ANSWERS: 2
  • No. Do it yourself. It is your schoolwork, thus your responsibility. I really hate people who try to get others to do their work for them!
  • That it is a system of three equations with three variables which can be solved with determinants. I suspect that the last equation should also have a x term and should read: -x - 2y + 4z = 29; you can find the rules to calculate the determinant there: https://www.cliffsnotes.com/study-guides/algebra/algebra-ii/linear-equations-in-three-variables/linear-equations-solutions-using-determinants-with-three-variables

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