Answers edited by Júlio B.

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• A spring with a constant of `4 (kg)/s^2` is lying on the ground with one end attached to a wall. An object with a mass of `6 kg` and speed of `5 m/s` collides with and compresses the spring until it stops moving. How much will the spring compress?
  
• Question #79c8f
  
• How do you solve the following system?: `5x + 2y =1 , 8x-9y= 12`
  
• What is the name of `N_2O_3`?
  
• What is the distance between `(8, 2)` and `(4, 7)`?
  
• What role does ATP play in cellular function?
  
• What is the equation of the line with slope `m= 6/13` that passes through `(12,19)`?
  
• How do you write "three times a number, added to 9, is 39" as a mathematical equation?
  
• How do you determine whether the given ordered pair (2, -3) is a solution of the system `x=2y+8` and `2x+y=1`?
  
• What is the vertex of `y=-2(x+3)^2+1`?