Find the exact value by using a half-angle identity.cos 165°
A. 
B. - 
C. 
D. - 
Answer: D
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Determine convergence or divergence of the alternating series.
A. Diverges B. Converges
Find fx, fy, and fz.f(x, y, z) = z(ex)y
A. fx = zyexy; fy = zxexy; fz = zexy B. fx = zyexy; fy = zxexy; fz = exy C. fx = zexy; fy = zexy; fz = exy D. fx = zxexy; fy = zyexy; fz = exy
Find the distance that the particle travels in the first 3 seconds (from t = 0 to t = 3 ).
A particle is initially at the origin. Its velocity, in meters per second, at any time t , t ? 0 , is given by v (t ) = 2t 2 + 6t .
Solve the problem.If there are x teams in a sports league and all the teams play each other twice, a total of N(x) games are played, where N(x) = x2 - x. A soccer league has 6 teams, each of which plays the others twice. If the league pays $44 per game for the field and officials, how much will it cost to play the entire schedule?
A. $1408 B. $1848 C. $1584 D. $1320