Find the exact value of the expression.cos

A.
B.
C.
D.


Answer: D

Mathematics

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For the given function, find the indicated function value.For f(x) = , find f(-1).

A.
B. 3
C. 2
D. Does not exist as a real number

Mathematics

Select the smaller of the two given numbers.18, ?-30?

A. ?-30? B. 18

Mathematics

Solve the problem.A breed of cattle needs at least 10 protein and 8 fat units per day. Feed type I provides 6 protein and 2 fat units at $4 per bag. Feed type II provides 2 protein and 3 fat units at $3 per bag. What mixture of Feed type I and Feed type II will fill the dietary needs at minimum cost?

A. 0 bags of Feed type I, 5 bags of Feed type II B. 1 bag of Feed type I, 1 bag of Feed type II C. 1 bag of Feed type I, 2 bags of Feed type II D. 4 bags of Feed type I, 0 bags of Feed type II

Mathematics

Solve the system of equations by elimination.4x + 42y = 428x - 6y = -6

A. (1, 0) B. (0, 1) C. (1, 1) D. (0, 0)

Mathematics