MnS, Kspa=3x10^7.

    asked by John
  34. Finance

    The current market wage rate is $10, the rental rate of land is $1,000 per unit, and the rental rate of capital is $500. Production managers at a firm find that under their current allocation of factors of production, the marginal revenue product of labor

    asked by Anonymous
  35. Calculus

    Find the area of the indicated region. We suggest you graph the curves to check whether one is above the other or whether they cross, and that you use technology to check your answer. (Round your answer to four significant digits.) HINT [See Quick Example

    asked by Alex
  36. Physics

    A mixture of light with wavelength 540 nm and light with wavelength 400 nm is aimed at a pair of slits to produce a double-slit interference pattern. Which of these will be true? The pattern will be the same for both wavelengths. The central maximum will

    asked by Anonymous
  37. physics

    if a person is pushing a cart with a force of 40 Newtons and it accelerates at 0.5 m/s2 , what is the mass of the cart ?

    asked by ariel
  38. Chemistry

    The FDA recommends that adults ingest less than 2.4 g of sodium per day. How many liters of softened water, containing a sodium concentration of 0.050% sodium by mass, have to be consumed to exceed the FDA recommendation? (Assume a density of 1.0 g>mL for

    asked by Cloey
  39. English 4

    people who attract a lot of friends are neither negative nor needy.

    asked by Jasmin Romo
  40. Physics

    Find the speed of sound (in m/s) at -35°C at 1 atm pressure in dry air.

    asked by Anna
  41. Algebra

    Snap to It... I snap my fingers now, in one second, I smap them again. I wait two seconds and snap them a third time. I wait 4 seconds before snapping them again. Then I wait eight, then sixteen, and the pattern continues. The interval between each snap

    asked by Linda
  42. linear algebra

    1)If A is an invertible matrix and k is a positive integer, then (A^k)^-1 = (A^-1)^k note: ^ stand for power, -1 stand for inverse of A 2)If A is an invertible matrix, then (transpose of A)^-1 =transpose of(A^-1) 3)Prove A^2 = A, then I - 2A = (I - 2A)^-1

    asked by soasi piutau
  43. U.S. History

    What policy first committed the United States to the containment of communism? Truman Doctrine Marshall Plan Yalta Accords or European Recovery Program

    asked by Izzy
  44. thermochemistry

    The heat ofvaporization of water at 373K is40.7kj/mol. Find q for the evaporation of 491g of water at this temperation

    asked by Anonymous
  45. math

    Two prisms are similar. The surface area of one is four times the surface area of the other. What is the ratio of the corresponding dimensions?

    asked by samantha
  46. Chemistry

    Suppose a fuel-cell generator was used to produce electricity for a house. If each H2 molecule produces 2e- how many kilograms of hydrogen would be required to generate the electricity needed for a typical house? Assume the home uses about 850 kWh of

    asked by Anonymous
  47. Physics (Mechanics) - unanswered

    An electron of mass 9.1E-31 kg is released from rest at a distance of 7.1 E-10 m from a fixed electron. The force on the movable electron is given by the function F = 2.3E-28/r^2, where r is the distance between the electrons. Find the maximum velocity (in

    asked by andrew
  48. microeconomics

    Explain how the following events would affect the demand for labor. A new education program administered by the company increases labor’s marginal product. The firm completes a new plant with a larger workspace and new machinery.

    asked by Anonymous
  49. math/Calculus

    A bacterial population starts at 500 and doubles every four days. Find a formula for the population after t days and find the percentage rate of change in population.

    asked by Sandra Gibson
  50. Physics

    A piece of glass is immersed in water . If a light ray enters the glass from the water with an angle of incidence greater than zero, in which direction is the ray bent?

    asked by Karen
  51. Chemistry

    When the following solutions are mixed together, FeSO4 (aq) + Csl (aq): What precipitate if any will form, Write the balanced equation, write the complete ionic equation and wriye the net ionic equation?

    asked by Ann
  52. Physics Mechanics (unsolved)

    An electron of mass 9.1E-31 kg is released from rest at a distance of 7.1 E-10 m from a fixed electron. The force on the movable electron is given by the function F = 2.3E-28/r^2, where r is the distance between the electrons. Find the maximum velocity (in

    asked by andrew
  53. chemistry

    How many grams of CuSO4 are there in 219 grams of an aqueous solution that is 20.2% by weight CuSO4

    asked by Jeanne
  54. Chem-Ionic & Net equations

    When the following solutions are mixed together, FeSO4 (aq) + Csl (aq): What is the balanced equation? What is the complete ionic equation? What is the net ionic equation? I don't know how to balance these problems, can someone please show me how to solve

    asked by ASA
  55. statistics

    A box contains 3 white and 5 black balls. Four balls are drawn at random "with replacement" from the box (i.e. selected balls are returned to the box and mixed, before drawing the next ball). Let X be the number of black balls drawn. What is the

    asked by Anonymous
  56. math

    perimeter of a triangle is 18 cm, what is the length of its longest side??

