posted by Saria

16. I am supposed to multiply the matrices B and C by each other B is:

7 6

2 -3

-1 8

9 5

and C:

0 8

-2 1

Would someone mind showing me how to multiply CB? Thanks


  1. Don

    Oh god multiplying it by hand will take you FOREVER! If you have a graphing calculator, than its very easy. My teacher only taught us how to do it once, then she said just do it on the calculator from now on. The only way 2 matices can multiply with each other is if its dimensions have the same inner number. For example

    3x2 2x3 the inner numbers are the same (2) so you can multiply it. If they are not the same, then there is no way to multiply it.

    In your case, it is possible to multiply, But extremely long to explain, its way better to do it on the calculator. I think every teacher actually encourages students to do it using the calculator, it just saves time.

Respond to this Question

First Name

Your Answer

Similar Questions

  1. Math (matrices)

    No one answered my matrix question. Let me rephrase: Let A, B, and 0 be 2x2 matrices. Assuming that A is invertible and 0 is all zeroes, what is the inverse of the matrix [A|0] [B|A] (that is a 4x4 matrix represented as 4 2x2 matrices) …
  2. Math: matrices

    If A and B are both square n x n matrices, If AB = I, prove BA = I Presumably you have to do this without using the usual properties of the inverse of matrices. But we do need to use that if there exists a matrix B such that A B = …
  3. linear algebra

    if: A and B are matrices and A^2 is similar to B^2 Is A guaranteed to be similar to B?
  4. algebra

    im not to good at algebra so here goes im supposed to multiply 5.(3.2) i know im supposed to multiply both sides by 5 but be on that im not sure what to do help please?
  5. Math

    I have a few questions about T-Matrix. In excel, I am suppose to work with powered matrices to construct a weighted T matrix, using a scalar of .7. Does this mean I multiply each of the powered matrices by .7?
  6. math

    Multiply (4ã6-12ã5)(2ã6+6ã5) Would the answer be 8ã64-72ã25 I donft think I am supposed to multiply the 4 and 6 or the 2 and 6
  7. algebra 2

    I am trying to factor the expression -8y^2+28y-60 but can't get an answer that is correct. Here is an example of how the problem is supposed to be factored. If you have 21x2-77x-28 the first thing you would do is (21x )(x ). Next you …
  8. Precalculus

    Find the values of x and y. Matrices.. [-4 2 3 5 3 5 2 -3 1] TIMES [2 x 5] EQUALS [9 38 y] It is difficult for me to type the matrices in but.... The first matrix is 3x3 consisting of -4,2,3 in the first row.. 5,3,5 in the second row …
  9. maths

    If two matrices are known and are inverse of each other.How can we use these matrices to find the point of intersections for the given set of 3D planes?
  10. Algebra

    Solve for x in the following matrix equation. [5x-8 1] = [2 1] [3 4m-1] [3 7m+6] How do you do this?

More Similar Questions