Find the indicated trigonometric function, where ? is the radian measure of the given angle. Give an exact answer with a rational denominator.Find cos ?.

A.
B.
C.
D.


Answer: A

Mathematics

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Use the slopes of UQ, UR, US, and UT to estimate the rate of change of y at the specified value of x.x = 5

A. 5 B. 1 C. 2 D. 0

Mathematics

Find the greatest common factor, GCF, of the expressions.x6, x2

A. x8 B. x2 C. x12 D. x4

Mathematics

The total daily profit (in dollars) realized by Weston Publishing in publishing and selling its dictionaries is given by the profit function

?

?
where x stands for the number of deluxe editions and y denotes the number of standard editions sold daily. Weston's management decides that publication of these dictionaries should be restricted to a total of exactly 700 copies/day. How many deluxe copies and how many standard copies should be published each day to maximize Weston's daily profit?
?

A. 450 deluxe copies, 330 standard copies
B. 450 deluxe copies, 240 standard copies
C. 480 deluxe copies, 330 standard copies
D. 400 deluxe copies, 300 standard copies
E. 480 deluxe copies, 300 standard copies

Mathematics

For the pair of functions, find the indicated domain.f(x) = x2 - 81, g(x) = 2x + 3Find the domain of g ? f.

A. (-9, 9)
B. (-?, ?)
C.
D.  ? 

Mathematics