    asked by Anonymous
  57. physics

    An engine absorbs 2000J of heat from a hot reservoir and expels 750J to a cold reservoir during each operating cycle. What is the efficiency of the engine?

    asked by me
  58. Trig

    How do i find the exact value of sin 15 using the half angle formula

    asked by Briana
  59. Science

    What pressure is exerted by 0.010 mol of methane gas if it is volume is 0.26 L at 373°K?

    asked by Kayla
  60. physics

    The number of electrons that move about the nucleus of an electrically neutral atom is the same as the number of ____________________. A) protons in the nucleus.B) quarks in the nucleus.C) protons + neutrons in the nucleus.D) neutrons in the nucleus.E)

    asked by Kristie
  61. Algebra

    Snap to It... I snap my fingers now, in one second, I smap them again. I wait two seconds and snap them a third time. I wait 4 seconds before snapping them again. Then I wait eight, then sixteen, and the pattern continues. The interval between each snap

    asked by Linda
  62. intermediate algebra

    Find the product...(x-2)(x^2+2x+4)

    asked by Lueshelle
  63. Life Orientation

    Identify and describe one environmental problem that causes ill health,accidents,crises and disasters.

    asked by Tshepiso
  64. math

    Jenny does the dishes every third day, Mark every fourth day, and Misty every sixth day.If they all shared dish duty today, when will they all share dish duty again?

    asked by carmen
  65. math

    Jenny does the dishes every third day, Mark every fourth day, and Misty every sixth day.If they all shared dish duty today, when will they all share dish duty again?

    asked by carmen
  66. physics

    To say that charge is conserved is to say that charge ____________________. A) is transferred, but never created or destroyed.B) is stored and never lost.C) None of the above.D) remains the same, whatever occurs physically.E) All of the above.

    asked by Kristie
  67. physics

    How much resistance must a 9-V device have to keep the current about 1 A? A) None of these.B) 1 ohm.C) 9 ohms.D) 4.5 ohms.E) 10 ohms.

    asked by Jim
  68. Art and Humanities: Twentieth Century and Beyond

    Prepare and conduct interviews with two people about their definition of happiness, how they gained this view, and whether they feel happiness is achievable. Choose two people who vary in age and experience. Only one of the subjects can be someone you know

    asked by Philip
  69. algebra

    A basketball player made 52 out of 65 free throws. What percent is this

    asked by linda
  70. child day care

    You’ve decided to operate a day care home. Which one of the following factors is the most important in helping you make your decision? A. Your family is willing to share their living space with the children in the program. B. Your home seems to be large

    asked by anna
  71. Chemistry

    78 mL of a 1.60M solution is diluted to a volume of a 238mL. A 119-mL portion of that solution is diluted using 133 mL of water. What is the final concentration

    asked by Sam
  72. chemistry

    If 48.3 g of an unknown gas occupies 10.0 L at 40 degrees celsius and 3.10 atm, what is the molar mass of the gas?

    asked by cheryl
  73. Chemistry

    what is the relationship between reaction spontaneity and the extent of reaction?

    asked by meme
  74. physics

    At a distance of 7.5 m from a point sound source, the sound intensity level is 105 dB. At what distance is the intensity level 90 dB?

    asked by Anonymous
  75. physics

    There are electrons in the filament of the ac lamp in your bedroom. When you turn on the lamp and it glows, the glowing comes from A) the positive charges that flow in the filament.B) the same electrons.C) different electrons; the ones that flow in the

    asked by Jim
  76. English--Essay help

    I'm in need of some help. What do you think would be a good thesis statement for and essay on abortion pro-life? I have thought about this for at least an hour now, and can't come up with anything that is somewhat good....Ideas would be greatly appreciated

    asked by Mackenzie
  77. Chemistry

    What volume of 85% H3PO4(d=1.68g/mL) and weight of KH2PO4 are required to prepare a buffer of pH=3 that has an ionic strength of 0.2?

