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    solutions for system of equations

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    Use the substitution method to find all solutions for the sytem of equations. Show work.

    Question:
    {2x +y = 7
    {x + 2y = 2

    Question:
    {x^2 + y^2 = 25
    { y = 2x

    Question:
    { x^2 + y = 9
    {x - y + 3 = 0)

    Question:
    { x^2 - y = 1
    {2x^2 + 3y = 17

    Use the elimination method to find all solutions of the system of equations. Show work.

    Question:
    {4x - 3y = 11
    {8x + 4y = 12

    Question:
    {3x^2 + 4y=17
    {2x^2 + 5y = 2

    Question:
    {2x^2 + 4y = 13
    x^2 - y^2= 7/2

    Question:
    {x^2 - y^2 = 1
    {2x^2-y^2 = x + 3

    Find the determinant of the matrix, if it exists. Show any work.
    Question:
    [0 -1]
    [2 0]

    Question:
    [-2 1]
    [ 3 -2]

    Find the determinant of the matrix. Determine whether the matrix has an inverse, but don't calculate the inverse. Show work.

    Question:
    [0 -1 0]
    [2 6 4]
    [1 0 3]

    Question:
    [1 2 5]
    [-2 -3 2]
    [3 5 3]

    Find the first four terms and the 100th term of the sequence. Show work.
    Question:
    an= 2n+3

    Question:
    an = n2 +1

    Question:
    an=1n^2

    Question:
    an = (-1)^n+1 n
    ------
    n+1

    Question:
    an=3

    Find the Sum (these have the symbols that look like a pointy E/properties of sums. Show work.

    Question:
    4
    E (symbol) k2
    k=1

    Question:
    100
    E (symbol) (-1)^j
    j=1

    Question:
    12
    E (symbol) 10
    i=4

    Question:
    3
    E (symbol) i2^i
    i=1.

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    https://brainmass.com/math/matrices/solutions-system-equations-478468

    Solution Summary

    The solution provides detailed explanation for many systems of equations.

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