Questions Asked on
October 7, 2018

  1. Arts

    1. which of the following did the development of linear perspective allow artists to do? a. show human anatomy more accurately* b. paint three dimensional images on a flat surface c. create more exact technical drawings d. build domes with precise

    asked by lisa
  2. probability theory

    Let X, Y, Z, be independent discrete random variables. Let A= X(Y+Z) and B= XY With A, B, X, defined as before, determine wheter the folllowing statements are true or false. 1. A and B are independent 2. A and B are conditionally independent, given X = 0.

    asked by P
  3. math

    Explain the steps to solve this problem 0.000027 divided by 0.000009

    asked by therealcharmxdude
  4. history

    Which document enumerates the limitations of the federal government and the personal freedoms of United States citizens? Declaration of Independence Bill of Rights Articles of Confederation Albany Plan of Union B?

    asked by Michael
  5. Algebra

    How many ounces of a 26% alcohol solution and a 32% alcohol solution must be combined to obtain 34 ounces of a 29% solution?

    asked by Jennifer
  6. Maths

    Find the zeros of the polynomial f(x)=2x3-7x2-3x+18

    asked by Ande2
  7. Science -

    "To lift an object weighing 12,000N, how much force is needed on a piston with an area of 0.060 m^2 if the platform being lifted has an area of 3.0 m^2?"

    asked by Rene
  8. Physics

    A piston in a car engine has a mass of 0.75kg and moves with motion which is approximately simple harmonic. If the amplitude of this oscillation is 10 cm and the maximum safe operating speed of the engine is 6000 revolutions per minute, calculate: a)

    asked by Nazrawi
  9. Physics

    An experiment is carried out to measure the spring constant of a spring. A mass of 500 g is suspended on the spring. It is pulled down a small distance and the time for 20 oscillations is measured to be 34 s. a) explain why the mass performs simple

    asked by Nazrawi
  10. linear algebra

    The reduced row-echelon form of the augmented matrix for a system of linear equations with variables x1, ... , x5 is given below. Determine the solutions for the system and enter them below. 1 0 0 -3 -3 = 4 0 1 0 -2 -5 =-1 0 0 0 0 0 = 0 If the system has

    asked by sal
  11. Statistics

    How many different hands of 4 cards can be selected from a standard 52 card deck?

    asked by Keonn'a
  12. algebra

    In the expression, a,b,c , and d are non-zero constants and ad= bc . If ac = 18 and bd = 50, what is the value of the coefficient of the xy term when the expression is multiplied out and like terms collected? (ax+by)(cx-dy)

    asked by Anonymous
  13. math

    Find an equation of the tangent line to the graph of f(x)=x+3/x^2+2 at x=1 A.5x+9y=17 B.5x+3y=9 C.9y-5x=7 D.5x+9y=7

    asked by Anonymous
  14. Physics

    A spring 20 cm long is stretched to 25 m by a load of 50 N. What will be its length when stretched by 100 N, assuming that the elastic limit is not reached?

    asked by Kabiru
  15. Gen Math

    Find the value of x 1.) 1/x = 2/3x-1 2.) x-2/2x+4 = 1/5 3.) 1/x + 1/2x = 2/3

    asked by Dar
  16. physics

    In the figure, a 5.40 kg block is sent sliding up a plane inclined at θ = 37.0° while a horizontal force Upper F Overscript right-arrow EndScripts of magnitude 50.0 N acts on it. The coefficient of kinetic friction between block and plane is 0.300. What

    asked by tresor
  17. Physics

    A cannon is fired with a muzzle velocity of 24.6 m/s with the cannon barrel at an angle of 50.0 degrees with the horizontal. Find the horizontal distance that the cannonball will travel. The answer is supposed to be 60.8 m, but I keep getting 31.3 m. How

    asked by Grace
  18. science

    Oxygen is prepared by heating KClO3. (i) What weight of O2 is obtained from 3.00 g KClO3? (ii) What is the volume of O2, measured at standard conditions? (iii) What volume does the O2 occupy if collected over water at 0.961 atm

    asked by reagan
  19. Algebra II

    A rectangular picture has a length that is twice its width. The picture has an area of 162 square inches. Fidn the dimensions of the picture.

    asked by Austin
  20. Math

    What is the perimeter & area of the sector with 100 degrees angle and radius of 20cm?

