1. Calculus AP

    Let R be the region bounded by the graphs of y=cos((pi x)/2) and y=x^2-(26/5)x+1. A. Find the area of R. B. The vertical line x=k splits the region R into two equal parts. Write, but do not solve, an equation involving integrals that solves for k. C. The
  2. Math

    Find the product 8 1/3 x 3/5 in simplest form Find the product 5 1/2 x 3 1/3 in simplest form Use distributive property to find the product 4 2/5 x 10
  3. quadratic word problems

    a rectangular swimming pool has a perimeter of 24 feet. what should the dimesions of the pool be to create a maximum area? what would this area be? If x is the one side's dimension, the adjacent side's dimension is 12 - x. (That makes the perimeter 24).
  4. physic

    A spring has stiffness of 100Nmm, the initial compression of the spring is 15mm, and it is then compressed to 65mm. •1Nmm = 0.001Nm •100Nmm = 100 X 0.001 = 0.1Nm •Comp.1 = 15 mm = 0.015m •Comp.2 = 65 mm = 0.065m a) i-Find potential energy at 15mm.
  5. math

    how do you find the interval Interval between what and what? Since I am not sure what you are asking, I searched Google under the key words "find interval" and "find interval math" to get these possible sources:
  6. CALCULUS

    The region R is bounded by the x-axis, y-axis, x = 3 and y = 1/(sqrt(x+1)) A. Find the area of region R. B. Find the volume of the solid formed when the region R is revolved about the x-axis. C. The solid formed in part B is divided into two solids of
  7. Probability

    Consider three random variables X, Y, and Z, associated with the same experiment. The random variable X is geometric with parameter p∈(0,1). If X is even, then Y and Z are equal to zero. If X is odd, (Y,Z) is uniformly distributed on the set
  8. calculus

    given y = 4x-3 find the minimum value of xy. find the rate of change of xy with respect to x. find the rate of change of xy with respect to y.
  9. Physics

    Vertical beam of mercury (Hg atomic mass =202u) atoms emerges from the oven kept at T= 400K. Consider three atoms, emerging from the oven: one with the average speed, one with the rms speed, and the other with the most probable speed of the Maxwellian
  10. ap physics

    A force of magnitude Fx acting in the x-direction on a 2.55-kg particle varies in time as shown in the figure below. (Indicate the direction with the sign of your answer.) (a) Find the impulse of the force. (Give your answer to one decimal place.) kg ·
  11. Calculus 2

    I am having so many problems with these volume problems, 1. Find the volume of a the solid obtained by rotating the region enclosed by: x = 2y and y^3 = x with y>0 about the x axis 2.Find the volume of cone of height h = 250 and a circular base with
  12. Physics

    A model airplane with a mass of 0.748 kg is tethered by a wire so that it flies in a circle 30.2 m in radius. The airplane engine provides a net thrust of 0.806 N perpendicular to the tethering wire. (a) Find the torque the net thrust produces about the
  13. Physics

    A 2m radius uniform 50kg disk has an object of unknown moment of inertia screwed into its center. A constant external force of 200N is applied tangentially to the disk's rim. A constant torque due to kinetic friction of 180Nmrad is present throughout the
  14. math

    We fire a missile from ground level at 1750 ft/sec. at launch angle of 10 degrees. h(t) =-16t^2 + vot +h a. find a function for height as a function b. find a function for distance from launch point as a function of time. c. when will the missile reach max
  15. physics

    The drawing shows a force vector vector F that has a magnitude of 600 newtons. It lies at alpha = 67° from the positive z axis, and beta = 31° from the positive x axis. (that's the diagram given) webassign. (delete this space) net/CJ/p1-39alt.gif (a)
  16. PreCalc

    Naturalists find that the populations of some kinds of predatory animals vary periodically. Assume that the population of foxes in a certain forest varies sinusoidally with time. Records started being kept when t = 0 years. A minimum number, 200 foxes,
  17. physics

