Use periodic properties of the trigonometric functions to find the exact value of the expression.cos 
A. undefined
B. 0
C. 1
D. -1
Answer: B
Mathematics
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Determine whether the function is an exponential function.-5x
A. Yes B. No
Mathematics
The Boolean expression for a 3 input AND gate with inputs A, B, and C is:
a. ABC b. AB + C c. ÄÄ AB ú C d. Ä ABC e. A + B + C
Mathematics
Simplify by removing grouping symbols and combining like terms.3[a - b(2a - 3b) - 3b2]
A. 3a - 9b - 6ab - 9b2 B. 3a - 6ab C. 3a - 6ab - 18b2 D. 3a - 2ab
Mathematics
Solve the problem.y varies directly as z and y = 221 when z = 13. Find y when z = 19.
A. 361 B. 289 C. 323 D. 169
Mathematics