1. Physics

    A girl coasts down a hill on a sled, reaching a level surface at the bottom with a speed of 6.7 m/s. The coefficient of kinetic friction between runners and snow is 0.038, and the girl and sled together weigh 603 N. The acceleration of gravity is 9.8 m/s2 . How far does the ...
  2. algebra

    1. A rectangular wooden frame has side lengths 5x and 7x + 1. The rectangular opening for a picture has side lengths 3x and 5x. -What is the area of the wooden part of the frame? Write your answer in factored form. -How can drawing a diagram help you solve the problem? -How ...
  3. physics

    i need to build a roller coaster, we can't use tubing to carry the ball so any ideas on what to use for the track? i was thinking no. 6 copper wire? i need to have 2 hills and a loop. how does this sound? 28" drop into a teardrop loop 12" high and back up hill #2 which will be...
  4. Physics

    A uniform door (0.81 m wide and 2.1 m high) weighs 122 N and is hung on two hinges that fasten the long left side of the door to a vertical wall. The hinges are 1.5 m apart. Assume that the lower hinge bears all the weight of the door. (a) Find the magnitude and direction of ...
  5. trigo

    A ship sails N 27°10' E for 39 km and then turns N 67°50' for 85 km. What isad the distance and the bearing of the ship from the starting point? >>>So, I have a sketch of one triangle(not a right triangle, then drew 3 right triangles all over it then solved for ...
  6. Math

    One of your friends is heading north for the Christmas holiday and the other friend is heading south.If their destines are 1029 miles apart and one car is traveling at 45 miles per hour and the other car is traveling at 53 miles per hour.How many hours before the two cars pass...
  7. math

    One of your friends is heading north for the Christmas holiday and the other friend is heading south. If their destinies are 1029 miles apart and one car is traveling at 45 miles per hour and the other car is traveling at 53 miles per hour. How many hours before the two cars ...
  8. Math

    Mary cut pizza into 16 slices. If she gave 3/8 of the pizza to her friend, how many slices of pizza did she give away
  9. Pre Algebra

    Please help me with some problems. Thank you! Solve the equation by square root property. 3. 2x^2 = 26 I don't understand how to solve this problem. Solve the equation using the quadratic formula. 7. 7x^2=-8x -2 This is what I got x= -8 -or+ square root -8/14 8. 16x^2+1=5x ...
  10. Spanish 7th grade-please check

    How doyou ask if a friend if they are hungry? Tienes hambre? If they are thirsty Tienes sed? Both should have upside down question marks before question
  11. physics

    A golf ball threw by a friend from a window of her apartment collides with a rock that you throw at the same moment at x=44.07m and y=13.63 m, and t=2.56 s. If the ball was dropped from a height of h=45.78 m, determine the initial velocity of the rock(write de x- and y- ...
  12. MATHEMATICS

    3 friend's A,B,C went for weekend party to mc Donalad's restruant and there they measure their weights in some oder in 7 rounds. A,B,C,AB,BC,AC,ABC. Final round measure is 155 kg then find the average weight of all the 7 rounds.
  13. Applied Calculus

    A rectangular box is to have a square base and a volume of 50 ft3. The material for the base costs 32¢/ft2, the material for the sides costs 10¢/ft2, and the material for the top costs 26¢/ft2. Letting x denote the length of one side of the base, find a function in the ...
  14. maths-parallelogram

    There is a man who plotted a land in shape of a trapezium with its parallel sides to be 15m and 5m & height=9m. The Panchayat decided to take a triangular plot of land from one side to construct a school. He reluctantly agrees to this. is this can be possible? Which are the ...
  15. math

    -4(2x-3)=-8x+5 Hi Cheryl! The first thing you have to do with this is multiply the -4 into the stuff in the parenthesis. -4*2x = -8x -4*-3 = +12 So the left side is -8x+12 = -8x +5 Now that I'm this far along, we see that there's no real answer to this. If we add -8x to both ...
  16. MATH-help

