Use the Half-angle Formulas to find the exact value of the trigonometric function. cos 165°

A. - 
B.
C. - 
D.


Answer: C

Mathematics

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Provide an appropriate response.Factor: 12a2 + 5a - 2

A. (4a - 1)(3a + 2) B. (2a - 2)(6a + 1) C. (12a - 1)(a + 2) D. (4a + 1)(3a - 2)

Mathematics

Subtract. - 

A.
B. -  
C.  
D. -  

Mathematics

Simplify and write the resulting polynomial in descending order of degree.-11m9 + 2m6 - 9m2 + 14m9 - 13m6

A. 391m B. 3m9 - 11m6 - 9m2 C. 23m17 D. 3m9 + 11m6 + 9m2 

Mathematics

Solve the problem.It takes 17 minutes to set up a candy making machine. Once the machine is set up, it produces 15 candies per minute. Use an inequality to find the number of candies that can be produced in 2 hours if the machine has not yet been set up.

A. at most 30 candies B. at most 1785 candies C. at most 510 candies D. at most 1545 candies

Mathematics