    asked by Sam
  78. chemistry

    Describe in detail, the steps a student needs to carry out to accurately obtain a 500 ml solution of .100 M HNO3 from a solution of 1M HNO3

    asked by Angelica
  79. physics needed asap

    When you bring a positively charged rod next to the electroscope without touching it, the electroscope is neutrally charged, yet the leaves at the bottom of it repel each other. Why?

    asked by tyrell
  80. physics

    The image formed in a plane mirror will be

    asked by kiara
  81. Physics

    What is the speed of the wave represented by y(x, t) = A sin(kx − ωt),where k = 7.0 rad/cm and ω = 3.6 rad/s? answer should be in cm/s I tried to subtract 7-3.6= 3.4 which is wrong and I also divided 7/3.6=1.94 , but that is wrong too. I don't know how

    asked by Reza
  82. calculus

    find the slope of the tangent line at the point (1,2) for the ellipse 2x^2+3y^2=14 y'(1) = ??

    asked by Mhd
  83. social studies

    Hi, I'm writing about the Constitution and I was wondering did State Sovereignty let the government change ammendments or rights? I just need a quick answer to guide me along, thank you so much.

    asked by jon
  84. algebra

    could you please show me how to do this problem? ballfield costs 14,850,00 to build. the cost per city resident to build it will be based on last census. New census shows population increased by 2200 people, which reduced the cost per resident $75. what is

    asked by ann
  85. Science

    The object distance for a convex lens is 15.0 cm, and the image distance is 5.0 cm. The height of the object is 9.0 cm. What is the height of the image?

    asked by Kelly
  86. chem 101

    . In an electron microscope the electrons generate the image. For one of the scanning electron microscopes in our Central Analytical Facility, the electrons are accelerated to have a kinetic energy of 200,000 eV. Electrons with this kinetic energy have a

    asked by Anonymous
  87. Trig

    can I please have help with these 3 questions? 1. Solve this equation graphically on the interval [0, 2ð]. list the solutions. sin(2x)-1=tan x 2. solve sin x cos x= sqrt3/4 3. solve tan^2 x-3tan x+2=0 thank you! show step by step please.

    asked by BreAnne
  88. Physics

    Physics Report! What should i write..please help me need ideas !best answer!? Well First my report should be focused on Circular Motion OR Energy and momentum All the report says is to spend a day or two analysing the world around you in terms of Linear

    asked by Rodney
  89. physics

    Charge polarization is normally produced by ____________________. A) nuclear interactions.B) contact.C) induction.D) friction.E) electrostatic means.

    asked by Kristie
  90. maths

    Mr Tan had a box of marbles. 2/3 of the marbles were blue and the rest were yellow. He gave his son 4/5 of the blue marbles and 3/4 of the yellow marbles. If he had 39 marbles left, how many marbles did he have at first?

    asked by ssss
  91. quantum physics

    A nuclear reactor generating plant supplies 53.0 MW of useful power steadily for a year. Assuming that, in addition, twice this power is wasted in heat production, determine the mass (in kilograms) converted to energy in a year at this plant.

    asked by Ryan
  92. physics

    A dentist, experimenting with a new mirror, places it 2.0 cm from a tooth and sees a reduced image located 1.0 cm behind the mirror. What is the focal length of this mirror?

    asked by kiara
  93. Math

    A landscaper is choosing a compost bin. He wants it to hold exactly 12 cubic feet of compost. Using whole numbers only, how many different sizes can he choose from?

    asked by Alice S.O.S
  94. how do i enter my answer

    √4:(32x^11y^15)/√4:(2x^3y^-2) for this equation i got =2x^2y^4√4:y and in my worksheet it says enter it: √b, enter sqrt(b). For example: For 4√3 enter 4sqrt(3) so how would i enter my answer

    asked by Nancy
  95. Algebra 2

    √(21x^2y/(75xy^5) it says on my paper to enter it: √b, enter sqrt(b). For example: For 4√3 enter 4sqrt(3) Please help, I've got 5 wrong! :(

    asked by Nancy
  96. math

    at a store you bought 2 pounds of apples and 1 1/3 pounds of grapes. If the store's scale measures to the nearest half pound, what is the range of possible actual weights for the sum of both purchases of fruits.

    asked by nancy
  97. Help! Math

    Collins buy a guitar at music store that offers 5% discounts for paying cash.The Collins received $34 off. What is there total bill before discount? Must round to nearest dollar amount.

    asked by Zith
  98. world history

    What major impact did the Strategic Arms Limitations Talks in the Cold War have on world history? Was the UN involved and how?

