1. Calculus III

    Hi, this question is about Langrange multipliers. Given f(x,y) = y^2 - x^2, subject to the constraint g(x,y) = 0.25x^2 + y^2 = 1, find the max and mins. So I found the partial derivatives for both f(x,y) and g(x,y): fx = -2x fy = 2y gx = 0.5x gy = 2y And

    asked by Justin on December 10, 2016
  2. physics

    if a plane is flying at a speed so that the apex half-angle of its shock wave is 30 degrees, what is the speed if the speed of sound is 320 m/s?

    asked by Cam on May 13, 2011
  3. Physics

    A system consists of the following masses loacted in the xy- plane: 5.0 kg at the point (0,5), 7.5 kg at the point (3,8) and 6.5 at the point (-3, -6). Find the distance from the origin to the center of mass.

    asked by Anonymous on July 29, 2015
  4. Physics

    A system consists of the following masses loacted in the xy- plane: 5.0 kg at the point (0,5), 7.5 kg at the point (3,8) and 6.5 at the point (-3, -6). Find the distance from the origin to the center of mass.

    asked by Anonymous on July 28, 2015
  5. Physics

    An object with a mass of 49 N falls out of a plane going 20.0 m/s at 300 m above the ground. 1)How do I find the time that the object is in the air? 2)The horizontal distance of the object? Could someone help me out?

    asked by mw on January 4, 2009
  6. physics

    A parachute on a person jumping from a plane opens and changes the speed of the person from 65m/s to 35m/s in a period of 4.2 seconds. What is the acceleration of the person?

    asked by vicki on September 26, 2014
  7. physics

    A plane wave is represented by the equation y=4si(230pit+0.85pix)M. find (a)the frequency (b)velocity and Wave length of the wave

    asked by pauline on July 10, 2017
  8. physics

    A parachute on a person jumping from a plane opens and changes the speed of the person from 65m/s to 35m/s in a period of 4.2 seconds. What is the acceleration of the person?

    asked by vicki on September 25, 2014
  9. Physics

    A system consists of the following masses loacted in the xy- plane: 3.0 kg at the point (0,5), 7.5 kg at the point (3,8) and 7.0 at the point (-3, -6). Find the distance from the origin to the center of mass.

    asked by BBell on July 17, 2018
  10. mult'vi calc

    Let F(x, y, z) = z tan−1(y^2)i + z^3 ln(x^2 + 10)j + zk. Find the flux of F across S, the part of the paraboloid x^2 + y^2 + z = 19 that lies above the plane z = 3 and is oriented upward. Thanks! STudying for a quiz... *tan−1 is tan^(-1)

    asked by RX on November 11, 2013
  11. Calc

    Let F(x, y, z) = z tan−1(y^2)i + z^3 ln(x^2 + 10)j + zk. Find the flux of F across S, the part of the paraboloid x^2 + y^2 + z = 19 that lies above the plane z = 3 and is oriented upward. Thanks! STudying for a quiz... *tan−1 is tan^(-1)

    asked by R on November 11, 2013
  12. english

    Zora s lemon tree produces too much fruit. She gives them away therefore, to her friends and english (Points :1) Zora' s lemon tree produces too much fruit. She gives them away, therefore, to her friends and ... (Points :1) Zora' s lemon tree produces too

    asked by sharon on July 28, 2010
  13. MATH

    if cscè= -7/10 and cosè >0. a) draw a triangle in the correct quadrant with three sides properly labled. b) find the exact value of 7cotè- 4cosè. This means no decimals. find a common denominator and rationalize all denominators. simiplify completely

    asked by joey on February 16, 2011
  14. physics

    An archer puts a 0.34 kg arrow to the bowstring. An average force of 213.1 N is exerted to draw the string back 1.48 m. The acceleration of gravity is 9.8 m/s 2 . Assuming no frictional loss, with what speed does the arrow leave the bow? Answer in units of

    asked by Anonymous on December 14, 2012
  15. math

    The rectangle shape in a set of blocks comes in two sizes( small and large ),three colors ( yellow, red, and blue ), and two thicknesses ( thick and thin ) A. Draw a tree diagram to find the total number of outcomes. B. How many outcomes are possible?

