1. math

    In a clinical trial, a drug used to relieve pain caused side effects in 9% of the patients who took it. For a new trial, three patients were selected at random. Find the probability that none of those patients had side effects.
  2. Maths

    A mining company ha 10 000 m of fencing available.It wants to use a fencing to enclose a rectangular field. one side of the field is bordered by a river.If no fencing is placed on the side next to the river, What is the largest area that can be enclosed?
  3. maths

    A mining company ha 10 000 m of fencing available.It wants to use a fencing to enclose a rectangular field. one side of the field is bordered by a river.If no fencing is placed on the side next to the river, What is the largest area that can be enclosed?
  4. isds

    When specifying linear constraints, the modeler must take into account the unit specification of the decision variables so that the units represented by the left side of the constraints are consistent with the units represented by the right side of the
  5. physics

    A 14.5 metal wire is cut into three equal pieces that are then connected side by side to form a new wire the length of which is equal to one-third the original length. What is the resistance of this new wire? Answer in units of .
  6. Calculus

    The side of a square box is increasing at a rate of 4mm/s and its height is increasing at a rate of 2mm/s. How fast is the volume increasing when the side is 40mm and the height is 100mm. Can someone just tell me what formula to use?
  7. Math

    In a clinical trial, a drug used to relieve pain caused side effects in 7% of the patients who took it. For a new trial, two patients were selected at random. Find the probability that neither of the patients had side effects
  8. physics

    A 14.5 metal wire is cut into three equal pieces that are then connected side by side to form a new wire the length of which is equal to one-third the original length. What is the resistance of this new wire? Answer in units of .
  9. 8 th grade math

    each side of square is 6 in. long . a scale factor of 2/3 is used to draw a similar square. how long is each side of similar square . choices are 4in. ,6 in., 8in. ,answer not here i chose 8 in. is that right
  10. physics

    Julie throws a ball to her friend Sarah. The ball leaves Julie's hand a distance 1.5 meters above the ground with an initial speed of 12 m/s at an angle 35 degrees; with respect to the horizontal. Sarah catches the ball 1.5 meters above the ground. 1)What
  11. physics

    what are the horizontal components and vertical components of a cat's displacement when its climbing 5m directly up a tree. I don't know how to find the x and the hypotnuse of a right triangle when theres is no angle theta given. please help me.
  12. math

    The measure of an interior angle of a regular polygon is 135 degrees. Find the number of sides in the polygon. This is what I tried: 180(x-2)=135 [Interior Angle Sum Theorem] x-2=.75 x=2.75 That can't be right though. Help? Not sure about your formula.
  13. Math

    Im really struggling with these proving identities problems can somebody please show me how to do these? I'm only aloud to manipulate one side of the equation and it has to equal the other side of the equation at the end Problem 1. tanx-cotx =
  14. physics

    1) Two people sit on a park bench 6.0 ft long, weighing 160 lb. A boy weighing 75lb sits directly over the legs on the left side. A man weighing 170 lb sits 2.0 ft to the right of the boy. How much weight is supported by each leg on the right side
  15. math

    A Jewlery box has length of 3 and a half, a width if 1 and a half, and a height of 2 units. What is the volume if the box I cubic units? Each of the cubes in this activity has a side length of 1/2. How many cubes with side length 1/2 does it take to form a
  16. pre calc

    The terminal side of an angle in standard position goes through the poin (-2,5). Find the values of the 6 trig function sin cos tan csc sec cot
  17. math

    how many side and angles does a trapezoid angle, hexagon, and pentagon have? solve each equation: 13 + y = -3, 3y + 8=3, y over 3= -9 need help with + & - rules for adding whole numbers, decimals, fractions and integers ( do not understand) and rule for
  18. PHYSICS

    A 6.53-kg block initially at rest is pulled to the right along a horizontal surface by a constant force of 125 N applied at an angle θ above the horizontal. The coefficient of kinetic friction between the block and the horizontal surface is 0.150. At what
  19. Physics URGENT

    5uC charges are at the base vertices of an equilateral triangle 0.4m on a side. What is the electric field at the third vertice? im not completely sure how to start that.. don't i need the force to calculate the x&y components? NO. Figure E directly from a
  20. physics 20

    DYNAMICS: a skier starts at the top of a 30m hill ta an anle of 20 degrees. the skier goes straight down the firctionless slope. How long will it take the skier to get to the bottom?
  21. physics