    I have math questions to do, but since my class and I share the math text books with this other class, we are not allowed to bring them home. So I decided to go onto the site : h t t p : // highered . mcgraw-hill . com /sites/0070002479/information_center_view0/sample_material...
  17. Physics

    Three charges are arranged in an equilateral triangle with sides of 4 cm. The coordinates and corresponding charge values are as follows: +4q at (-2,0); +2q at (2,0); -q at (0,3.464). The elementary charge of an electron is given by q = -1.602 x 10^-19 C. Determine the torque ...
  18. math (answer check)

    The coordinates of two vertices of triangle DEF are D(-5,5) and E(9,8). Determine two possible coordinates for for F that would make DEF a right triangle ? ans: slope DE = 8-5 / 9 - (-3) = 3/12 I don't know this part :how to Determine two possible coordinates for for F that ...
  19. Algebra

    What is the value of b in the triangle shown below? The triangle they are showing is a right triangle...the length is 3b and the width is b...on the inside of the triangle it says 24in^2. A.–4 in B.4 in C.±4 in D.no solution Please help I do not know how to do these...if I ...
  20. Chemistry 30

    Complete the following reactions by moving only one proton at a time. Identify the acid (A) and the base (B) on the left-hand side of the equation, and the conjugate acid (CA) and the conjugate base (CB) on the right-hand side of the equation, according to Bronsted-Lowry ...
  21. Science

    iron cube of side 10 cm is kept on a horizontal table . If the density of iron cube is 8000 kg /m cube , find the pressure on the portion of the table where the cube is kept?
  22. Maths

    The sides of a triangle are xcm and 5cm. The perimeter is 29cm, evaluate the value of x?
  23. geometry

    Which of the following are measurements of the sides of a right triangle? ________________________________________ A. 10, 8, 6 B. 13, 12, 5 C. 26, 24, 10 D. all of the above
  24. GEOMETRY

    Which of the following are measurements of the sides of a right triangle? ________________________________________ A. 3, 4, 5 B. 28, 26, 12 C. 17, 14, 6 D. all of the above
  25. Calculus 1

    find the area of the largest posible isosceles triangle with 2 sides equal to 6. thanks
  26. geometry

    if a triangle has a perimeter of 72 and a ratio of 3:4:5. what is the length of all three sides and angles
  27. Trigonometry

    Okay, Assume the triangle has the given measurements. Solve for the remaining sides and angles. A = pi/6; a = 17.4; b = 19.6
  28. Math

    The perimeter of a triangle is 50. What steps do I need to take to find the length of the sides?
  29. Math

    the base of an isosceles triangle is 26 cm. if the perimeter is 72 cm. find the lenght of each of the eqaul sides
  30. Math

    find the equations of the three perpendicular bisectors of the sides of triangle qrs.
  31. Geometry

    In (triangle)EFG, if m<E = 6x - 8, m<F = 7x + 3, and m<G = 3x - 7. State the sides correctly ordered from longest to shortest.
  32. MATH

    If the lengths of the sides of a triangle are in the ratio 8:4:5 and its perimeter is 48cm find its area
  33. geometry

    The base of an isoceles triangle is 26 cm .If the perimeter is 72 cm. Find the lengt of each of the equal sides
  34. Math

    The opposite sides of a square, a rectangle, a parallelogram, and a rhombus are what type of triangle?
  35. math

    Determine whether the given measure can be the lengths of the sides of a triangle. Write yes or no. 1. 8, 9, 17 2. 23, 26, 50 3. 12.3, 13.9, 25.2
  36. math

    A courtyard is shaped like a square with 250-ft-long sides. What is the distance from one corner of the courtyard to the opposite corner? Round to the nearest tenth. 353.6 ft 500 ft 433.0 ft 176.8 ft can someone show me how to do this?
  37. Maths

    Jessica needs to construct a rectangular outdoor dog pen. The pen must have 4 sides. I need to draw 6 different shaped rectangular pens, seen from the top, using 24m of fencing.
  38. English