    Consider an old-fashion bicycle with a small wheel of radius 0.15 m and a large wheel of radius 0.8 m. Suppose the rider starts at rest, accelerates with a constant acceleration for 2 minutes to a velocity of magnitude 12 m/s. He maintains this velocity
  18. Biology please help

    I have a project due tomorrow and i cant find a good place to start. Cardiacmuscle disease is a disease that is a result of the cytoskeleton not functioning properly. I cant find anything on cardiac muscle disease. THIS IS NOT CARDIOMYOPATHY
  19. Trignometry

    A car is moving at a rate of 55 mph and the diameter of its wheels is 2 feet. A) Find the number of revolutions per minute the wheels are rotating. B) Find the angular speed of the wheels in radians per minutes.
  20. psy

    Logical inquiry: Find two reliable sources that provide a balanced view of internal versus external locus of control. Reference these sources in your response. Ms. Sue could you help me find those sources. thanks.
  21. physics

    The resistance of a 395 m long aluminum rod is 3580 . A. Find the cross-sectional area of the rod mm2 B. Find the current in the rod when a potential difference of 14 V is applied across the ends. A
  22. sociology

    Which of three theoretical perspectives best explains the fact that Americans find work roles psychologically satisfying but also find them to stressful? Functional theory conflict theory symbolic interaction theory
  23. English Communication

    6. Each of the following words has the suffix -ed. Which word is spelled correctly? A. Plotted B. Preenned C. Duckked D. Cleanned 8. When reading a newspaper, you come across the word subterranean. You guess the meaning of the word by breaking it into its
  24. physics

    A car (mass = 860 kg) is at rest on the top of a tall hill. the car rolls down the hill and at the bottom, reaches a top speed of 19 m/s. A) find the force of gravity on the car 560 x 9.8 = 5488 N B) find the work done by gravity on the car W = change in
  25. statistics help

    Complete the hypothesis test with alternative hypothesis ƒÊd ‚ 0 based on the paired data that follows and d = O - Y. Use ƒ¿ = 0.01. Assume normality. Oldest 188 174 192 196 65 Youngest 186 168 199 199 69 (a) Find t. (Give your answer correct to
  26. Math

    How do you find the point of intersection(s) for x = 2y2 + 3y + 1 and 2x + 3y2 = 0 A) You cannot find points of intersections for non-functions. B) Plug in 0 for x into both equations and solve for y. Then plug that answer back into the other equation to
  27. algebra 2

    The larger of two numbers in 8 times the smaller. The difference between them is 42. Find the numbers. Write the equations. Find the numbers
  28. Math

    An object moves along the path x^2 - y^2 = 5. At the point (-3, 2),dx/dt = -4. Find dy/dt at that same point. I understand that dy/dt of the function is y' = x/y but I am not sure how to find it at that specific point. Could you please help? Thank you!
  29. geometry

    in triangle GHJ, k(2,3) is the midpoint of GH, l(4,1) is the midpoint of HJ and m(6,2) is the midpoint of GJ. Find the coordinates of G,H and J. can you please show me how to find this? i don't really understand how it would be done. thank you.
  30. geography

    I am trying to find this: how do we find the country's rank population such as upper class, lower class, and middle class?
  31. Math

    Find x in triangle Exterior is 120 degrees and 20 degrees Find interior x 180 degrees total
  32. math/ algebra

    how can i find the numbers Quadratic equation the sum of 2 whole numbers is 23. their product is 120. find the numbers
  33. advanced math

    Hi, My equation is 4x^2-8. I think the independent variable for the equation is 4 and the dependent is x. Is that right? I also have to find the domain and range but I'm not sure how to find those for this equation.
  34. MATH

    A set of 50 data values has a mean of 18 and a variance of 4. I. Find the standard score (z) for a data value = 20. II. Find the probability of a data value < 20.
  35. Pre Algebra

    the problem is that I have to find the length of x. Here's what they say: Find the missing length, when the perimeter is 9x+11 then here are the length that are given on the shape: 2x+3 and 3x+1 How could I solve this?
  36. Statistics