    A car is coasting backwards down a hill at -5.0 m/s when the driver gets the engine started. After 4 seconds, the car is moving uphill at a velocity of +3 m/s. What is the car’s average acceleration?
  22. physics 20

    DYNAMICS: a skier starts at the top of a 30m hill ta an anle of 20 degrees. the skier goes straight down the firctionless slope. How long will it take the skier to get to the bottom?
  23. MGT repost with rt. questions

    HELP ASAP>>>> here it is: Incident 14–1 No Extra Effort You are the supervisor of nurses in the pediatrics section of a 700-bed hospital in a metropolitan area. You have been in your job for six months, having moved from a similar position in
  24. Diffraction

    Question Details: A row of seats is parallel to a stage at a distance of 8.70 m from it. At the center and front of the stage is a diffraction horn loudspeaker that has a width of 7.50 cm. The speaker is playing a tone at a frequency of 9300 Hz . The speed
  25. Math

    In a triangle ABC, AC = 36, BC = 48, and the medians BD and AE to sides AC and BC, respectively, are perpendicular. Find AB I tryed to find the sides using Pythagorean theorem but it's not working
  26. physical science

    assume that a parcel of air is forced to rise up and over a 6000 foot high mountain. The intial temperature of the parcel at sea level is 76.5 F, and the lifting condensation level (lvl) of the parcel is 3000 feet. The DAR is 5.5 F/1000 and the SAR is 3.3
  27. World history; Check:P

    What methods did the Assyrians use when they attacked enemy cities? The satrapies were linked by a 2,500-kilometer highway, the most impressive stretch being the Royal Road, built by command of Darius I. Royal inspectors, the "eyes and ears of the king",
  28. PHYSICS

    CAN SOMEONE PLEASE CHECK THE LAST PART OF THIS QUESTION? pete and john play a game of tug war on a frictionless icy curface. pete weighs 539 N and john weights 392 N. during the course of the game, john accelerates toward pete at a rate of 3 m/s^2. Sarah
  29. Physics

    A car of mass 1396 kg is parked on a very slippery hillside (see figure below). To keep it from sliding down the hill (è = 15°), the owner attaches a cable. If there is no frictional force between the road and the tires, what is the tension in the cable?
  30. Physics

    a 60 kg boy on a sled reaches the bottom of a hill traveling at 8 m/s, if he comes to a stop at 20 m along this flat stretch of snow what is the coefficient of kinetic friction between the sled and the ground? (hint: find the acceleration first)
  31. math

    In triangle ABC,angle B=2times angle A. The bisectors of these angles meet at D,while BD extended meet AC at E. If angle CEB=70 degrees, find angle BAC.
  32. Math.

    Write a list of steps that are needed to find the measure of angle B, if angle A is 72 and angle C is 113 ( the figure is a triangle with a long line under) What is the measure of Angle B? Thank you.
  33. Math

    In a right triangle JKL, angle KJL measures 60 degrees. When drawn, the angle bisectors of angle JKL and LJK intersect at point M. What is the obtuse angle JMK
  34. Physics

    In the javelin throw at a track and field event, the javelin is launched at a speed of 25 m/s at an angle of 30.7° above the horizontal. As the javelin travels upward, its velocity points above the horizontal at an angle that decreases as time passes. How
  35. physics

    In the javelin throw at a track and field event, the javelin is launched at a speed of 29 m/s at an angle of 35° above the horizontal. As the javelin travels upward, its velocity points above the horizontal at an angle that decreases as time passes. How
  36. AP Physics 1

    In the javelin throw at a track-and-field event, the javelin is launched at a speed of 33 m/s at an angle of 32° above the horizontal. As the javelin travels upward, its velocity points above the horizontal at an angle that decreases as time passes. How
  37. physics

    In the javelin throw at a track-and-field event, the javelin is launched at a speed of 35.0 m/s at an angle of 33.7 ° above the horizontal. As the javelin travels upward, its velocity points above the horizontal at an angle that decreases as time passes.
  38. 7th grade math: Pythagorean Thereom

    If the sum of the sides of a right triangle is 49 inches and the hypotenus is 41 inches, then what would be the other two sides?
  39. Chemistry