    Can you please check these sentences? I'm still doubtful about the use of prepositions. Thank you very much. 1) I was last ashamed of myself when I lost all the matches in a tennis tournment (The last time I've been ashamed of myself is wrong?) 2) I've never blamed a friend ...
  39. How to calculate marks to pass with the exam

    My friend has currently 62.4% and the final exam is worth 30%. She's wondering how much she should get on the exam to at least pass or boost it up. Please show the math :o
  40. physics

    two identical point charges are fixed to diagonally opposite corners of a square that is .5m on a side. Ecah charge is +3.0x10^-6 C. How much work is done by the elctric force as one of the charges moves to an empty corner
  41. shortest fence

    this is my last question from applications of derivatives! A 216m^2 rectangular pea patch is to be enclosed by a fence and divided into two equal parts by another fence parallel to one of the sides. What dimensions for the outer rectangle will require the smallest total length...
  42. English

    1. Lisa thinks people will be happy in the future. They will have more food and longer holidays. They can also travel to the space. However, Tommy thinks people will be sad in the future. They will suffer from hunger, air pollution and water pollution. 2. Lisa looks on the ...
  43. physics

    A stone has a mass of 6.01 g and is wedged into the tread of an automobile tire, as the drawing shows. The coefficient of static friction between the stone and each side of the tread channel is 0.948. When the tire surface is rotating at 14.7 m/s, the stone flies out of the ...
  44. physics

    A stone has a mass of 3.40 g and is wedged into the tread of an automobile tire, as the drawing shows. The coefficient of static friction between the stone and each side of the tread channel is 0.916. When the tire surface is rotating at 18.8 m/s, the stone flies out of the ...
  45. Physics

    A stone has a mass of 6.00 10-3 kg and is wedged into the tread of an automobile tire, as the drawing shows. The coefficient of static friction between the stone and each side of the tread channel is 0.73. When the tire surface is rotating at a maximum speed of 17 m/s, the ...
  46. word problem

    what are the dimensions of the lightest rectangular box without an open top whose base is a square and whose height is two less than the length of the side of the base?
  47. physics

    Six identical particles each of mass ‘m’ are arranged at the corners of a regular hexagon of side length ‘L’. If the masses of any two adjacent particles are doubled. The shift in the centre of mass is???
  48. Math-Algebra 1

    I Really Need Help With This Question!! What is the area of the label on the side of a soup can if the radius of the can is 2 inches, the height is 4 inches, & the label completely covers the sides? Answers: a.) 16 & pie symbol square inches b.) 16 square inches c.) 4 7 pie ...
  49. Math-Algebra 1

    I Really Need Help With This Question!! What is the area of the label on the side of a soup can if the radius of the can is 2 inches, the height is 4 inches, & the label completely covers the sides? Answers: a.) 16 & pie symbol square inches b.) 16 square inches c.) 4 7 pie ...
  50. Calculus

    A manufacturer constructs open boxes from sheets of cardboard that are 6 inches square by cutting small squares from the corners and folding up the sides. The Research and Development Department asks you to determine the size of the square that produces a box of greatest ...
  51. English- Juluis Caesar

    I'm suppose to write approximately 100 words or half a page for each of these questions & I need a little bit of help! :S Question 1: After reading Act 1, Do you believe that Caesar might, indeed, be a threat to Roman Liberty? Question 2: After reading Act 2, Compare and ...
  52. geometry

    Write a two column proof of the Corollary Triangle Sum Theorem. The acute angles of a right triangle are complementary. m<A + m<B=90degrees
  53. Geometery

    I am ask to write a two column proof. Given that AD is the diameter of circle O, and DC is tangent to O at D. Prove that Triangle ABD ~ (congruent) to triangle ADC
  54. Math

    12. Your neighbor pays $40 to have her lawn mowed and always adds a 15% tip. You and your friend decide to mow the lawn together and split the earning evenly. How much will each of you make? 15*40=500 500+40=540 540/2=270 You and your friend will each make $270. 13. Hannah has...
  55. geometry

