Answers edited by Adam

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• What is the distance between #(7, 4)# and #(10, 8) #?
  
• What is the distance between #(1, 4)# and #(–3, –2)#?
  
• What is the slope of any line perpendicular to the line passing through #(30,39)# and #(18,10)#?
  
• How do you solve for a in #sqrta + 9 = b + 3 #?
  
• What is the volume? and how to change the unit of the following question? I'm not sure about the (b) part.
  
• If the velocity changes from 10 m/s to 12 m/s in one second, what is the acceleration?