Changing The Subject Of A Formula

8 Questions | Total Attempts: 548

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Changing The Subject Of A Formula - Quiz


Questions and Answers
  • 1. 
    What is the subject of the following equation  h=2x+7y
  • 2. 
    Change the subject of this equation to C=2πr
    • A. 

      R=C/2π

    • B. 

      R=2Cπ

    • C. 

      R=2π/C  

    • D. 

      R=2Cπ

  • 3. 
    When changing the subject of an equation, if you divide the left side of your equation by a Y, what do you need to do to the right side of the equation?
    • A. 

      Multiply by Y

    • B. 

      Divide by Y

    • C. 

      Add Y

    • D. 

      Subtract Y

  • 4. 
    The value of U in the equation r=2x+U  when x =3 and r = 10.
  • 5. 
    Make the subject of the formula in the following equation x - 2c = b
    • A. 

      X=b+2c  

    • B. 

      X=b-2c

    • C. 

      X=2c/b

    • D. 

      X=2b/ c

  • 6. 
    True or false: To get rid of the square root when transposing we square both sides of the equation.
    • A. 

      True

    • B. 

      False

  • 7. 
    True or false: To get rid of the square symbol when changing the subject of a formula we can cube root both sides of the equation.
    • A. 

      True

    • B. 

      False

  • 8. 
    The steps used when making x the subject of this formula 7x2-4r=k
    • A. 

      Add 4r to both sides, divide both sides by 7 and square both sides of the equation.

    • B. 

      Subtract 4r to both sides, divide both sides by 7 and square root both sides of the equation.

    • C. 

      Add 4r to both sides, multiply both sides by 7 and square root both sides of the equation.‚Äč

    • D. 

      Add 4r to both sides, divide both sides by 7 and square root both sides of the equation.

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