    You have looked at it two times before. There are 30 questions worth 30 points. Part 1 Multiple Choice: Select the best answer from the choices provided. (Each question is worth one point) 1. Determine how many wheels are turning clockwise. 1 2 none 2. Determine how many ...
  56. algebra

    mang pedring wanted to construct a square table such that the length of its side is 30 cm longer than its height. 1. How does the illustration look like? illustrate. 2. How would you represent the height of the table? How about the length of its side? 3. What expression ...
  57. Geomentry

    I need help in how to do centroids of a Triangle The method of finding the centroid is illustrated at http://mathworld.wolfram.com/TriangleCentroid.html Draw straight lines from each vertex to the center of the opposite side. They will intersect at the centroid.
  58. poetry

    The two executioners stalk along over the knolls. Bearing two axes with heavy heads shining and wide. And a long limp two-handled saw toothed for cutting great boles. And so they approach the pound tree that bears the death-mark on its side. Jackets doffed they swing axes and ...
  59. precalculus

    The four sequential sides of a quadrilateral have lengths a=3.6, b=5.3, c=8.4, and d=10.2 (all measured in yards). The angle between the two smallest sides is alpha = 117°. What is the area of this figure?
  60. English

    Think of the present you received from your friend. As for me, I had a penpal when I was a middle school student. She lived in Ohio in the USA. We exchanged letters and I received postcards. On a postcard I was able to see the Mississippi River. The scenery around the ...
  61. Science

    when comparing the force that is required to climb a mountain walking up a trail that slopes gently upward to the top verses getting there by scaling a sheer vertical face, which of the following is true? (a) you use more force for a giving movement on the walk than on the ...
  62. Physics

    The Moon causes tides because the gravitational force it exerts differs between the side of the Earth nearest the Moon and that farthest from the Moon. Find the difference in the accelerations toward the Moon of objects on the nearest and farthest sides of the Earth. (The mass...
  63. math

    A power station is on one side of a river that is 3/4 mile wide, and a factory is 8 miles downstream on the other side of the river. It costs $24 per foot to run power lines over land and $30 per foot to run them under water.(1 mile = 5280 feet) Write the total cost C to run ...
  64. Math, Calculus

    The questions says it has 2 solutions. It wants me to find what x would be if cos(x)=-.49 and it is given that x is on the scale between 0 and 2pi. I know that cosine is the x value, and since cosime is negative in this case the two solutions need to be in the 2nd and 3rd ...
  65. Precalculus

    I have three questions on my homework in which I am stuck on. Thanks for the help! #1 find all solutions of the equation in the interval [0,2pie). In cases where a calculator is necessary, round the answers to two decimal places. sin(sinx)=pie/6 #2 A 100 ft vertical antenna is...
  66. business maths

    Jennifer owes $13,000 to a friend who is charging her interest of 0.90% p.m. She is required to settle the amount owed with two equal payments, one today and the other in three months. Calculate the size of the payments using three months as the focal date. I am totally lost...
  67. Physics, need help only on part one.

    You are using a 5-m-long ladder to paint the exterior of your house. The point of contact between the ladder and the siding of the house is 4 m above the ground. The ladder has a mass of 18.0 kg. You weigh 56.6 kg and stand three-quarters of the way up the ladder. (a) ...
  68. math

    The angle of depression of two points on opposite sides of a building are on the same horizontal level with the foot of the buiding are 58 and 49 respectively from the top of the building. If the building is 38m tall, calculate the distance between the points.
  69. physics

    During liftoff, a hot-air balloon accelerates upward at a rate of 2.5 . The balloonist drops an object over the side of the gondola when the speed is 12 . a)What is the magnitude of the object’s acceleration after it is released (relative to the ground)? Part B What is the ...
  70. Math

    Explain It Adam made 19 paper cranes Monday and 8 more Tuesday. He gave 9 friends an equal number of cranes. How many cranes did each friend received? Explain how you found your answer.
  71. math