    asked by peter on April 30, 2013
  16. math

    if csc= -7/10 and cos >0. a) draw a triangle in the correct quadrant with three sides properly labled. b) find the exact value of 7cot- 4cos. This means no decimals. find a common denominator and rationalize all denominators. simiplify completely.

    asked by joey on February 16, 2011
  17. Science

    What is the structural formulae for the equation for the hydrolysis of lactose? It is impossible for us to draw structures on the computer. Here is a web site that may help you. http://www.rpi.edu/dept/chem-eng/Biotech-Environ/IMMOB/lactose.html

    asked by Samantha on February 10, 2007
  18. physics

    a car travel with a uni form velocity of 25m/s for 5& the brak over then applied and the car coms the rest wirh a uniform retar in fyrther 10s draw ut grph and use it to find 1 distance covered 2 the reatardation

    asked by ramesh on June 20, 2014
  19. math

    if csc= -7/10 and cos >0. a) draw a triangle in the correct quadrant with three sides properly labled. b) find the exact value of 7cot- 4cos. This means no decimals. find a common denominator and rationalize all denominators. simiplify completely

    asked by joey on February 16, 2011
  20. physics

    An archer puts a 0.26 kg arrow to the bowstring. An average force of 184.5 N is exerted to draw the string back 1.26 m. The acceleration of gravity is 9.8 m/s 2 . Assuming no frictional loss, with what speed does the arrow leave the bow? Answer in units of

    asked by Anonymous on March 28, 2013
  21. physics

    An archer puts a 0.39 kg arrow to the bowstring. An average force of 196.3 N is exerted to draw the string back 1.28 m. The acceleration of gravity is 9.8 m/s 2 . Assuming no frictional loss, with what speed does the arrow leave the bow? Answer in units of

    asked by NeedHelp on December 10, 2014
  22. English 12

    Question 1 of 20 5.0 Points Critical Reading Identify the letter of the choice that best completes the statement or answers the question. What is Mr. Gradgrind’s opinion of horse riders? A. He does not approve of them. B. He is fascinated with them. C.

    asked by Daja on April 17, 2012
  23. Introduction to Business Environment Chapter 2

    The world's population is growing more slowly than expected, and there are some industrial countries in which growth might be so slow that there will be too many old people and too few young people to support them. (Points : 1) True False 2. In a free

    asked by David on March 10, 2013
  24. Grammar and Composition

    Body The middle part of your paper is the body of the paper. It develops the most important points, which support your thesis statement. It contains three paragraphs. These paragraphs follow the points listed in the three-step format. Paragraph 2 (first

    asked by y912f on October 22, 2009
  25. macro economics

    For each event, illustrate the impact on the relevant market and determine what will happen to the equilibrium price and quantity in that market. (40 points – 10 points per line item) Event Market for: Show which curve shifts Equilibrium price rise or

    asked by Destinie on July 29, 2011
  26. Calculus AP Exam review explanation pls

    1)What is the area bounded by y = x^2 and y =3x? A)5 B)9/2 ***C)8 D)11.2 E)25 i believe it to be 8 but im not sure. 2)The region R is bounded by the x-axis, x = 2, and y = x^2. Which of these expressions represents the volume of the solid formed by

    asked by ReviewDay :( on March 3, 2017
  27. Physics 1

    A catapult 100 m long launches a 3.0 x 10^4 kg jet from the deck of a carrier. Starting at rest, the plane takes off with a speed of 80 m/s. Find: a)The acceleration, b) the average force, c) the work done, d) time to accelerate , e) the power developed.

    asked by John on November 28, 2012
  28. history

    please help me with this because of its reliance on aircraft to carry nuclear weapons, the United States lagged behind the Soviet Union in a. hydrogen bomb testing b. spy plane technology c. missile development d. destroyer and cruiser construction thanks

    asked by history on April 20, 2009
  29. Math

    A triangle is graphed in the coordinate plane. The vertices of the triangle have coordinates (5, 1), (1, 1), and (1, 7). What is the perimeter of the triangle? 28 24 14---- my answer 10

    asked by Sara on January 23, 2015
  30. math

    In the x y − xy− plane, the center of a circle has coordinates ( 6 , 10 ) (6,10) and the circle touches the y − y− axis at one point only. What is the radius of the circle

    asked by keke on June 26, 2017
  31. math

    Find the area of the following plane figure. Use = 3.14. A circle has a radius of 8 cm. What is its area? Area (to the nearest tenth) =

    asked by C on July 5, 2016
  32. SOCIAL STDIES HELP!

