Answers edited by FRANK Z.

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• The point (-2 and -4) is in which quadrant of a coordinate grid?
  
• How do you simplify `sqrt3*3sqrt21`?
  
• How do you solve `0.5=4.1x-2(1.3x-4)`?
  
• A cone has a height of `15 cm` and its base has a radius of `9 cm`. If the cone is horizontally cut into two segments `6 cm` from the base, what would the surface area of the bottom segment be?
  
• What are the answers and how do you solve them?