    asked by Ginate
  21. Statistics

    A baseball coach has a team of 22 players .In how many ways can be select a lineup of 9 players to start the game. ( order matters)

    asked by Keonn'a
  22. Calculus

    I am trying to find the integral of e^(6x)sin(7x). Apparently, the answer is (6e^(6x)sin(7x) - 7e^(6x)cos(7x))/85) + C and achieving the answer is mostly understandable since it involves integrating the function in parts... that is until I get to this

    asked by Lindsey
  23. Maths

    The remainder when the polynomial f(x)=2x3+px2+qx+18 is divided by (x-1) is 10, when it is divided by (x+1) the remainder is R find (1) The values of p and q (2) The zeros of f(x)

    asked by Ande2
  24. Math

    The product of two positive numbers is 35 and their difference is 2. What is the sum of the two numbers?

    asked by Jennifer
  25. science

    i was wondering what the balance equation this would be NaOH + H3PO4 --> Na3PO4 + H-OH (H20) thank you

    asked by lauren
  26. maths

    The remainder when the polynomial f(x)=2x3+px2+qx+18 is divided by (x-1) is 10, when is divided by (x+1) the remainder is 12, find (a) The values of p and q (b) The zeros of f(x)

    asked by Ande2
  27. Statistics

    How many two-person committees can be selected from a set of 8 people. 8nCr2=28 I need a reason why it is 28 when you input it into the calculator

    asked by Keonn'a
  28. psychology

    What are negatives and positives of group think?

    asked by emma
  29. physics

    A plane leaves toronto and flies with an airspeed of 360.0 km/h always pointing east. A wind is blowing at 65.0 km/h [S 35.0 degrees E]. What is the plane's velocity relative to the ground? What is the plane's displacement from Toronto after flying for 2.4

    asked by eggo
  30. Algebra

    The members of set A are the integer solutions of the inequality 2x−5≤11 and the members of set B are the integer solutions of the inequality −2x+7≤−9. What is one member of the intersection of A and B?

    asked by Sam
  31. history

    “To understand political power right, and derive it from its original, we must consider, what state all men are naturally in, and that is, a state of perfect freedom to order their actions, and dispose of their possessions and persons, as they think fit,

    asked by KAKE
  32. English

    I appreciate your help. One more time, I posted the questions concerning the use of prepositions. Would you check the questions? Thank you. 1. We ate turkey on Thanksgiving Day. 2. We ate turkey at Thanksgiving. 3. We ate turkey on Thanksgiving. [What

    asked by rfvv
  33. biology

    Does the affinity of myoglobin for oxygen change when oxygen concentration changes? Im not really sure how to answer this. I know that myoglobin has very strong affinity for oxygen so once myoglobin is in the presence of oxygen it will react right away

    asked by sean
  34. Math

    4. The animal shelter rescued 40 cats and dogs today. If 12 of them were cats, what percent of them were dogs? Should I solve by subtracting 40-12 to get the number of dogs or solve using the cats and then subtracting that from 100? 40-12 = 28 dogs 28/40 =

    asked by Jared
  35. Physics

    A mystery planet in another part of the galaxy has an acceleration due to gravity of 5.00 m/s^2. If the radius of this planet is 2.00 x 10^6 m, what is the mass of the mystery planet?

    asked by Kierstan
  36. English

    1. He caught a big fish, but he put it back. 2. He caught a big fish, but he turn it back. 3. He caught a big fish, but he returned it. 4. He caught a big fish, but he returned it back. 5. He caught a big fish, but he released it. 6. He caught a big fish,

    asked by rfvv
  37. Algebra II

    Zach borrowed $50,000 to buy a car, put a down payment on a house, and pay for student loans. Some of the money was borrowed at 5%, some at 6% and some at 7%. How much was borrowed at each rate if the annual interest owed was $3,150 and the amount borrowed

    asked by Austin
  38. Science

    Two trucks collide together and having two mass and two velocity, How can I calculate the direction of velocity two trucks after impact?