    Standing on the top of a building, Eric spots his friend's car at an angle of depression of 35°. The car is 360 feet from the base of the building. How tall is the building to the nearest hundredth of a foot?
  72. algebra

    A book has N consecutive pages torn out. Suppose A is the last numbered page before the torn out section and B is the forst numbered page following the torn out section. Fins the formula for N in terms of A and B * Each paper in the book has 2 sides. Each side is one page
  73. math

    A triangular lot sits at the corner of two streets that intersect at an angle of 63 degrees. One street side of the lot is 35m and the other is 47m. how long is the back of the lot, to the nearest metre?
  74. Engineering/Shop

    I've been asked to help a friend make a longsword. Aiming for a length of 3 to 4 feet, what metal should I use to give it a weight of 50 pounds or less? I've experimented with steel, but that is too heavy to fit dimensions. I was thinking titanium or something, but I don't ...
  75. english help please!!

    Which of the following is a strong post-reading strategy? Paraphrase each line of the entire story by hand. Write an essay without looking at your notes. Discuss difficult concepts with other people. *** Loan the book to a friend to read after you. is it c pls help me
  76. math

    Points $D$, $E$, and $F$ are the midpoints of sides $\overline{BC}$, $\overline{CA}$, and $\overline{AB}$, respectively, of $\triangle ABC$. Points $X$, $Y$, and $Z$ are the midpoints of $\overline{EF}$, $\overline{FD}$, and $\overline{DE}$, respectively. If the area of $\...
  77. math

    Points $D$, $E$, and $F$ are the midpoints of sides $\overline{BC}$, $\overline{CA}$, and $\overline{AB}$, respectively, of $\triangle ABC$. Points $X$, $Y$, and $Z$ are the midpoints of $\overline{EF}$, $\overline{FD}$, and $\overline{DE}$, respectively. If the area of $\...
  78. science pls pls pls help me

    The lake water in a location in Florida had an unusual color and smell. Investigations revealed that the lake? water contained high levels of toxic fertilizers and pesticides which were carried into the lake from gardens and common areas in the location. What are people in the...
  79. physics

    A student is attempting to haul a 500 kg log down a 24 degree hill. The log has a coefficient of friction of .5. The student is pulling with about 1700 N of force. Is the student pulling too hard or too lightly? Calculate exactly how much harder or less hard the student should...
  80. WSU PHY

    The Moon causes tides because the gravitational force it exerts differs between the side of the Earth nearest the Moon and that farthest from the Moon. Find the difference in the accelerations toward the Moon of objects on the nearest and farthest sides of the Earth. (The mass...
  81. English (West Side Story)

    I would like someone to check the following questions for me. Thanks in advance. 1. What issue was a problem for Tony in West Side Story? A. Maria did not return his love B. His job was not a good one C. His parents did not approve of the friends he hung out with D. He could ...
  82. English

    1. He is a my friend. (X) 2. He is a friend of mine.(O) (Does 'mine' refers to 'my friends'?) 3. Look at my that book. (X) 4. Look at that book of mine. (o) (Does 'mine' refer to 'my books'? 5. They are some my books. 6. They are some books of mine. 7. They are some of my ...
  83. stemplot one more question

    No, I don't think you should round the data. The stems should probably be the numbers 13,14,15,...,19 Line them up like this with the leafs to the right S L 13 |9 14 |8,9 15 |2,8 . . . You can finish it. Starting the stems with 1 would accomplish nothing here. You can order ...
  84. Talent Shows

    In class I have to do a talent show. If I learn karate from my friend do YOU think that is okay for a talent show?
  85. Vocabulary.

