Use the figure to find the exact value of the trigonometric function.Find cos 2?.
A. 
B. 
C. - 
D. - 
Answer: C
Mathematics
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Solve the system by the addition method. If there is no solution or an infinite number of solutions, so state. Use set notation to express the solution set.
A. infinitely many solutions; {
-6x + 4y = -6} or {
12y = -18 + 18x}
B. {(-6, 4)}
C. no solution; ?
D. {(0,0)}
Mathematics
Perform the indicated operations.20
- 7
A. 13
B. 27
C. 13
D. 65
Mathematics
Find the y- and x-intercepts for the equation. Then graph the equation.3x - y = -3
A. (0, 3), (1, 0)
B. (0, -3), (1, 0)
C. (0, 3), (9, 0)
D. (0, 3), (-1, 0)
Mathematics
Find the indicated sum of matrices. 
+ 
A. 
B. 
C. 
D. 
Mathematics