    Given the following balanced equation: 2Na + Cl2 ---> 2NaCl A.List each element on the reactant side and each element on the product side and assign the correct oxidation number to each. B.Identify which element is oxidized in the reaction and which is
  40. physics

    you are standing on one side of the river. Figure out the width of the river. All calculations have to be made on the side you are standing on. You cant step into the river or cross it. You may use the 2 laws ( sine and cos ). no guessing allowed. has to
  41. English

    Can you please check these sentences? I'm unsure about the use of synonyms. Thank you. 1)Dr Jekyll creates a potion capable to release (or of realising) his evil side. 2) For this purpose, he uses a particular salt, adds it to other componenents and brings
  42. trig

    Given that θ is an angle in standard position whose terminal side contains the given point, provide the exact value of the indicated function. (-2, -3) Find sec θ.
  43. math

    A diagonal is drawn in a 12-in. square floor tile. Find the sine, cosine, and tangent of the angle formed by the diagonal and a side.
  44. trig

    If theta is an angle in standard position, state in what quadrants its terminal side can lie if theta is equal to -415 degrees?
  45. Pre Calc

    Find the vaule of sec(theta) for angle theta in standard position if the point at (3,-1) lies on its terminal side.
  46. physics

    A 2.1 kg ball tied to a string fixed to the ceiling is pulled to one side by a force to an angle of è = 26.6 how large is F? tension of string? before it was released
  47. math

    a company packages snack mix in cylindrical tubes.each tube is made from rectangle of cardboard.the bases of the cylinder are plastic.the cardboard comes in.8.5 inches by 11 inches sheets.to hold the greatest amount of mix should the longger side or the
  48. Math

    Triangle RST, RS = 30 centimeters, measure of angle T = 105, and measure of angle R = 40. Find the area of triangle RST, to the nearest square centimeter.
  49. math

    The center pole of a tent is 8 feet long. the side of the tent is 12 feet long. If a right angle is formed where the center pole meets the ground, what is the measure of angle a.(there is a pic, the 8ft line is the center pole going down, this forms the
  50. chem again

    One more question- how do I balance this half-reaction in terms of atoms? MnO4^-(aq) -> MnO2 (s) i can't balance the oxygen I have no idea! Here is how to do it. It isn't the easiest method (there are easier ones) but this covers areas that you need to
  51. math

    triangle ABC is isoceles with segment AB congruent tp segment AC. Angle A is 50. The bisectors of angle B and angle C meet at D. Find the measure of angle BDC
  52. math

    A graphics designer wants to use a star-shaped polygon with 10 points and a point angle of 12 degrees. What should be the dent angle of this polygon?
  53. GEOMETRY CIRCLES PLEASE

    1.An isosceles triangle with each leg measuring 13 cm is inscribed in a circle . if the altitude to the base is 12 cm find the radius of the circle 2. Circles a and b are tangent at point c. p is on circle a and q is on circle b such that pq is tangent to
  54. functions

    Given a 10 cm by 20 cm piece of paper, if you cut out four equal squares from the corners and fold up the resulting sides you will create an open box. Write an expression for the volume of this box in terms of the side length of each cut‐out square,
  55. Algebra

    Given a 10 cm by 20 cm piece of paper, if you cut out four equal squares from the corners and fold up the resulting sides you will create an open box. Write an expression for the volume of this box in terms of the side length of each cut‐out square,
  56. English

    I urgently need you to check these sentences on a trip description. I hope you can help me. Thank you. (I icluded some corrections in parentheses) 1) Our plane took off from Milan and stopped a day in Hong Kong. 2) We had the possibility to visit quickly
  57. Physics

    You push along a handle down toward a sled to move it across the snow. The handle is at an angle with the horizontal. As you increase the angle the handle makes with the horizontal,(steeper angle), what happens to the normal force the ground exerts on the
  58. 7th grade

    one side of a rectangle is 15 centimeters longer than the other side. the perimeter of the rectangle is 94 centimeters. what is the width of the rectangle?
  59. math

    Renee must solve the equation 4x+12=6x. If she subtracts 4x from the left side of the equation, what should renee write on the right side of the equation?
  60. English

    1. I believe her to be very careful. (Can we omit 'to be' in this sentence?) 2. It's already summer. Leaves are dark green. 2-1. It's already summer. Leaves have dark green. (Which one is correct?) 3. He kept her delicious cake. 3-1. The game kept me
  61. math