    The (luster, loom) of her reputation as a friend of humanity has grown brighter with the years. Luster, Loom? Luster?
  86. com 140

    In what ways are purpose, audience, tone, and content different for interpersonal and business communication?Consider your own experience as you answer this question. If you have not worked in a business environment, you may ask a friend, parent, or other adult about his or ...
  87. english

    from the book there are no children here what does " William died a few months later when a friend, fooling around with a revolver he thought was unloaded, shot William in the back of the head. Lafeyette never learned what happened to the snake." this mean? an interpretation
  88. English

    I saw my friend Sherry cheating on a test. I think cheating on a test is not good. Should I let the teacher know about it? (What is the meaning of the last sentence containing 'let'? Would you like to paraphrase it? Can we use 'make' or 'have' instead of 'let'?)
  89. algebra

    Foursquare provides a service that allows your friend to know your whereabouts by checking in . From march 2010 to march 2011 it experienced amazing growth. The function : F(x)=1/18x^2 - 1/12^x + 1/2 Evaluate F(3)? Determine when foursquare had 4.25 million users ?
  90. math

    Which of the following is the number of milliliters in 2 gallons? (Note: 1 gallon = 4.4 liters; 1 liter= 1,000 milliliters) A. 440 B. 880 C. 4,400 D. 8,800 i think its D The hypotenuse (side C) of a triangle is 13 inches long. Which of the following pairs of measurements could...
  91. Calculus

    Derivative of the implicit Function: arctan(x^5y)=xy^5 Here is where I am at. I am pretty frustrated: arctan(x^5y)-xy^5=0 1/1+(x^5y)^2 * (d/dx(x^5)*y+x^5*d/dx(y))-(d/dx(x)*y^5+x*d/dx(y^5))=0 1/(1+x^5y)^2 * (5x^4y+x^5dy/dx) - (y^5+x^5y^4dy/dx) (5x^4y)/[(1+x^5y)^2] + (x^5dy/dx...
  92. physics

    1.what is the final velocity of a hoop that rolls with out slipping down a 3.00m high hill starting at rest? 2. a 1.80 m radius playground merry go round (disk = 1/2 m r^2) hass a mass of 120 kg and is rotating with an angular velocity of .600 rev/s. what is the angular ...
  93. Math

    Each triangle is a 30-60-90 triangle, and the hypotenuse of one triangle is the longer leg of an adjacent triangle. The hypotenuse of the largest triangle is 8 centimeters. What is the number of centimeters in the length of the longer leg of the smallest triangle? Express your...
  94. Math

    Which triangle is NOT possible to construct? Answers: A. A right isosceles triangle B. An acute equilateral triangle C. An Obtuse scalene triangle D. A right equilateral triangle My Answer: C. An Obtuse scalene triangle :) Thank you to anyone who helps. I appreciate it tons...
  95. science

    Read the scenario. In order to present a documentary about the safety of genetically modified organisms and their use in food, a television crew plans to devote an equal amount of time to filming two aspects of this issue: scientists and their research on genetically modified ...
  96. geometry

    Hexagon A is a regular hexagon. The total length of all the sides of the hexagon is 24 inches. Hexagon A is dilated about its center to create Hexagon B. The length of each side of Hexagon B is inches. By what factor was Hexagon A dilated to create Hexagon B?
  97. physics

    You and two friends are on top of the library 30 m above the ground. At the same time that you drop a ball, from rest, one of your friends tosses a ball straight up, giving it an initial velocity of 15 m/s, and your other friend tosses a ball straight down, giving it an ...
  98. MATH

    Reiny, the problem with the answer x>-2, why divide by 1? Is it because you can't divide with variable? Reworked problem -7x>-2(x+15)<10 -7x>-2(x+15) -7x + 2x > 30 -5x/-5 > 30/-5 x > -6 other side -2(x+15)<10 -2x-30<10 -2x-30+30<10+30 -2x/-2 < ...
  99. physics

    The speed of sound in air is approximately 340 m/s. The speed of sound in steel is approximately 5900 m/s. If your friend strikes one end of a steel pipe with a hammer while you listen at the other end, you will hear two distinct sounds: one traveling through the air and the ...
  100. Physics

    A particle with a mass of 2.0×10−5 kg and a charge of +2.0 microC is released in a (parallel plate) uniform horizontal electric field of 13 N/C. If the plates are 5.6 cm on each side, how much charge is on each? (in pC) From what I have so far, the formula E=(4piKQ)/A; ...
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