winston

Most popular questions and responses by winston
  1. calculus

    If x2+xy=10, then when x=2, dy/dx=?

    asked on December 31, 2010
  2. Math

    A pig farmer wants to enclose a rectangular area and then divide it into three pens with fencing parallel to one side of the rectangle (see the figure below). There are 940 feet of fencing available to complete the job. What is the largest possible total

    asked on December 10, 2014
  3. Statistics

    You are interested in estimating the mean of a population. you plan to take a random sample from the population and use the samples mean as an estimate of population mean. Assuming that the population from which you select your sample is normal, which of

    asked on October 25, 2016
  4. MATH

    In a fraternity with 38 members , 18 take math, 5 take both math and literature and 8 take neither math or literature. how many take literature but not math? I came up with 16 is that correct or am i lost ?

    asked on November 24, 2014
  5. Computer Architecture

    home / study / engineering / computer science / computer science questions and answers / 4.7 problems in this exercise assume that the logic blocks used to implement a processor’s ... Question: 4.7 Problems in this exercise assume that the logic blocks

    asked on November 15, 2017
  6. MATH

    a crew consists of 1 apprentice, 1 journeyman and 1 master carpenter. The crew receives a check for $5950 for a job. A journeyman makes 300% of what a apprentice makes, and a master makes 150% of what journeyman makes how much do each person on the crew

    asked on December 1, 2014
  7. math

    the gauss's approach to find the following 1+2+3+4+... 99 1+3+5+7+...101

    asked on December 1, 2014
  8. Chemistry

    electromagnetic radiation of which frequency (in Hz) can be emitted by the hydrogen atom upon transition of an electron from n= 6 to n= 2 according to the bohr model.

    asked on May 8, 2012
  9. Math

    Gary walked 1 1/2 km to school, then 750 m to his job, then 1 km home. How many kilometres did he walk altogether?

    asked on October 23, 2016
  10. Linear Algebra

    Let T be a linear operator on R2 defined as follows on the standard basis of R2. T(1, 0) = (3, 2), T(0, 1) = (−1, 4). Find T(9, 4).

    asked on March 21, 2016
  11. physical science

    find the mass of sodium chloride formed when 6.9g of sodium burns in a gas jar filled with chlorine gas.

    asked on February 22, 2012
  12. help on calculus

    A spherical balloon is being filled with air in such a way that its radius is increasing at a rate of 2 centimeters per second. At what rate is the volume of the balloon changing at the instant when its surface has an area of 4 pi or 12.56637061 square

    asked on December 30, 2010
  13. Math

    A shirt button gas a mass of 400 mg. A factory produces a tonne of these buttons in a year. How many buttons does it produce.

    asked on October 23, 2016
  14. english(4th grade)

    Identify the gerund and classify whether it is used as a subject, direct object, indirect object, predicate noun, appositive, and object preposition.  1. He left without saying goodbye.  2. Studying is investing for the future.  3. Making a major

    asked on December 27, 2014
  15. english (4th grade )

    Identify the gerund and classify whether it is used as a subject, direct object, indirect object, predicate noun, appositive, and object preposition. 1. He left without saying goodbye. 2. Studying is investing for the future. 3. Making a major decision is

    asked on December 26, 2014
  16. Math

    using gauess approach 1+2+3+4+... +99 1+3+5+7+...+101

    asked on December 16, 2014
  17. math

    slove for ^x x^2-3x-18=0

    asked on March 11, 2014
  18. Theory of Computing

    1. Prove by induction that b - a | b^n - a^n for all n >= 1.

    asked on September 19, 2017
  19. Math

    What criterias do two graphs have to meet in order to be isomorphic? I know they must have the same number of vertices and edges. Do they both have to be bipartite/non-bipartite?

    asked on March 2, 2017
  20. Math

    Sorry posted the wrong question earlier. Let A and B be sets. Show that A \ (A \ B) ⊆ B.