    asked by Aaliya
  99. physics

    Calculate the internal energy of 25.0 g of low-density oxygen gas (O2) at a temperature of 255 K.

    asked by JOHN
  100. physics needed ASAP

    When you bring a positively charged rod next to the electroscope without touching it, the electroscope

    asked by tyrell
  101. physics

    If a voltage difference of 3V causes a 1.5 current, what is the resistance in the circuit

    asked by francisca
  102. chemistry

    a 5.0 g sample of ice was heated from -20.0 degrees C o 0 degrees C and remained solid. the specific heat of ice is 2.1 j/gC. How much heat did the ice absorb?

    asked by laura
  103. science

    Most of us are aware of the energy concerns of today and the future. There are many pros and cons to the energy sources we currently use. For this forum choose one of the following to discuss: If you had to argue the benefits of nuclear energy, what would

    asked by Anonymous
  104. maths

    A factory was required to produce a crtain number of television in four days. On the first day, it produced 1/6 of the required number of television sets. On the second day, it produced another 18 sets. On the third day it produced twice as many television

    asked by ssss
  105. math

    In an 8 inch by 12 inch rectangular photograph, the image of a building is 5 inches high. If the photograph is magnified until its perimeter is 720 inches, what is the height, in inches, of the image of the building in the larger photograph?

    asked by Lexi
  106. business

    Which of the following is a key factor in allowing a small business to remain competitive

    asked by Nadne
  107. physics energy

    A potential function is given by U(x) = 18 x^2. What will be the acceleration (in meters/second ^2) of a 8.00 kg mass, when it is at the position x = 0.500 m?

    asked by bob
  108. math

    if kate has 8 red, 4 blue and 4 green jelly beans in her pocket, what is the minimum amount of jelly beans she can bring out of her pocket that will contain all colours?..

    asked by Anonymous
  109. Mathematics

    Kate has a tennis lesson every 5 days. She has a basketball game every 8 days. If she has both a tennis lesson and a basketball game today, on what day will she have both again?

    asked by Maria
  110. math

    You have 6 cups of sugar. It takes 1 cup of sugar to make 24 cookies. The function c(s) = 24s represents the number of cookies, c, that can be made with s cups of sugar. What domain and range are reasonable for the function? (I know that you get 144

    asked by Jane
  111. calculus

    P2 has a mysterious inner product * for which {x+4, 3x-5} is an orthonormal basis. IS there enough information to tell what is the length of 1? If so, compute it. If not say why not.

    asked by Scott
  112. math

    I NEED HELP NOW! I forgot how many inches in a yard

    asked by Nix The Robot
  113. intermediate algebra

    Find the quotient...Show work.....y^4+y+1/y^2-9

    asked by Lueshelle
  114. Physics

    Two tiny spheres, one with a charge of -17mc and the other with a charde of +3mc are positioned with the positive charge 14cm above the negative. What is the magnitude and direction of the force on the negative charge?

    asked by Anonymous
  115. Chemistry

    Are the following parameters stability indicating? 1) Viscosity of a substance 2) Optical rotation of a substance

    asked by jean
  116. math

    What is the square root of pi?

    asked by jack
  117. physics

    What voltage is required to run a 45 W light bulb if the current is 0.5 A?

    asked by billy
  118. chem 101

    How much heat is required to raise the temperature of exactly one liter of water fro m 60 °F to 180 °F? a. 79 kJ b. 120 kJ c. 251 kJ d. 279 kJ correct** e. 502 kJ help with solution?

    asked by Anonymous
  119. Finance

    Explain why a savings and loan association that pays a nominal rate of 4.5% interest, compounded daily, actually pays an effective rate of 4.6 %.

    asked by Sammy James
  120. Math

    Fraction as a decimal. 1) 63/17500 2) 102/125

    asked by Harriet
  121. Science

    I need 3 examples of mechanical waves. I have seismic, and ocean waves. Are their any other examples besides these and sound waves?

    asked by Alyonka
  122. trigonometryyyyyy

    Math Notation: x^2 means x raised to the second power or x squared. Explain how to translate the graph of y = -x^2 to produce the graph y = -x^2 + 3. What would the graph look like?

    asked by cheyanne marie
  123. principles of economics

    four companies produce virtually all breakfast cereal. how might this concentation of market power affect market outcomes? what should the government do, if anything?

