Use trigonometric identities to find the exact value.
A. 
B. 
C. 
D. 
Answer: C
Mathematics
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Use Venn diagrams to determine whether the following statements are equal for all sets A and B.(A ? B)', A' ? B'
A. not equal B. equal
Mathematics
Find the solution or solutions, if any exist, to the system.
A. x = 1, y = -1, z = 1 B. x = 0, y = 0, z = 1 C. x = -1, y = 1, z = 1 D. x = 0, y = 1, z = 0
Mathematics
Round the decimal to the given place value.79.8135 (nearest thousandth)
A. 79.804 B. 79.814 C. 79.824
Mathematics
The pitch, or frequency, of a vibrating string varies directly with the square root of the tension. If a string vibrates at a frequency of 600 hertz due to a tension of 2 pounds, find the frequency when the tension is 98 pounds. ?
A. 
B. ?
C. 
D. ?
E. ?
Mathematics