    asked on January 27, 2017
  21. Math

    What is the value of x after these statements if the starting value of x is 3. (a) If x^2 = 5^x then x := 25^x. (b) If x^2 > x and x^3 < 4x^2 then x := x+ 2. (c) If 4^x < x^4 or x^5 > 5^x then x := x^2. (d) If 5^x > 2^x xor x^2 < 11 then x := x + 8. (e) If

    asked on January 15, 2017
  22. Dylan

    Find two distinct intervals where f(x) = x^7 + 3x^2 - 11x + 5 has at least one root.

    asked on January 19, 2016
  23. math help

    given the function F described by f(x)--x-6. find f(-7)

    asked on December 5, 2014
  24. math

    find the prime factorization of 35^3 *55*9^11

    asked on November 25, 2014
  25. math

    sub 780 for x -2,5x^2 +2825x -115,812.5

    asked on March 19, 2014
  26. math

    substitute 400 for x 0.005x^2-45x+12,000

    asked on March 18, 2014
  27. MATH

    Use your calculator to compute the actual roots. Use the Quadratic Formula to solve x2 – 4x – 8 = 0.

    asked on March 12, 2014
  28. math

    x(6x+1)

    asked on March 10, 2014
  29. math

    y=9(7+4)^2+9

    asked on March 9, 2014
  30. math

    simplfy 3 root 3/8

    asked on February 28, 2014
  31. College Mathematics

    The mass of a large stone block was determined to be 3361 kg. What is the weight of this stone in tons? A. 3.7 B. 1680.5 C. 1512.45 D. 3361

    asked on January 5, 2014
  32. Math

    When the moon is at its zenith at a point A on earth, it is observed to be at the horizon from point B. Points A and B are 6155 mi apart and the radius of the earth is 3960mi. Estimate the distance of the moon. Thanks!

    asked on May 8, 2012
  33. Theory of Computing

    Prove the following identities in a Kleene algebra. a) (a + bb + ba(b + aa)* ab)* = (a + b(ab*a)* b)* b) a* + a*b(ba*b +ab*a)* ba* = (a + b(ab*a)* b)*

    asked on October 22, 2017
  34. Math

    Prove that if A∩B = A∪B then A=B. Having troubles figuring this one out.

    asked on April 17, 2017
  35. Math

    What criterias do two graphs have to meet in order to be isomorphic? I know they must have the same number of vertices and edges. Do they both have to be bipartite/non-bipartite?

    asked on March 3, 2017
  36. Math

    Decide if the following pair of functions are of the same order. The functions f(x) and g(x) are of the same order if f(x) is O(g(x)) and f(x) is Ω(g(x). (a) f(x) = x^2 - 7 and g(x) = x^2 + 7

    asked on February 6, 2017
  37. Math

    Decide if the following pair of functions are of the same order. (a) f(x) = x^2 - 7 and g(x) = x^2 + 7 I found this example solution online: a). f(x) = 3x + 7 and g(x) = x x

    asked on February 2, 2017
  38. Math

    Decide if the following pair of functions are of the same order. (a) f(x) = x^2 - 7 and g(x) = x^2 + 7 I found this example solution online: a). f(x) = 3x + 7 and g(x) = x x

    asked on February 1, 2017
  39. Math

    Decide if the following pair of functions are of the same order. (a) f(x) = x^2 - 7 and g(x) = x^2 + 7

    asked on January 31, 2017
  40. Math

    Find the smallest integer value of N such that f(x)=O(x^N). a) f(x) = x^7 - 150x^6 + 3x^3 + 111 b) f(x) = (x^3 + 2x^2) / (x^4 + x^2 + 1) c) f(x) = ⌈x⌉ d) f(x) = ⌊x⌋

    asked on January 30, 2017
  41. Math

    Find the smallest integer value of N such that f(x)=O(x^N). a) f(x) = x^7 - 150x^6 + 3x^3 + 111 b) f(x) = (x^3 + 2x^2) / (x^4 + x^2 + 1) c) f(x) = ⌈x⌉ d) f(x) = ⌊x⌋

    asked on January 29, 2017
  42. Math

    Let A and B be sets. Show that A\B(A\B) ⊆ B.

    asked on January 27, 2017
  43. Math

    Let A and B be sets. Show that A\B(A\B) ⊆ B.

    asked on January 26, 2017
  44. Math

    Let A and B be sets. Show that A\B(A\B) ⊆ B.

