📢 Too many exams? Don’t know which one suits you best? Book Your Free Expert 👉 call Now!
  • google app store apple app store
    • ✖

      Question

      If a + b2 + c2 = 16, x2

      + y2 + z2 = 25 and ax + by + cz = 20, then the value of (a+b+c)/(x+y+z)
      A 3/5 Correct Answer Incorrect Answer
      B 5/3 Correct Answer Incorrect Answer
      C 4/5 Correct Answer Incorrect Answer
      D 5/4 Correct Answer Incorrect Answer

      Solution

      a2 + b2 + c2 = 16, x2 + y2 + z2 = 25 and ax + by + cz = 20 let a = 0, b= 0 ,x=0,y=0 we get 02 + 02 + c2 = 16, c2 = 16, c = 4 02 + 02 + z2 = 25 , z2 = 25, z = 5 putting value of c and z 0x + 0y + cz = 20 satisfy the above equation putting the values (a+b+c) / (x+y+z) = (0+0+4) / (0+0+5) 4/5

      Practice Next
      More Equations Questions

      Relevant for Exams:

      ask-question