Practice Question and Answer

Q:

The graphs of the linear equations 3x-2y=8 and 4x+3y=5 interest at the point P(α, β). What is the value of (2 α - β)?

773 0

  • 1
    3
    Correct
    Wrong
  • 2
    4
    Correct
    Wrong
  • 3
    6
    Correct
    Wrong
  • 4
    5
    Correct
    Wrong
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Answer : 4. "5"

Q:

If x2+4y2=17 and xy=2, where x>0,y>0, then what is the value of x3+8y3?

842 0

  • 1
    95
    Correct
    Wrong
  • 2
    85
    Correct
    Wrong
  • 3
    65
    Correct
    Wrong
  • 4
    76
    Correct
    Wrong
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Answer : 3. "65"

Q:

if a+b+c=7 and a3+b3+c3-3abc=175, then what is the value of (ab+bc+ca)?

926 0

  • 1
    8
    Correct
    Wrong
  • 2
    9
    Correct
    Wrong
  • 3
    7
    Correct
    Wrong
  • 4
    6
    Correct
    Wrong
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Answer : 1. "8"

Q:

$$ secA(secA+tanA)(1-sinA)\over (cosec^2A-1)sin^2A$$ is equal to:

852 0

  • 1
    cotA
    Correct
    Wrong
  • 2
    cosA
    Correct
    Wrong
  • 3

       sec2A

    Correct
    Wrong
  • 4

      cos2A

    Correct
    Wrong
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Answer : 3. "

   sec2A

"

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