    A set of 50 data values has a mean of 35 and a variance of 25. I. Find the standard score (z) for a data value = 26. II. Find the probability of a data value > 26.
  37. Algebra 2

    I need help, and I can't find the answer. Can you explain how to do this please? I don't want the answer only, I need to know the answer, and how to find it. Thank you!! 9. What is the equation of the absolute value function? (1 point) y = 6|x + 2| –2 y
  38. Korean: Tae kwon do

    For my class I need to find the difference between a L stance, fixed stance, and vertical stance. Where can I find this?
  39. Calc I

    if f(t)=sqrt(4t+1) find f''(2) I got the first derivative to be: 1/2(4t-1)^-1/2 * 4t^3 and i'm trying to figure out if i need the product rule again to find the second derivative -1t^3(4t-1)^-3/2 * 4t^3 The answer if -4/27 and I'm not sure how to get that
  40. Homework Help

    A set of 50 data values has a mean of 48 and a variance of 9. I. Find the standard score (z) for a data value = 43. II. Find the probability of a data value < 43.
  41. Chemistry

    How would i find the hybridization of the central atom in NO3^- and CH2Br2? Also, in general how would I find the hybridization of something, and what is hybridization (I'm very lost)?
  42. math

    The ladders shown below are standing against the wall at the same angle. How high up the wall does the longer ladder go? (All measurements are in feet.) ladders 11.25 ft 12.5 ft 14 ft 14 ft 2. The pair of polygons is similar. Find the value of x. polygons
  43. Physics

    A ball is thrown horizontally from the top of a building 45.9 m high. The ball strikes the ground at a point 121 m from the base of the building. The acceleration of gravity is 9.8 m/s2 . Find the time the ball is in motion. Answer in units of s Find the
  44. CJS/240

    Will someone please help me find a website to find the answers to the following? Write a 350- to 700-word paper comparing and contrasting the role of the defense counsel with that of the prosecutor. Include an explanation of prosecutorial discretion and
  45. English

    I trying to find out what life was like in England in 1564 on rich and poor people, what jobs, kind of places they lived, social life, how much money to live, what food and drink they had. I have been unable to find a website that gives me this
  46. electromagnatic

    a) Find the forces per unit length on two long, straight and parallel conductors, if each carries a current of 10.0 A in the same direction and the separation distance is 0.20 m. b) Find the maximum torque on an 85-turn, rectangular coil, 0.2 m by 0.3 m,
  47. algebra

    Find the coordinates of the points of intersection of the graph of y=13−x with the axes and compute the area of the right triangle formed by this line and coordinate axes. can u guys plz find answer + explain this problem is really hard and confusing
  48. Math

    I need to research the following fractal-related topics and find enough information to write five sentences. a. a Peano curve b. the devil's staircase c. self-similarity d. space-filling curve I also need to find out how the concept of fractals is applied
  49. Technology Education

    How can the sort feature Microsoft excel help you? A. It can organize the data to find information easily •• B. It can ensure everything is spelled accurately C. It can check the accuracy of the data D. It can total up the number to find the sum
  50. Algebra

    a. Pick 9 different dog breeds and find their average weights. List each breed and weight. Find the mean, median, and mode of the data. Which measure of central tendency best describes the data? Explain your answer. please help I have no idea what I'm
  51. Algebra

    Solve each system graphically. 4y = x + 8 3x - 2y = 6 Basically, what I have to do is find at least one point that works. I tried graphing it on graph paper, and it looked like about (1, 3.5). But when I tried placing in the equations, it did even work in
  52. Math Help!

    1.Find the percent of decrease. Round your answer to the nearest tenth of a percent where necessary. 75 to 60 A. 20% B. 30%*** C. 40% D. 50% 2. Find the percent markup. Round to the nearest whole percent. Store's cost: $100.00 Selling Price: $160.00 A. 50%
  53. Math Help!

