Simplify. ? 

A. -9
B. 12
C. -10
D. -5


Answer: C

Mathematics

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Provide an appropriate response.If r > 0, 0 ? ? < 2?, and r cis ? has real part equal to 0, then what must ? be?

A. ?
B.
C. 0
D.

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An elliptical stained-glass insert is to be fitted in a 6ft by 4 ft rectangular opening (see figure). Using the coordinate system shown, find an equation for the ellipse. ?   ?

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Determine where the given function is increasing and where it is decreasing. s(x) = -x2 - 20x - 84

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Mathematics