Find all values of ? in [0°, 360°) that satisfy the equation.cos ? = - 
A. {210°, 330°}
B. {60°, 120°}
C. {150°, 210°}
D. {60°, 300°}
Answer: C
Mathematics
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Find the unknown diameter or radius in the figure.
A. 148 in. B. 222 in. C. 37 in. D. 25 in.
Mathematics
Perform the indicated operation.
- 
A. 
B. 9
C. 9x
D. 
Mathematics
Decide whether or not the ordered pair is a solution of the system.(-5, 2)x + y = 7x - y = 3
A. Yes B. No
Mathematics
Write the augmented matrix for the system.
A. 
B. 
C. 
D. 
Mathematics