Answers created by SFCOUNTRY

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• How do you solve #-7(x-3) = -4#?
  
• How do you solve the system of equations #-2x + 3y = 3# and #5x - 6y = - 3#?
  
• How do you solve the quadratic using the quadratic formula given #x^2-4x-7=0#?
  
• Question #c32eb
  
• Two objects have masses of #33# #Mg# and #18# #Mg#. How much does the gravitational potential energy between the objects change if the distance between them changes from #81# # m# to #3# #m#?
  
• What is the role of intermolecular forces of attraction?