    1.Find the percent of decrease. Round your answer to the nearest tenth of a percent where necessary. 75 to 60 A. 20% B. 30%*** C. 40% D. 50% 2. Find the percent markup. Round to the nearest whole percent. Store's cost: $100.00 Selling Price: $160.00 A. 50%
  54. Physics

    On the map, let the +x-axis point east and the +y-axis north. A)An airplane flies at 990 km/h northwestward direction (i.e., midway between north and west). Find the components of its velocity. B)Repeat for the case when the plane flies due south at the
  55. Sociology of Sports

    Would Someone PLEASE HELP? 1.Deviant overconformity is associated with some forms of violence in sports. The roots of this violence are grounded in (d) A. a desire for self-fulfillment and personal satisfaction. B.a lack of loyalty to team rules. C.the
  56. math

    A line with negative slope passes through the point P(5,2) and intersects the x-axis at the point A and the y-axis at the point B. a. Find the equation of the line for which the length of the segment AB is the smallest. b. Find the equation of the line for
  57. Math help

    We have no ideal on how to start this problem, we have look for it on the charts, did not see. Please help Consider the following. (Give your answers correct to two decimal places.) (a) Find the standard score (z) such that the area above the mean and
  58. Math help

    We have no ideal on how to start this problem, we have look for it on the charts, did not see. Please help Consider the following. (Give your answers correct to two decimal places.) (a) Find the standard score (z) such that the area above the mean and
  59. math

    The equation P=240I-8I^2 represents the power, P, (in watts) of a 240 volt circuit with a resistance of 8 ohms when a current of I amperes is passing through the circuit. (a)Find the maximum power (in watts)that can be delivered in this circuit. (Find the
  60. math

    Biologists want to set up a station to test alligators in the lake for West Nile Virus. Suppose that the costs for such a station are $3,000 for setup costs and $4.00 to administer each test. a. Write an expression that gives the cost(C) to test animals.
  61. PreCalc

    1) Determine the value of r (put this number in the first blank) and then determine the value of the 10th term of the geometric sequence. Do not use any decimals or mixed numbers in your answers. Reduce all fractions to lowest terms. a1 = 2 and a4 =
  62. physics

    The figure below shows a cubical box that has been constructed from uniform metal plate of negligible thickness. The box is open at the top and has edge length L = 39 cm. (a) Find the x coordinate of the center of mass of the box. (b) Find the y coordinate
  63. calculus

    1. Consider the function f(x) = X^(4/3) +4x^(1/3) on the interval -8 ≤ x ≤ 8. a. Find the coordinate of all points at which the tangent to the curve is a horizontal line. b. Find the coordinate s of all points at which the tangent to the curve
  64. calculus

    1. Consider the function f(x) = X^(4/3) +4x^(1/3) on the interval -8 ≤ x ≤ 8. a. Find the coordinate of all points at which the tangent to the curve is a horizontal line. b. Find the coordinate s of all points at which the tangent to the curve
  65. physics

    Vector V1 is 6.4 units long and points along the negative x axis. Vector V2 is 8.9 units long and points at 60 degrees to the positive x axis 1) find x and y components of v1 and v2? 2) find magnitude of the sum v1+v2? 3) find the angle of the sum v1+v2? I
  66. trigonometry

    suppose a manufacterer of transistors believes that, on the average, one defective transistor occurs in every 100 transistors. a. find the probability that a batch of 20 transistors has 2 defectives. b. find the probability that a batch of 20 transistors
  67. AP Physics

    A hot air balloon containing an AP Physics student ascends vertically at a constant speed of 8 m/s. While ascending, he accidentally drops his rubber duckie from the gondola of the ballong. Seven seconds after it is dropped the duckie bounces off a roof at
  68. Physics

    A hot air balloon containing an AP Physics student ascends vertically at a constant speed of 8 m/s. While ascending, he accidentally drops his rubber duckie from the gondola of the ballong. Seven seconds after it is dropped the duckie bounces off a roof at
  69. Probability

    1)A coin is tossed 5 times. Find P(at most 4 tails.) A)3/16 B)13/16 C)1/32 D)31/32 I chose D 2)How many different arrangements of the letters of the word doodle are possible? A)180 B)720 C)15 D)90 I chose B For #3-5, use the following tepereatures from
  70. physics