    asked by James
  39. sociology

    Why did Max Weber fear bureaucracy? He thought it would discourage the growth of capitalism. Bureaucracy dominated individuals with large, impersonal structures. Bureaucracy increased mental health conditions among office workers. Discipline and hard work

    asked by ste
  40. English

    1. What did you do on Easter Day? 2. What did you do at Easter? 3. What did you do on Easter? [Don'w we use #3?] 4. We ate turkey on Thanksgiving Day. 5. We ate turkey at Thanksgiving. 6. We ate turkey on Thanksgiving. [What about these sentences? Which

    asked by rfvv
  41. math

    the denominator of a fraction exceeds the numerator by 1. if 2 is to taken from each the sum of the reciprocal of the new fraction and 4 times the original fraction is 5. find the original fraction

    asked by anvi reddy
  42. psychology

    The use of blind or double-blind investigators in a study is done to avoid: sampling error. sample bias. uncontrollable variables. researcher bias. random error.

    asked by andrew
  43. English

    Write : - 2 x a memo(memorandum) 250 - 300 words (3 paragraphs) - a notice 200 - 300 words ( 4 paragraphs). English level : B1/ C1 Details will be attached.

    asked by Sebastian
  44. psychology

    the use of blind or double-blind investigators in a study is done to avoid: sampling error. sample bias. uncontrollable variables. researcher bias. random error. i think it is researcher bias

    asked by andrew
  45. algebra

    Solve the following system of linear equations: 2x2+4x3+2x4 = −5 5x2+10x3+5x4 = −15 x1+2x2+2x3−3x4 =3 If the system has no solution, demonstrate this by giving a row-echelon form of the augmented matrix for the system.

    asked by sal
  46. Math

    SHOW THAT LINES (x-5)/-2 = (y+3)/4 = (z-1)/6 = t AND (x+2)/4 = (y-1)/-8 = (z+6)/-12 = t ARE PARALLEL.

    asked by anon
  47. Maths

    Generate a few comporite numbers by product of two or more natural numbers.

    asked by Akshaya
  48. English

    Could someone please check my answer at the bottom and let me know if I did this correctly? If I didn't would you please give me some suggestions? I have 6 of these that I have to re-write. Thank you, Faye In this assignment, you will edit and revise

    asked by Faye
  49. physics

    a rope attached to a sledge make an angle of 40% with the ground calculate the tension in rope required to produce a horizontal component of 100N

    asked by precious
  50. Math

    x + 9 ------ = 2 13 Confused...?

    asked by Savannah Brown
  51. Physics

    Calculate the speed of light in ethyl alcohol (n=1.52).

    asked by Enalah
  52. Engineering

    Three CSTRs are used in series. The second reactor has a volume twice that of the first and third reactors. The influent flow has a concentration of 150 mg/l of A, and the flowrate is 380 l/min. The reaction is first order, the rate equation is -dCa/dt=

    asked by Anonymous
  53. maths

    Find the zeros of the polynomial f(x)=2x3-7x2-3x+18

    asked by Ande2
  54. psychology

    please explain group polarization

    asked by andrew
  55. sociology

    According to Piaget, children develop through a series of stages that: lead all children to the final and most advanced stages of logical thinking. are unpredictable and unique to each child. are unpredictable, but nevertheless lead to the most advanced

    asked by ty
  56. psychology

    According to Piaget, children develop through a series of stages that: 1. lead all children to the final and most advanced stages of logical thinking. 2. are unpredictable and unique to each child. 3. are unpredictable, but nevertheless lead to the most

    asked by andrew
  57. calculus

    Find the value of (f o g)' at x = 4 when f(u)= cos(piu/24) and u=g(x)=6sqrt(x)

    asked by Cameron
  58. algebra

    Suppose that you have a supply of a 20% solution of alcohol and a 80% solution of alcohol. How many quarts of each should be mixed to produce 60 quarts that is 65% alcohol?

    asked by robert memendez
  59. Math

    The function f(x)=x^2-ax if x is less than or equal to 1 and f(x)=ax+b if x is greater than 1 where a and b are constants. If f is differentiable at x=1 then a+b= A.-3 B.-2 C.0 D.2

    asked by Anonymous
  60. Math

    An equation of the tangent line to the graph f(x)=5x-3/3x-6) at the point (3,4) is A.7x+3y=37 B.7x-3y=9 C.7x+3y=33 D.13x+3y=51

    asked by Anonymous
  61. Math

    I need help understanding the following problem.Can someone please explain the steps to solve this problem? Thank you in advance. "A merchant made a profit of $5 on the sale of a sweater that cost the merchant $15. What is the profit expressed as a percent

    asked by Evie