    5. Which of the following is true about the Atlanta Riot of 1906? (Choose all that apply.) (2 points) A mob attacked African Americans in downtown Atlanta.*** Blacks began the riot in white neighborhoods. It eventually led to improved race relations

    asked by XenaGonzalez on March 30, 2015
  33. Trigonometry

    An airplane approaches an airport. At a certain time, it is 939 m high. Its angle of elevation measured from the airport is 19.5◦. To the nearest metre, how far is the plane from the airport?

    asked by Anonymous on November 9, 2014
  34. Physics

    A block slides down a frictionless plane having an inclination of 13.0°. If the block starts from rest at the top and the length of this incline is 1.62 m, find the acceleration of the block.

    asked by Bala on November 1, 2010
  35. Physics

    A block slides down a frictionless plane having an inclination of 14.3°. If the block starts from rest at the top and the length of this incline is 1.77 m, find the acceleration of the block.

    asked by Lucy on October 25, 2008
  36. Calculus

    A tetrahedron is formed in the rst quadrant by the three coordinate planes and the plane that meets the x-axis at a > 0, the y-axis at b > 0 and the z-axis at c > 0. Compute its volume. Kindly help

    asked by Asfand on June 21, 2016
  37. science

    A lump of ice falls from an airplane as it comes it to land. If the ice hits the ground with a vertical speed of 85 m/s, what was the height of the plane when ice feel off?

    asked by Anonymous on July 2, 2016
  38. algebra

    A jet flies with the wind at 1100 km/hr and 750 km/hr against the same wind. Find the rate of the wind and the speed of the plane show the equation for solving

    asked by denice on May 27, 2012
  39. Physics

    Standing 2.5 m in front of a plane mirror with your camera, you decide to take a picture of yourself without turning the camera around. To what distance should the camera be focused to get a sharp image?

    asked by Bob on May 31, 2012
  40. math

    two lines intersect in a plane and form four angles. one of the angles formed by this intersection is a 53degree angle. What are the measures of the other three angles? explain your answer

    asked by zay on March 3, 2010
  41. calc

    he base of a solid in the xy-plane is the circle x^2 + y^2 = 16. Cross sections of the solid perpendicular to the y-axis are semicircles. What is the volume, in cubic units, of the solid?

    asked by Anonymous on June 27, 2015
  42. Trigonometry

    A passenger in an airplane flying at an altitude of 10 kilometers sees two towns directly to the left of the plane. The angles of depression to the towns are 28° and 55°. How far apart are the towns?

    asked by AwesomeGuy on February 4, 2013
  43. maths

    Two pole of heights 6m and 11m stand on a plane ground. If the distance between their feet is 12m, determine the distance the distance between their poles. Please help me its urgent

    asked by manavi on August 23, 2014
  44. social studies 8thssss

    What was the impact of the New Deal programs on Georgians? (Choose all that apply.) (3 points) Electricity was brought to rural areas.*** Relief was brought to citizens through the state or local governments.*** Elderly and unemployed workers were provided

    asked by XenaGonzalez on May 11, 2015
  45. English

    1. Korea drew the game against Japan. 2. Korea tied the game against Japan. 3. Korea and Japan drew in the game. 4. Korea and Japan tied in the game. 5. The game between Korea and Japan ended/finished in a draw. 6. The game between Korea and Japan

    asked by rfvv on November 21, 2016
  46. math

    The scatter diagram of midterm scores and final scores in a large class is football shaped. For about 80% of the students, the regression estimate of final score based on midterm score is correct to within 15 points. For about 95% of the students, the

    asked by eh on March 28, 2013
  47. Maths

    The diameter of a ball bearing is to have an average of 2.0 Cm. A random sample of 10 bearings is selected every hour to check the diameters. The sample selected at 9 a.m. gave the following measurements: 2.02, 2.04, 2.00, 1.98, 1.98, 2.04, 2.04, 2.00,

    asked by Naveen on December 9, 2011
  48. chem

    A molecular compound is composed of 58.8% Xe, 7.2% O, and 34.0% F, by mass. If the molecular weight is 223 g/mol, what is the molecular formula? Draw the correct Lewis structure. Predict the molecular geometry using the VSEPR model.

