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• which statement best describes why a machine is useful? a machine does a greater amount of work than the amount of work that is done on it. a machine does a smaller amount of work than the amount of work that is done on it. a machine can decrease both the input force and the input distance needed to do a given amount of work. a machine can decrease either the input force or the input distance needed to do a given amount of work.
  
• which of the following statements is not true about the ways in which our bodies are able to block pain? a. the release of endorphins in the body assists in alleviating pain. b. specific neural activity can limit incoming pain signals, alleviating pain. c. information from other sensory systems can close the pain gate, alleviating pain. d. a neural pathway found in the frontal lobe assists in alleviating pain.
  
• assisting with medications may be a part of care for which of the following sudden illnesses? select 3 answers.
  
• what is the first step once an essay question has been chosen?a.create an outline for the answerc.summarize the three main pointsb.identify vocabulary to be usedd.write the essay
  
• quadrilateral abcd has the vertices b(2, 5) and d(0,−3) . if abcd is a square, what are the coordinates of the other two vertices?
  
• a student plans to use the details in this passage as part of a research paper. what additional information is needed to properly credit the passage in the list of sources used?
  
• what impact does the use of dashes have on the rhythmic structure of this poem?
  
• challenges to growing civil society and democratic practices in the middle east
  
• which are steps in the process of completing the square used to solve the equation 3 – 4x = 5x2 – 14x? check all that apply.
  
• select all the correct answers. this chart presents data on greenhouse gas emissions caused by human activity from 1990 to 2012. which questions would help clarify this evidence? graph representing u.s greenhouse gas emissions by economic sector from years 1990 to 2013 on x-axis and emissions in million metric tons of carbon dioxide equivalents on the y-axis. also, different colors represent a different sector. which source of electricity generation caused the most emissions? what types of industries are responsible for greenhouse gas emissions? which natural sources of greenhouse gas emissions are shown here? why is agriculture the largest source of greenhouse gas emissions? what caused the dip in greenhouse gas emissions in transportation after 2007?