Answers edited by marfre

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• A 4768kg roller coaster train full of riders approaches the landing dock at a speed of 17.1m/s. It is abruptly decelerated to a speed of 2.2m/s over a distance of 13.6m. What is the magnitude of the retarding force which acts upon the roller coaster cars?
  
• Make the truth table of the proposition ¬q→[(pΛq)V~p]?
  
• How do you find the domain and range of f(x)= 8/x-4 in Interval Notation?
  
• How do you graph #r = 3sin2θ#?
  
• Solve #(y + 2/y)^2 + 3y + 6/y = 4#?
  
• The volume of air in a model car is #40cm^3# . A scale of 1:50 was used to create the model. What is the volume of air in the actual car?
  
• What are an ionic formulas?
  
• How do you find #(g/h)(0)# given #f(x)=x^2-1 and #g(x)=2x-3# and #h(x)=1-4x#?
  
• You and your friend play a game in which you roll two dice. The first person to roll two dice with a sum of 5 wins. If you roll first, what is the probability that you win?
  
• Sin (60°+theta)-cos (30°-theta)=?
  
• Question #43f13
  
• How do you find all six trigonometric function of #theta# if the point #(0,-5)# is on the terminal side of #theta#?
  
• In which of these situations the work done by the force acting on the slab will be greater?
  
• How do you add #(8-8i)+(-7-i)# in trigonometric form?
  
• Point A is at #(-3 ,-4 )# and point B is at #(5 ,8 )#. Point A is rotated #pi # clockwise about the origin. What are the new coordinates of point A and by how much has the distance between points A and B changed?
  
• A pyramid has a base in the shape of a rhombus and a peak directly above the base's center. The pyramid's height is #3 #, its base has sides of length #2 #, and its base has a corner with an angle of #(3 pi)/8 #. What is the pyramid's surface area?
  
• Question #d53c9
  
• How do you factor this? #6x^2-249y^2#
  
• How do you find the range of the data set: 5, 3, 8, 4, 9, 7, 5, 6, 2, 3, 6, 8, 4?
  
• Question #c6e98
  
• A model deck is #9 i n#. by #16 i n#. How do you use the scale #1/2 i n : 1 ft# to find the dimensions of the actual deck?
  
• How many poles will be in a pile of telephone poles if there are 30 in the bottom layer, 29 in the second, and so on, until there is one in the top layer?
  
• How do you graph #f(x)=1/(x^2-2x)# using holes, vertical and horizontal asymptotes, x and y intercepts?
  
• A cone has a height of #12 cm# and its base has a radius of #8 cm#. If the cone is horizontally cut into two segments #8 cm# from the base, what would the surface area of the bottom segment be?
  
• If an object with a mass of #2 kg # changes speed from #2 m/s# to # 4m/s#, by how much does its kinetic energy change?
  
• Find the maximum and minimum points of the curve y = #x^3-x^2-5x#?