    asked by chemistry on December 13, 2010
  49. physics

    A passenger with mass of 80 kg stands on the floor of an elevator of mass 250 kg as it accelerates upward with an acceleration of 3 m/s^2. Determine the tension in the elevator cable. Draw a free-body diagram.

    asked by hello on September 30, 2011
  50. homework help site w/ all subjects?

    does any one know of any other homework help site where people can draw stuff and explain things, the site covers all subjects, but i forget wat the site is, and i dotnt want a paying site like stupid tutor vista..

    asked by any other hmwrk help site? on January 14, 2008
  51. 6th grade math

    Mark is alternating sqaure tiles with lengths of 4in and 2 in. along the edge of a 6 foot long wall. If he starts with a 4 in tile and ends with a 2 in tile, how many tiles will he use in all? Draw a diagram to solve.

    asked by Mary Ellen on March 3, 2014
  52. Mathematicz (The Correct Question)

    A pipe has an outer radius of 4 1/2 cm. If the metal is 1/4 cm thick, what is the inner diameter of the pipe? Please help me!!! You not you just subtract from the or the wall thickenss, then double it to get the id? Draw two concentric circles and see if

    asked by Ayra on September 12, 2006
  53. Science

    Hello van some one show me how to draw a dot and cross diagramm for 1 lithium atom and 1 fluorine atom(Lif) and also a diagram for 1 magnesium atom and 1 oxygen atom (MgO) Thankyou Paul.

    asked by Paul on March 28, 2011
  54. Chemistry - Molecular orbital Config

    I'm having trouble with this problem on my homework, We are supposed to write the molecular orbital config for a molecule. Could someone walk me through the process of how to do this and I'll see if I can get the hang of it? What I have to draw is a

    asked by Kevin on May 2, 2010
  55. GEOMETRY

    If a diagnol for a rectangle ABCD was measured to be 20 and a square was put in it slanted(looking like a rhombus). This rhombus is called EFGH. Prove find the perimeter of EFGH. (IT IS EASIER TO DRAW IT THEN SOLVE IT =))

    asked by JEFF BOMB on November 14, 2009
  56. 8th Grade Algebra

    Draw two squares of appropriate size to compare the areas of Alaska (591,004 miles squared) and Texas (266,807 miles squared). * I don't get how to set up and do this problem.

    asked by Joy on December 3, 2008
  57. Math

    The local swimming pool is having a contest and all students are welcome to enter. The pool officials want a new logo that has rotational symmetry with 120⁰ and 240⁰ as its angles of rotation. Draw an entry for the contest.

    asked by Amy on February 8, 2018
  58. english

    copy the following sentences onto your paper. draw a vertical line between the complete subject and the complete predicate. underline each subject once and each verb twice? 1) we hear stories about cowboys and life in the old west

    asked by mekia on September 10, 2012
  59. GEOMETRY

    Find the exact length of the altitude drawn to the hypotenuse. Do not round. The triangle is not drawn to scale. A triangle with base measures of 9 & 17. Draw a diagram. Using similar triangles, we know that h/9 = 17/ã370 I need more help with this.

    asked by Anonymous on February 13, 2015
  60. GEOMETRY

    If a diagnol for a rectangle ABCD was measured to be 20 and a square was put in it slanted(looking like a rhombus). This rhombus is called EFGH. Prove find the perimeter of EFGH. (IT IS EASIER TO DRAW IT THEN SOLVE IT =))

    asked by JEFF BOMB on November 14, 2009
  61. college physics

    Which of the following statements about special relativity is false? a).The proper length of an object is always larger than the length of the object in a frame where it is moving. b).The proper length of an object depends on the relative speed between the

    asked by Lexi on October 4, 2010
  62. Physics HELP!!!!!!!!

