Answers edited by Fleur

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• At 20.0°C, the vapor pressure of ethanol is 45.0 torr, and the vapor pressure of methanol is 92.0 torr. What is the vapor pressure at 20.0°C of a solution prepared by mixing 31.0 g methanol and 59.0 g ethanol?
  
• What are the important points needed to graph #f(x) = -(x + 2)(x-5)#?
  
• Question #9b974
  
• How do you find the domain and range of #y =sqrt (x^2 - 9)#?
  
• Of the following: Hematopoiesis, Red marrow, Yellow marrow, Spongy bone, which does not belong?
  
• What is the polar form of #( -7,-1 )#?
  
• What is the chemical formula for sodium sulfite?
  
• How do you simplify #sqrt(a^2)#?
  
• How do you simplify #2^8/2^3#?
  
• How do you solve the #triangle ABC# given #A=50^circ, a=2.5, C=67^circ#?
  
• How do you solve #3x^2 = 108#?
  
• How do you describe the transformation of #f(x)=sqrt(3x)+1# from a common function that occurs and sketch the graph?
  
• Question #4f4c0
  
• How do you find the exact value of #arctan 1#?
  
• Question #89e56