Answers edited by Lucy

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• What is the domain and range of #r(x)=sqrt(x+6)-1#?
  
• The 20th term of an arithmetic series is 131 and the sum of the 6th to 10th terms inclusive is 235. Find the sum of the first 20 terms. Can someone please help??
  
• 1. Is (x-3)(x²+3x+6) a Difference of cubes? 2.Is(2x+4)(4x²-8x+16)the sum of cubes?
  
• Which expression represents the volume of the box in terms of x?
  
• What is the discriminant of a quadratic function?
  
• What is the lim h → 0 (x+h)^1/2-(x)^1/2/h?
  
• How can this be solved?
  
• Help in absolute value question?!
  
• Which group on the periodic table is the least reactive? Why?
  
• how to solve cos^3x csc^3x tan^3x=csc^2x-cot^2x ?
  
• How do i solve this question?Find the size of each exterior angle of a regular octagon.
  
• An integer is one more than four times a number. If the product of the two integers is 39, then find the integers?
  
• How do you find the 7th term of the geometric sequence with the given terms a4 = -4, a6 = -100?
  
• How do you solve #16^ { - 2v } = 64^ { 2v }#?
  
• Name the strong acid containing chlorine?
  
• 8x3+y3+64-24xy factorize..?
  
• What is the chemical formula for ATP?
  
• How do you find the vertex and intercepts for #y = 4x^2 + 8x + 7#?
  
• Logarithms and Their Properties?
  
• How do you find the roots, real and imaginary, of #y= -3x^2 -2x +(2x+1)^2 # using the quadratic formula?
  
• How do you solve the rational equation #(y+2)/y = 1/(y-5)#?