Use a half-angle formula to find the exact value of the expression.sin 
A. 
B. - 
C. 
D. - 
Answer: C
Mathematics
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Provide an appropriate response.If the derivative of an even function f(x) is zero at x = c, can anything be said about the value of f' at 
Give reasons for your answer.
What will be an ideal response?
Mathematics
Graph the ellipse. Give the coordinates of the center, as well as the values of a and b.64x2 + y2 - 384x + 512 = 0
A. center (3, 0), a = 1, b = 8
B. center (0, 3), a = 8, b = 1
C. center (3, 0), a = 1, b = 8
D. center (-3, 0), a = 8, b = 1
Mathematics
Solve the problem.The results of a school election for student president are shown in the following table. 
What is the probability that a randomly polled voter voted for Candidate C?
A. 0.28 B. 0.12 C. 0.25 D. 0.50
Mathematics
Solve.
= 4
A. 1 B. ±7 C. 1, 7 D. 7, 1j
Mathematics