algebra 1

posted by .

4x-4y=12 -7x+4y=-36

  • algebra 1 -

    add the two equations to get

    -3x = -24
    x = 8
    so, y = 5

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. math,algebra II

    I have to work with these types of problems dealing with matrises can someone show me how to solve them.Heres one of them: Directions: Find the values of the variables in each equation in the first matrix it looks like this a+2 3z+1 …
  2. 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?
  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. linear algebra

    3. Suppose A is symmetric positive definite and Q is an orthogonal matrix (square with orthonormal columns). True or false (with a reason or counterexample)?
  5. Algebra II

    Can someone please help me with this problem. Given Matrix Y= 2 -7 4 and -1 1 0 Matrix Z= 3 4 1 4 2 -4 Solve for matrix X. X-2Y=3X+Z HELP PLEASE!!!
  6. 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
  7. Algebra

    Need help with these-- 40. The graph of the following system yields perpendicular lines: x + 2y = -10 -4y = 2x + 20 True or False?
  8. 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
  9. algebra

    Hi guys: Can any one please tell me what does this means?
  10. 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)?

More Similar Questions