algebra

posted by .

Please check my work and correct if necessary. Thank You.

Using factoring and zero-product property, this is my solution for 9^2-30r+21=-4.
9r^2-30r+21=-4
9r^2-30r+25=0
(3r-5)(3r-5)=0
r=5/3

  • algebra -

    looks good to me

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Algebra

    Solve h=30r+20
  2. math

    Solve using the elimination method. Show your work. If the system has no solution or an infinite number of solutions, state this. -15r + 12s = 24 30r – 24s = 48
  3. intermediate algebra

    Soe using the eliminatin method.Show work.State if it has infinite solutions or no solutions...-15r+12s=24,30r-24s=48
  4. algebra

    Use factoring and the zero-product property to solve the following problems. 1.9r^2-30r+21=-4
  5. algebra

    use factoring and the zero-product property to solve 4a^2-11a+6=0 9r^2-30r+21=-4
  6. physics

    If body is rotating 30r.p.m in clockwise what is angular velocity and it direction
  7. Algebra

    Use factoring and the zero-product property to solve the following problems: z(z - 1)(z + 3) = 0 x^2 - x - 10 = 2 4a^ - 11a + 6 = 0 9r^r - 30r + 21 = -4 Please show work. Thank you so much!
  8. Algebra

    I was asked to use factoring and the zero-product property to solve the following problems. Can you please check my answers?
  9. algebra

    Using factoring and zero-product property,please solve the following: 9r^2 -30r +21=-4 Thanks very much.
  10. algebra

    Please solve the following problem by using factoring and the zero-product property. 9r^2-30r+21=-4 Thanks

More Similar Questions