    asked by felicia
  124. poli sci 150

    Compared with Western Europe, the United States ha a(n) _____________ turnout in elections. a) unstudied b) toughly equivalent c) noncomparable d) higher e) lower

    asked by tina
  125. Math

    What is the surface area in square units? top= 10 square units bottom= 10 square units right= 4 square units left= 4 square units front= 10 square units back= 10 square units

    asked by Mia PLEASE
  126. calculus

    P2 has a mysterious inner product * for which {x+4, 3x-5} is an orthonormal basis. IS there enough information to tell what is the length of 1? If so, compute it. If not say why not.

    asked by Scott
  127. Math

    A contact lens has a spherical shape and pretend it is being held on a finger ready to put into an eye. (All measures are in millimetres.) Suppose we take the semi-circular cross-section through the middle of the lens. Find the equation of the lens if the

    asked by Aria
  128. algabra

    find given the funcrion k described by k(x) =12x, find each of the following (a) k(-19),(b0 K (10)(c) k(21),k(-19)=

    asked by danny
  129. Math

    Find an equation of the tangent line to the graph of y = f(x) at x = a, a = 1. f(x) = x + 3/x^2 + 1

    asked by Sandra Gibson
  130. maths.

    Alice spent some money on 60 stamps of two different values. The values of stamps could be 5-cents, 10-cents,20-cents and 30-cents. The total amount of money he spent was between $5 and $10. 2/5 of the tamps cost 4/3 times as much as the rest of the

    asked by ssss
  131. Math

    How would I determine if a set of numbers if Gaussian or non Gaussian?

    asked by Jason
  132. science

    a box is dropped off a tall building. At what time after release is it falling 15 m/s?

    asked by Meg
  133. chemistry

    How is it possible for a chemical rxn to be highly spontaneous and have a negative entropy value? Isn't this inconsistent with the 2nd law of thermodynamics?

    asked by Anonymous
  134. Math

    If you are in a hot-air balloon at a height of 100 meters, you can expect to see ____ km. Round your answer to the nearest kilometer and enter only the number.

    asked by Jane
  135. Math

    1. P5 is an innerproduct space with an inner product. We applied the Gram Schmidt process tot he basis {1,x,x^2,x^3,x^4} and obtained the following as the result {f1,f2,f3,f4,x^4+2}. a. What is the orthogonal complement of P3 in P5 with erspect to this

    asked by Scott
  136. Math

    A landscaper is choosing a compost bin. He wants it to hold exactly 12 cubic feet of compost. Using whole numbers only, how many different sizes can he choose from?

    asked by Alice
  137. chem 101

    How much alcohol must be burned to generate 279kj of heat to warm the water as described in problem 3?(from 60 F to 180 F) a. 18.7 g b. 2.9 g c. 1.6 g d. 10.4 g e. 9.3 g the answer is D help with solution?

    asked by Anonymous
  138. Lab Math/Statistics

    The 95% confidence interval for a quality control specimen is 9.2-10.2 mg/dl. My question is, how do I figure out the coefficient of variation (%CV) with only this information?

    asked by Jason
  139. mat

    I was 35 when my niece was born and she is 12. 47-12=35. What would be our ages x's 3

    asked by kay
  140. us history

    what was James L. Farmer, Jr. political and religious views?

    asked by sarah
  141. chemistry

    what is the meaning of gibbs free energy? I have the equation, but what exactly, in words, does it mean?

    asked by anonymous
  142. psychology

    "If that wasn't illegal, then it wouldn't be against the law" may commit which fallacy?

    asked by Anonymous
  143. math

    if a box has a width of 15, a height of 9 and a length of 18, what would be the least amount of cardboard needed to make the box

    asked by terminator
  144. algerbra 2

    how do i find the center for the hyperbola x2over16-y2over25=1

    asked by kimberly
  145. science

    What is the meaning of calibration?

    asked by erode kathirvel
  146. math

    Solve y'+6y=12 subject to y(2)=10

    asked by Anonymous
  147. Calculus

    Total cost to manufacture q microwaves a day is C(q)=3q^2+q+48.What level of product gives the least average cost and Can a microwaves be produces for less than $30?

    asked by Britt
  148. math

    graph f(x) - 4x

    asked by mel86
  149. liberal arts

    what is the fomula for n!

    asked by vanessa
  150. Chemistry!!

    A solution has [Al^3+]=8.0×10−2 M and [HC2H3O2]= 1.10 M. What is the maximum quantity of NaHC2H3O2 that can be added to 200.0 mL of this solution before precipitation of Al(OH)3 begins?

    asked by John
  151. geology please help me urgent if you can please

    the question is below: explain the role of sedimentary rocks in the rocks cycle?

    asked by jessie