Use matrices to solve the system of equations (if possible). Use Gaussian elimination with back-substitution or Gauss-Jordan elimination.
?

?

A. ?(-2, -1, 8, 6)
B. (-2, 0, 8, 6)
C. (-2, 0, 8, -6)

D. ?(-2, -1, -8, -6)

E. (-2, 0, -8, 6)


Answer: B

Mathematics

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A.  = 5t3 -   - 
B.  = 5t4 -   - 
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For the polynomial, list each real zero and its multiplicity. Determine whether the graph crosses or touches the x-axis at each x -intercept.f(x) = 3(x - 2)(x + 7)2

A. 2, multiplicity 1, touches x-axis; -7, multiplicity 2, crosses x-axis B. -2, multiplicity 1, crosses x-axis; 7, multiplicity 2, touches x-axis C. 2, multiplicity 1, crosses x-axis; -7, multiplicity 2, touches x-axis D. -2, multiplicity 1, touches x-axis; 7, multiplicity 2, crosses x-axis

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Establish the identity.sin = -cos ?

What will be an ideal response?

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Write the exponential equation in logarithmic form. ? ?

A.
B.
C.
D.
E.

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