    For the normal force in Figure 5.21 to have the same magnitude at all points on the vertical track, the stunt driver must adjust the speed to be different at different points. Suppose, for example, that the track has a radius of 3.1 m and that the driver

    asked by Mary on February 21, 2007
  63. Statistics

    Suppose that on average 10% of the people with an airline-ticket doesn't show up at the flight.For a certain flight, the plane has 100 seats and 110 tickets are sold. What is the probability that everyone who shows up will have a seat?

    asked by Rechal on March 7, 2017
  64. physics

    You are piloting a small plane, and you want to reach an airport 450 km due south in 2.0 hours. A wind is blowing from the west at 75 km/h.What heading and airspeed should you choose to reach your destination in time?

    asked by alivia on October 8, 2010
  65. Physics

    When a force of 500 N pushes on a 25-kg box, the acceleration of the box up the incline is 0.75 m/s^2. If the inclined plane makes an angle of 40 degrees relative to the horizontal level, what is the coefficient of kinetic friction?

    asked by ylopez on July 5, 2016
  66. Physics

    A 7200 lb airplane lands on an aircraft carrier with a speed of 72 ft/s. The plane is caught by an elastic band (k=998 lb/ft) that has an initial stretch of 5.6 feet. What is the maximum distance the band is stretched?

    asked by sandhu on November 29, 2010
  67. Physics

    The pilot of an airplane traveling 160 km/h wants to drop supplies to flood victims isolated on a patch of land 160m below. The supplies should be dropped how many seconds before the plane is directly overhead?

    asked by Lilly on January 17, 2016
  68. another speed

    At 10:00 AM Two planes leave an airport. If the northbound plane flies 280 mph and the sound bound at 320 mph, at what time will they be 1000 miles apart? I need help with explanations the questions keep changing :(

    asked by Rells on January 17, 2015
  69. physics

    A circular coil of 30 turns and radius 7 cm is placed with its plane oriented at 90 degrees to a magnetic field of 0.1 T. the fieldis now increased at a steady rate, reaching a value of 0.7 T after 5 seconds. when emf is induced in the coil

    asked by edward on November 24, 2010
  70. THEORY OF MACHINE

    A steel bar 10 m long and 10 cm * 2.5 cm in section. It is subjected to axial pull of 250 KN. Determine the intensities of normal and tangential stresses on a plane section at 60 degree to the longitudinal axis.

    asked by rajesh jain on January 12, 2013
  71. physics

    A stunt flier is moving at 15m/s parallel to the flat ground 100m below,how large must the distance x from plane to target be if a sack of flour released from the place is to strike the target?

    asked by Ruth on October 8, 2017
  72. physics

    A 15kg model plane flies horizontally at a constant speed of 12.5 m/s and the kinetic energy is 1171J and the potential energy is 3000J what is the new horizontal velocity? Please show work and explain.

    asked by Kim on January 17, 2011
  73. physics

    You are piloting a small plane, and you want to reach an airport 450 km due south in 3.0 hours. A wind is blowing from the west at 80 km/h. What heading and airspeed should you choose to reach your destination in time?

    asked by Lucy on October 13, 2010
  74. physics

    PLEASE HELP !!!!!!Find the acceleration reached by each of the two objects shown in figure below if the coefficient of kinetic friction between the 7.00 kg object and the plane is 0.250. img411.imageshack.us/img411/5841/p449.gif I keep getting 3.9=a

    asked by bill on September 14, 2010
  75. 6th Grade Math

    If a plane is going on a 500 mile trip, how many minutes will it take to get there for a speed of 400, 300, 200, and 100 mph? For 500 it wil obviously take 1 hour, but my brain is dead today and I can't figure out the other four.

    asked by Mika on December 1, 2009
  76. L A

    The Giver At the beginning of the novel, Jonas describes himself as apprehensive. Why is he apprehensive? 1:An unknown plane is flying overhead 2:The Ceremony of Twelves is coming soon. 3: A loudspeaker orders everyone inside. I pick # 1...is this correct?

    asked by Marylyn on May 18, 2015
  77. Physics

    A gyroscope with rotational inertia 6.4 10-3 kg·m2 is precessing in a horizontal plane at 0.46 rad/s under the influence of a 0.31 N·m torque caused by a force pointing vertically downward. How fast is the gyroscope spinning on its axis?

