Answers edited by Lucy

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