    A ball starts at the top of a ramp with an incline of 7 degrees and rolls down, picking up speed. (see the table below) Time (s) Position (m) 0 0 .4917 .1 .7625 .15 .975 .3 1.1583 .45 1.2833 1.6467 (a) Linearize the data and find the slope of the new line.
  71. Math

    Hey guys I need some help with this question PLZ: A telecommunications company offers a rental deal which costs $30 per month plus 50c per call. a) Find the total cost (T1) for making x calls in a given month b)Find the total cost for making 52 calls in a
  72. math-mechanics 1

    i solved a)u=2i and b)r=2t+1/2[-0.4(i) 0,2(j)] at c) i don t have idea how to solve At time t = 0, a small boat is at a buoy travelling due east with speed 2 ms−1 . The boat experiences a constant acceleration of (– 0.4i + 0.1j) ms−2 . The unit
  73. 11th grade

    A flight attendant pulls her 70.0 N flight bag a distance of 263 m along a level airport floor at a constant speed. The force she exerts is 41.0 N at an angle of 52.0° above the horizontal. (a) Find the work she does on the flight bag. (b) Find the work
  74. history

    hi, i have tried to find this answer on lots of webpages but couldn't find it. where did the spanish aramada take place?? Sheromeya, You were probably spelling Armada incorrectly. This site gives the history and fate of the Armada. I think you will find it
  75. maths

    (a)(i)use the composite rule to differentiate the function f(x)=(x^2-6x+23)^(3/2). (ii)use the composite rule and your answer to part (a)(i) to show that the function g(x)=(x-2)/(x^2-6x+23)^(3/2) has derivative g'(x)=(5+9x-2x^2)/(x^2-6x+23)^(5/2).
  76. statistics

    In a survey of 5100 TV viewers, 40% said they watch network news programs. Find the margin of error for this survey if we want 95% confidence in our estimate of the percent of TV viewers who watch network news programs. Hint, find the CI using 1-PropZInt,
  77. analytic geometry/graphing problem

    The vertices of a triangle are the points of intersection of the line y=-x-1, x=2 and y = 1/5x + 13/5. Find an equation of the circle passing through all three vertices. I don't understand how to solve this: should I set them all equal to find the
  78. history -history teacher if poss

    for my history homework i need to answer this question Explain why the Peace Settlement was changed in the years 1920-1928. ive looked but can`t find anything its due in tomorrow and i can`t find anything. please can someone help.
  79. Algebra/can you help me

    Write each expression in terms of common logarithms, and then give a calculator approximation (correct to four decimal places). log7^10= 1.183 How do you find the approximation log3^316 = 5.239 How do you find the approximation Thank you
  80. physics

    Have to figure out 1 before 2 and don't know were to start? 1)The tension in the above string is 84.0 N. Calculate the mass of a 3 m long piece of the steel string. 2)Find the wavelength of the third harmonic of the guitar string described in the problem
  81. Math

    a. Do some research and find a city that has experienced population growth. Determine its population on January 1st of a certain year. Write an exponential function to represent the city’s population, y, based on the number of years that pass, x after a
  82. Physics

    Please help me with this!! I am really confused about it... 1. A 75 kg. man steps off the end of a diving board, and hits the water at 7.7 m/s. Ignoring air resistance, what was the mans PE (potential energy) right before he stepped off the diving board?
  83. chemistry titration (check my thought process)

    can someone check my answers here for my lab... so i have 3.234*10-4 moles of ca2+ and mg2+ ions and used 0.02450L of edta so my molarity of both ions is 0.01320 M. and now we had to find calcium, i used 0.01655 L of edta, can i use the same # of moles
  84. Math

    Football Lesson 5.1 1. y= -0.035x^2 + 1.4x + 1, where x is the distance (in yards) and y is the height (in yards) a. Does the graph open up or down? b. Does the graph have a Maximum value or a minimum value? c. graph the quadratic function. (i'll graph it
  85. Algebra II