    asked on January 26, 2017
  45. Math

    Suppose that the domain of discourse is the set {-2, -1, 0, 1, 2}. Express the following statements without using quantifiers, using only the connectives ¬, V, Λ. (a) ∃x P(x) (b) ∀x P(x) (c) ∃ ¬P(x) (d) ∀ ¬P(x) (e) ¬∃ P(x) (f) ¬∀ P(x)

    asked on January 16, 2017
  46. Math

    Suppose that the domain of discourse is the set {-2, -1, 0, 1, 2}. Express the following statements without using quantifiers, using only the connectives ¬, V, Λ. (a) ∃x P(x) (b) ∀x P(x) (c) ∃ ¬P(x) (d) ∀ ¬P(x) (e) ¬∃ P(x) (f) ¬∀ P(x)

    asked on January 16, 2017
  47. Math

    Suppose that the domain of discourse is the set {-2, -1, 0, 1, 2}. Express the following statements without using quantifiers, using only the connectives ¬, V, Λ. (a) ∃x P(x) (b) ∀x P(x) (c) ∃ ¬P(x) (d) ∀ ¬P(x) (e) ¬∃ P(x) (f) ¬∀ P(x)

    asked on January 15, 2017
  48. Math

    Consider the propositions p: "You like hockey.", q: "You like the cold.", r: "You play hockey.", and s: "You watch hockey." Write the following propositions using p,q,r and s and logical connectives. (a) You watch hockey but you do not play hockey. (b) If

    asked on January 14, 2017
  49. Math

    In a 5 km race, Anna swims 450 m, then runs 800 m. She then cycles the rest of the race. How many kilometres does she cycle?

    asked on October 23, 2016
  50. Math

    Three blocks, each 15 cm thick, are stacked on top of a 1.2 m box. How many metres high is the stack?

    asked on October 23, 2016
  51. Math

    Pat cuts a 40 cm length off a 3 m ribbon. How many centimetres of ribbon remain?

    asked on October 23, 2016
  52. math

    Find two distinct intervals where f(x) = x^7 + 3x^2 - 11x + 5 has at least one root.

    asked on January 19, 2016
  53. math

    Find the value of K such that the map f is continuous at x = -2 if f(x) = { K/((x^2)+4) if -5

    asked on January 19, 2016
  54. math

    Find all the values of x in the interval [0, 2pi] such that tan^2(x) = 3.

    asked on January 19, 2016
  55. math

    Knowing that 0

    asked on January 18, 2016
  56. MATH

    5^6 * 5^3

    asked on December 4, 2014
  57. MATH

    put in order from largest to smallest 0.54, 0.60686, 0.5065

    asked on November 14, 2014
  58. math

    the mass of a grain of sand is 8.7*10^-8 write the nurmeral in secentence in standard form.

    asked on November 14, 2014
  59. MATH

    sub 789 for x -2.5x^2 +2825x-115,812.5 having troubble undeerstanding the process . could someone show me step by step..

    asked on March 19, 2014
  60. MATH

    sub 789 for x -2.5x^2 +2825x-115,812.5

    asked on March 19, 2014
  61. math

    subsititude 9 for x 123x^2-492x+813

    asked on March 17, 2014
  62. math

    select the approximate values of x that are solutions to f(x)=0 where f(x)-5x^2+8+5

    asked on March 14, 2014
  63. math

    select the approximate values of x that are solutions to f(x)=0, f(x)=-8x^2+2x+4

    asked on March 14, 2014
  64. math

    2x^2+7=9

    asked on March 12, 2014
  65. math

    x^2+x-18=0 quadratic equation slove for x

    asked on March 11, 2014
  66. math

    14x^2+19x+32=18

    asked on March 10, 2014
  67. math

    y=-5x^2+10x-1

    asked on March 9, 2014
  68. MATH

    NEED SOME HELP 2x^2+5x+3=0

    asked on March 9, 2014
  69. math

    help pleaSE factorable quadratic equation and solve for the roots: 2x^2 + 13x + 20=0

