Solve the system by Gauss-Jordan elimination.
?
?
Please enter your answer as an ordered pair in the form (x, y).
What will be an ideal response?
(-5, -4)
Mathematics
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Rewrite the trigonometric expression as an algebraic expression involving the variable u. Assume that 
and that the value of the "inner" inverse trigonometric expression represents an angle ? such that 
cos (tan-1 u)
A. 
B. 
C. u
D. 
Mathematics
Solve the problem.Since cos 
= - 
and 
is in the interval [0, ?], cos-1
=
A. 
B. 
C. 
D. 
Mathematics
Find the zeros of the function. Give approximate solutions rounded to three decimal places when necessary.f(x) = 3x2 - x + 5
A. 0.167 ± 1.28 B. 0.167 ± 1.28i C. 0.167 ± 2.56 D. 0.167 ± 2.56i
Mathematics
Write the first five terms of the geometric sequence.an = -7an-1; a1 = -5
A. -5, -12, -19, -26, -33 B. -5, 35, -245, 1715, -12,005 C. 35, -245, 1715, -12,005, 84,035 D. -7, -35, -245, -1715, -12,005
Mathematics