    A projectile is launched from a platform 10 meters above ground with an initial upward velocity of 20 meters per second. Find the time when the projectile has returned to the initial height launch, find the time the projectile hits the ground, find the
  86. physics

    A block weighing 11.05 N rests on a 28 degree incline. (a) Find the normal force exerted by the plane on the block out of the plane (b) Find the frictional force exerted by the plane on the block up the slope. c) Find the magnitude of the total force
  87. algebra/math

    I have this figure of a square QRST with an equilateral triangle PQT sitting on top of the square. The figure looks like a little house... My question is if PQ equals 6 cm, then what is the area of the square? Do I need to find the area of the triangle to
  88. Social Studies

    This is for a Latin class, but as it has nothing to do with the language, it is more of a social studies question. For homework we had to complete a project on the Roman Empire. One part was to find all of the provinces, label them on a map, find the year
  89. Pure Mathematics

    1. Given that the straight line y=c-3x does not intersect the curve xy=3, find the range of values for c. 2. Find the range of values for c for which the line y=cx+6 does not meet the curve 2x^2-xy=3. 3. Find the range of values for k for which 8y=x+2k is
  90. English

    Can you help me check this letter, please? 1) teach German in a high school with an emphasis on applied sciences. Our students are between 13 and 18 years old and are all motivated to learn. 2) They will therefore go to university at the end of 3) The
  91. maths

    Andy is not a very good navigator. When he enters a small town, the probability that he gets lost and cannot find the correct road to continue his journey, is 0.2. When he enters a large town, the probability that he does not find the correct exit road is
  92. math

    1. Find the median of the following set of numbers. = B 45, 21, 54, 22, 65, 61 A) 54 B)49 1/2 C) 45 D)48 1/2 2. The following scores were recorded on a 100-point examination: 95, 75, 76, 86, 96, 71, 68, 81, 95, 76, 69, 82, 93, 88, 94 Find the mean and
  93. chemistry!!!Need helpp!!!

    how do you find percent yield of a rxn, and how do you find mmol of something? percent yield = 100 * (actual yield/predicted yield) find the number of moles, and then conver it to milimeter. millimols = mols x 1000 OR mols = grams/molar mass OR millimols =
  94. physics

    A block weighing 11.05 N rests on a 28 degree incline. (a) Find the normal force exerted by the plane on the block out of the plane (b) Find the frictional force exerted by the plane on the block up the slope. c) Find the magnitude of the total force
  95. Calculus

    1. Find the volume formed by rotating the region enclosed by x=5y and x=y^3 with y¡Ý0 about the y-axis. 2. Find the volume of the solid obtained by rotating the region bounded by the given curves about the specified axis y=18x-6x^2 , y=0 : about the
  96. Strategies for the Independent Learner

    When you approach a text, you should A. survey it, using the technique called SQ3R. B. dive right in at the first page and read the assigned section. C. skip over words you don’t know. D. read only the boldface type. 2. The proctored exams for your
  97. English

    I'm posting you the sentences again. Thank you for your corrections. 1) I teach German in a high school with an emphasis on applied sciences. Our students are between 13 and 18 years old and are all motivated to learn. 2) They will therefore go to
  98. Probabilty/Statistics

    1)A coin is tossed 5 times. Find P(at most 4 tails.) A)3/16 B)13/16 C)1/32 D)31/32 I chose D 2)How many different arrangements of the letters of the word doodle are possible? A)180 B)720 C)15 D)90 I chose B For #3-5, use the following tepereatures from
  99. math:^]

    Part A Given that P=(5,4), Q=(7,3), R=(8,6), and S=(4,1), find the component form of the vector PQ+3RS. a. <-10,-16>**** b. <-6,4> c. <-2,-6> d. <14,14> Part B Use the information from Part A to find the magnitude of the vector
  100. Algebra

    graph the equation x-3=y (where do I plot the points?) find the intercepts and then graph: 5x+4y=20 find the intercepts and then graph: 1.4x-1.3y=3.64 graph the equation using slope and y-intercept: y=10/7x +4 graph using slope and y-intercept: x+2y=8