Provide an appropriate response.Which of the following statements are true?I: If S is a nonempty set, then conv S ? S.II: If S and T are convex sets, then S ? T is also convex.
A. Both I and II
B. I
C. II
D. Neither I or II
Answer: C
Mathematics
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Determine the symmetries of the curve.r = 3 sin ? - 3 cos ?
A. x-axis only B. y-axis only C. No symmetry D. x-axis, y-axis, origin
Mathematics
Find the arc length parameter along the curve from the point where t = 0 by evaluating 
r(t) = (1 + 5t)i + (1 + 8t)j + (4 - 4t)k
A. 4
t
B. 
t
C. 
t
D. 
t
Mathematics
Perform the indicated operation. Assume that all variables are nonnegative.27
- 12
A. 15
B. 75
C. 15
D. 39
Mathematics
Use half-angle identities to find the exact value of the expression.sin 22.5°
A. - 
B. 
C. 
D. - 
Mathematics