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
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Find the second derivative of the function.s =
A. = 5t3 -
-
B. = 5t4 -
-
C. = 20t5 +
+
D. = 20t3 +
+
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
Establish the identity.sin = -cos ?
What will be an ideal response?
Write the exponential equation in logarithmic form.
?
?
A.
B.
C.
D.
E.