college algebra

posted by .

how do you evaluate this matrix
[12 -9]
[-3 5]

  • college algebra -

    I will have to assume that you mean find the determinant

    12*5 - (-9)*(-3)

    = 60 - 27

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Algebra II

    I skipped algebra I so I never learned about matrices. If you had a 2X3 matrix & multiplied it by a 3X2 matrix, what size would the product matrix be?
  2. Algebra 2

    The problem simply is this: Evaluate: 12 5 -2 -3 0 1 -5 4 2 These figures are in matrix form. I don't understand what it is I am supposed to be evaluating.
  3. MATHS----Matrix

    For a given square matrix A the predicted values of matrix B are: predicted B=A(A'A)^(-1)A'B why is the matrix C=A(A'A)^(-1)A' an idempotent and symmetric matrix?
  4. Maths: Algebra Matrices Class 12th

    matrix{{0, 1, -1}, {2, 1, 3}, {1, 1, 1}} matrix{{1, -1, x}} matrix{{0}, {1}, {1}}=0 Find the value of x Don't give me the direct answer. Please tell me how to go about this. Draw in your notebook and then solve
  5. Algebra-Matrix

    How would I do these Matrices? 1. |1/2 14 10 -8| 2, Let matrix A = [8 -2 4 7 ] Let matrix B = 2A, Find b_22
  6. Algebra

    Evaluate the determinant of the matrix. [-4 5 6 0 4 4 -2 -5 4]
  7. Algebra 2

    Evaluate the determinant of each matrix. 1 2 3 3 1 0 1 2 1
  8. algebra

    4. A triangle has vertices (–2, –3), (3, 5), and (8, –1). a. Write a matrix expression to represent reflecting the triangle across the x-axis. Evaluate the matrix expression and list the coordinates of the vertices of the transformed …
  9. Math

    Hi! I need help with these two questions. Thanks! :) 1.) Can we multiply the Matrix A (which is 3 x 4 matrix) by the other matrix, Matrix B (which is 3 x 4 matrix)?
  10. Algebra II

    A triangle has vertices (-2,-3), (3,5), and (8,-1) Write a matrix expression to represent rotating the triangle 90° clockwise. Evaluate the matrix expression and list the coordinates of the vertices of the transformed figure. Please …

More Similar Questions