    asked on March 9, 2014
  70. MATH

    f(x)= -6x-1 and g(x)=4x^2 select the soultion for (f+g)(x) stuck not sure which answerer is correct -24x^2-1 or -24x^3-4x^2

    asked on March 9, 2014
  71. MATH

    F(X)=-6-1 AND G(X)=4X^2 WHAT WOULD THE SOLUTION FOR (FG) (X) BE. im stuck between -24x^2-1 or -24x^3-4x^2

    asked on March 9, 2014
  72. math

    help select the x coordinate of the vertex of paraloa defined by function f(x) -5x^2+7x+3 stck between two options =5/7 or -7/5

    asked on March 8, 2014
  73. math

    can some one help me ... determind the equation of g(x) that results translating the funtion f(x)=x^2 +19 upward 15 units,,,, the answere im stuck is not sure g(x)=x^2+24 0r is it g(x)=(x+15)^2 +9

    asked on March 8, 2014
  74. MATH

    HELP PLEASE y = 3x2 + 2x – 1

    asked on March 7, 2014
  75. math

    im stuck on this problem can some one please explain.. y=9(7+4)^2+9

    asked on March 7, 2014
  76. math

    i need some help please 2x^2 +5-3

    asked on March 7, 2014
  77. math

    need help! solve for y 7y^2-52y-32=0

    asked on March 7, 2014
  78. math

    i need help understanding this problem. 3x^2+4x+2=0

    asked on March 4, 2014
  79. math

    need some help 2x^2 + 5x -3

    asked on March 4, 2014
  80. MATH

    help 16^2ã24/6ã56

    asked on March 2, 2014
  81. MATH

    can somone help! 7ã2*3ã9

    asked on March 2, 2014
  82. MATH

    help... 5sqrt(8) - 3sqrt(18) + sqrt(3)

    asked on March 1, 2014
  83. MATH

    PLEASE HELP ME! 4sqrt2+6sqrt4

    asked on March 1, 2014
  84. math

    need help 3x^2sqrt(5x) * 3sqart(3x^3)

    asked on February 28, 2014
  85. College Mathematics

    Solve: 8.5x +8 = 1.3x + 15 A. x = 50.4 B. x = 0.7 C. x = 3.2 D. x = 1.0 Is B the correct answer

    asked on January 5, 2014
  86. Personal Finance

    You and your spouse both have good retirement plans through work, and both receive social security checks based on your own incomes. If your goal is to maximize the size of your annuity check everymonth which option should you choose? A. Single Life

    asked on December 14, 2013
  87. Personal Finance

    Social Security is all but: A. financed through working individuals and employers. B. a government benefit paid to elderly and disabled. C. a specific savings plan to which individuals contribute and from which they benefit. Is the Answer C ?

    asked on December 14, 2013
  88. Math

    estimate the sum or difference by rounding the nearest one 9.87 +4.05

    asked on November 11, 2010
  1. Math

    Anyway to do it without drawing?

    posted on April 17, 2017
  2. Math

    I was never asking for the answer

    posted on February 1, 2017
  3. Math

    I'm not sure. eecs.yorku.ca/course_archive/2015-16/F/1019/assn/A6.pdf Question 30 shows an example but I don't really understand.

    posted on January 31, 2017
  4. Math

    It's actually A \ (A \ B) ⊆ B

    posted on January 27, 2017
  5. Math

    does this look good to you? (a). x = 3 (b). x := 3 + 2 = 5 (c). x := 32 = 9 (d). x := 3 + 8 = 11 (e). x = 3

    posted on January 15, 2017
  6. Math

    Thanks. so what would an example solution for a?

    posted on January 15, 2017
  7. Math

    Just want to make sure what I'm doing is right. Thanks!

    posted on January 14, 2017
  8. Business Math

    april 26

    posted on September 15, 2016
  9. math

    Need help computing this limit. lim x->0 x^3 (1 - 5sin(1/x)) I can't figure out how to remove the x.

    posted on January 19, 2016
  10. 4th grade math

    500

    posted on October 20, 2015
  11. Math

    52m

    posted on September 3, 2015
  12. english(4th grade)

    1.object of preposition 2. Predicate noun

    posted on December 27, 2014