Solve the problem.The displacement s (in cm) of a linkage joint of a robot is given by s = (7t - t2)2/3, where t is the time (in s). Find the velocity of the joint for t = 5.2 s.
A. -1.08 cm/s
B. -4.78 cm/s
C. 0.95 cm/s
D. -0.51 cm/s
Answer: A
Mathematics
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Find the vertex, focus, and directrix of the parabola. Graph the equation.(y + 1)2 = (x - 3)
A. vertex: (3, -1)
focus: (3, -0.75)
directrix: y = -1.25
B. vertex: (3, -1)
focus: (3.25, -1)
directrix: x = 2.75
C. vertex: (1, -3)
focus: (1.25, -3)
directrix: x = 0.75
D. vertex: (-3, 1)
focus: (-3, 1.25)
directrix: y = 0.75
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Solve graphically.x = -yy + x = 6
A. Infinite number of solutions B. (1, 5) C. (1, 1) D. No solution
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Use <, >, or = to make a true statement.6859 ? 6643
A. < B. > C. =
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Combine the complex numbers.(6 + 4i) - (-4 + i)
A. -10 - 3i B. 2 + 5i C. 10 + 3i D. 10 - 3i
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