Answers created by Sirach

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• How many moles of N2O5 are needed to produce 7.90 g of NO2? 2N2O5 = 4NO2 + O2
  
• What is 34,000 in scientific notation?
  
• What percent of 24 is 18?
  
• How to prove this ? if #7|k^2# then #7|k# for some #k\inZZ#
  
• How do you find the domain and range of #F(c)=9/5c + 32#?
  
• How do you solve #\frac{x}{4} + 2\leq 3#?
  
• How do you solve this system of equations: #6x - 7y = 19 and 3x + 4y = 2#?
  
• What is 250% of 44?
  
• What is the equation of the line passing through the point (4, 6) and parallel to the line y= 1/4x + 4?
  
• How do you solve and write the following in interval notation: # -12(x-4) +3 > 4x - 4 - 5x#?
  
• How do you write an equation of a line given (-20,-10) and (5,15)?
  
• What is the balanced equation of the reaction between gaseous propane and and oxygen gas?
  
• How do you find slope and intercepts to graph #9x-5y=4#?
  
• Line CD is tangent to circle A at point B. segment AB is a radius of circle A. what can be concluded about angle ABD?