    asked by Jake on November 9, 2012
  78. physics

    A parachustist jumps from an airplane and freely falls y=51.8 m before opening his parachute. Thereafter, he decelerates at a=1.86 m/s^2. As he reaches the ground, his speed is 3.04 m/s. a)How long was the parachutist in the air? b)At what height did the

    asked by Anonymous on September 19, 2009
  79. physics

    The pilot of an airplane traveling 240 km/h wants to drop supplies to flood victims isolated on a patch of land 160 m below. The supplies should be dropped how many seconds before the plane is directly overhead?

    asked by Sarah on September 21, 2010
  80. Science

    A block of metal weighing 2kg is resting on a frictionless plane. It is struck by a jet releasing water at the rate of 1kg/s and at a speed of 5m/s. Find the initial acceleration of the block.

    asked by Kushagra on February 10, 2012
  81. science

    The pilot of an airplane traveling 180km/h wants to drop supplies to flood victims isolated on a patch of land 160m below. The supplies should be dropped how many seconds before the plane is directly overhead?

    asked by Kayla on August 22, 2013
  82. physics - HELP

    A parachustist jumps from an airplane and freely falls y=51.8 m before opening his parachute. Thereafter, he decelerates at a=1.86 m/s^2. As he reaches the ground, his speed is 3.04 m/s. a)How long was the parachutist in the air? b)At what height did the

    asked by Anonymous on September 20, 2009
  83. math

    Given the following set, select the statement below that is true. V = {a, e, i, o, u} (Points : 2) v ∈ V a ∈ V y ∈ V o ∉ V V Ø

    asked by nette on April 6, 2011
  84. calculus

    Plot three points with first coordinate equal to (-2.8) and join them

    asked by hadasha on March 2, 2015
  85. English

    cesorship in writing for students.. give three points... i only have one..

    asked by Kiran on October 12, 2009
  86. logic

    A conditional sentence with a false antecedent is always (Points : 1)

    asked by Anonymous on October 8, 2012
  87. Math-PLEASE HELP ASAP

    how do I find the two sets of points for the following algbrea equation? y=-3x+2

    asked by Michelle on June 27, 2010
  88. Math

    What is the slope of the line that passes through the pair of points? (-2,7),(18,1) a. -10/3 b. -3/10 c. -4/9 d. -9/4

    asked by Kaai97 on January 26, 2016
  89. Math

    The distance between the points (14,-18) and (15,-8) is? The point (a,b) is such that (14,-18) is the midpoint of the segment from (15,-8) to (a,b). Then a and =?

    asked by Bob on January 23, 2011
  90. Math

    find the points on x^2+y^2=11 where the tangent line has slope 11/60

    asked by JAYZ on February 5, 2014
  91. geometry

    find all points of form (x,-1) 4 units from point (3,2)

    asked by liz on January 24, 2011
  92. Math

    If u have a hundred points and split it into 4 . But you cant use a number more than once. What numbers would you use.

    asked by Lexi on December 4, 2009
  93. math

    Find the equation of the line that passes through the points (3,-1) and (0,-3)

    asked by Ann on October 26, 2009
  94. english

    The text of the question or statement prompt goes here. (Points : 1)

    asked by Niyah on November 16, 2016
  95. ball state

    Write the equation of the line passing through points (3, -2) and (6, 4).

    asked by Anonymous on February 9, 2014
  96. Math

    Find the equation of the line that passes through the given points (1,5) and (2,0) y=-5/1x+10

    asked by M on November 3, 2014
  97. Calculus

    Do points of inflection have to be defined in the original function?

    asked by Jess on October 30, 2010
  98. Math

    A line has a slope of m = -1/3 and passes through the points (-4,k) and (2,3). Fine the value of k

    asked by Anna on August 15, 2011
  99. math

    Find the distance between points (1, 6) and (2, 3) to the nearest tenth.

    asked by mazani on March 30, 2014
  100. algebra

    what is the slope of the line that passes through the pair of points (-2,1) (2,17)

    asked by heaven on May 2, 2016