Use the even-odd identities to find the exact value of the expression. cos (-30°)
A. - 
B. - 
C. 
D. 
Answer: D
Mathematics
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Evaluate the integral.
A. 10? B. 15? C. 10 D. 15
Mathematics
Use the graph to find a ? > 0 such that for all x, 0 < 
< ? ? 
< ?.
A. 0.4 B. 0.04 C. 11 D. 0.5
Mathematics
Determine if the ordered pair is a solution to the system of linear inequalities in two variables.
(5, -3)
A. Yes B. No
Mathematics
Use the formula for the sum of the first n terms of a geometric sequence to solve.Find the sum of the first 14 terms of the geometric sequence: 
, - 1, 2, - 4, 8, . . . .
A. - 2727
B. - 
C. - 
D. - 
Mathematics