    In a right triangle ABC, C = 90°, b = 380.1 inches and c = 589.1 inches. Solve for all the missing parts using the given information. (Round each answer to one decimal place for side and to two decimal places for angles.) A = ° B = ° a = __inches IM
  62. Trig-Medians and law of cosines and sines

    In triangle ABC, we have AB=3 and AC=4. Side BC and the median from A to BC have the same length. What is BC? Not making sense to me, I think the answer must be simple, but I don't know how to solve I applied the law of sines but to no avail. Help is
  63. Writeacher

    I don't really know what you mean. i looked over my paragraph many many times, and i picked out some errors this time and here it is. i really need help. please. please. please. Rah! Rah! Bah! Bah humbug! How excited I was, it was time for me and my class
  64. Kids health questions

    Is spina bifida caused by a spinal cord injury or birth trauma? Are hemiplegic children impaired on one side or on both sides? Spina bifida: http://en.wikipedia.org/wiki/Spina_bifida hemiplegic: http://en.wikipedia.org/wiki/Hemiplegic More than just
  65. REALLY HARD CALCULUS PROBLEMMMM PLEASE HELP ME???

    A circular swimming pool has a diameter of 16 m, the sides are 3 m high, and the depth of the water is 2.5 m. How much work (in Joules) is required to pump all of the water over the side? (The acceleration due to gravity is 9.8 m/s 2 and the density of
  66. history

    The Progressive Movement has been characterized as a movement that brought a sense of justice and morality to the American political scene between 1890 and 1917. Other historians say that although well-intentioned, in the end they failed to achieve their
  67. English

    Write the complete subject and underline the simple subject., 1/ The gourds' noise sounds like dry leaves in the wind. Answer:cmplete subject : the gourds'noise sounds Simple subject: sounds 2/ Martin's friend come some times and plays her recorder.
  68. math algebra

    The lengths of the three sides of a right triangle are given by three consecutive even integers. Find the lengths of the tree sides.
  69. Col. Algebra

    I'm needing help with understanding /solving this problem. Can you please help? In triangle ABC, the angle C is six times as large as angle A. The measure of angle B is 20 degree greater that that of angle A. Find the measure of the angles.
  70. geometry

    How many different triangles can be constructed with toothpicks by conncting the toothpicks only at their ends if each triangle can contain at most five toothpicks per side? I know the answer is 22 but I have no idea how they came up with this answer. Any
  71. algebra

    1) The maintenance crew is doing some work on the arch. The work will be done on the right side of the arch. In order to bring the equipment up the maintenance crew has constructed a temporary ramp from the ground on left side of the arch to the level
  72. algebra

    1)the gateway arch, which can be closely approximated by a parabola, is 630 feet high and 630 feet across at the base. The Gateway arch is the tallest man-made monument found in the United States in St. Louis Missouri. The maintenance crew is doing some
  73. physics

    You pick up a 3.2 kg can of paint from the ground and lift it to a height of 1.4 m . Part A How much work do you do on the can of paint? Express your answer to two significant figures and include the appropriate units. Part B You hold the can stationary
  74. Physics

    I don't understand snell's law ( nsin(0)=nsin(0) ) and how to use it with refraction. also how do i apply that to this problem: 'a light ray enters a square piece of plastci (n=1.39) near a corner. as it encounters the adjacent side it gets refracted along
  75. AP Calculus

    The management of a large store has 1600 feet of fencing to fence in a rectangular storage yard using the building as one side of the yard. If the fencing is used for the remaining 3 sides, find the area of the largest yard possible.
  76. Trigonometry/Geometry - Law of sines and cosines

    In most geometry courses, we learn that there's no such thing as "SSA Congruence". That is, if we have triangles ABC and DEF such that AB = DE, BC = EF, and angle A = angle D, then we cannot deduce that ABC and DEF are congruent. However, there are a few
  77. Trigonometry

    ABC is a non-degenerate triangle such that 2\sin \angle B \cdot \cos \angle C + \sin \angle C = \sin \angle A + \sin \angle B, what is the value of \lfloor 100 \frac {AC}{AB} \rfloor ?
  78. Precalculus

    I've tried many times to get the equation to balance using trig identities like half-angle formulas, power-reducing formulas, and double angle formulas, but I couldn't get the equation to equal out. I only need to work one side to make it equal to the
  79. math URGENT!!!!

    the midpoints of the sides of a triangle are (1,1),(4,3),and (3,5). find the area of the triangle. please answer and show how u did it step by step please!!!! how do i find area of the smaller triangle?
  80. physics

    Four forces act on a hot-air balloon with F1 = 1660 N and F2 = 5040 N , shown from the side in Figure 4-29. Find the magnitude and direction of the resultant force on the balloon. N ° (counterclockwise from the horizontal)
  81. physics

    Four forces act on a hot-air balloon with F1 = 1660 N and F2 = 5040 N , shown from the side in Figure 4-29. Find the magnitude and direction of the resultant force on the balloon. N ° (counterclockwise from the horizontal)
  82. AP physics

    Four forces act on a hot-air balloon with F1 = 1660 N and F2 = 5080 N , shown from the side in Figure 4-29. Find the magnitude and direction of the resultant force on the balloon. a)N b)° (counterclockwise from the horizontal)
  83. Trigonometry

    the leaning tower of pisa is 179 ft tall. it leans at an angle of 5.5 degrees. if the angle of elevation of the sun is 60 degrees and the sun is opposite the side on which the tower leans, how long is the shadow that the tower will cast?
  84. Geometry rhombus variable question

    In the rhombus, m<1=18x m<2=x+y m<3=30z Find the value of the variables X,Y, and Z. {angle 1 is on bottom right, angle 2 is on bottom left, on the upper half is angle three on the left. the figure is shaped like a wide diamond} Thank You ^0^ It
  85. Math

    What is the measure of the dent angle for a star-shaped polygon with 20 points and a dent angle of 12 degrees?
  86. calculus

    1) A ladder 25 feet long is leaning against the wall of a house. The base of the ladder is pulled away from the wall at a rate of 2 feet per second. Find the rate at which the are of the triangle is changing when the base of the ladder is 7 feet from the
  87. Math

    Which of the following values best approximates of the length of c in triangle ABC where c = 90(degrees), b = 12, and B = 15(degrees)? c = 3.1058 c = 12.4233 c = 44.7846 c = 46.3644 In triangle ABC, find b, to the nearest degree, given a = 7, b = 10, and C
  88. Calculus

    A ladder a = 20 feet long is leaning against the wall of a house. The base of the ladder is pulled away from the wall at a rate of b = 4 feet/second. Consider the triangle formed by the side of the house, the ladder, and the ground. Find the rate at which
  89. Physics

    A typical brick has dimensions of 20.0 cm by 10.0 cm by 5.0 cm and weighs 20.0 N. How does the pressure exerted by a typical brick when it is resting on its smallest side compare to the pressure exerted when it is resting on its largest side PLEASE HELP !!
  90. algebra

    A triangular-shaped wall has a base of 2x=4 and a height of x+3. The area of the triangle is 56 squared inches. What is the value of x?
  91. physics

    Three charges sit on the vertices of an equilateral triangle, the side of which are 30.0 cm long. If the charges are A = +4.0 C, B = +5.0 C, and C = +6.0 C (clockwise from the top vertex), find the force on each charge.
  92. math

    Eight friends share three pizzas. How much pizza will each friend get? Explain your thinking words, numbers and models.
  93. Physics

    Your friend doesn't believe you when you tell her that the acceleration due to gravity on earth is the same for both light and heavy objects. How could you convince her?
  94. math

    Kyra drove to visit her friend. She traveled 144 miles in 2 5/8 hours. What was her average speed?
  95. HTT

    what would be the monthly debt service payment on a loan if a friend lends me $15,000 for 4yrs. @8% interest?
  96. math

    Betty buys 16 balloond for her friend. At the rate given in the sign below how much does she pay in $ and cents A dozen ballons for $4.80
  97. english

    is it ethical to tell an associates and a close friend that she should pay more attention to her work responsibilities, or management will fire her
  98. math

    Betty buys 16 balloond for her friend. At the rate given in the sign below how much does she pay in $ and cents A dozen ballons for $4.80
  99. Math, Grade 6

    My best friend needs help multiplying and dividing mixed numbers. I try to help them but it's hard cause shes stubborn. Any help I could give her?
  100. english

    a friend has a new baby and has invited you to her house . write a letter accepting the invitation . ask for two questions that you need before the vist .