Use the given vectors to find the indicated expression.v = -3i + 4j + 2k, w = -5i - 3j + 5k, u = 2i + 2j - 3kFind w ? (v × u).
A. 0
B. 25
C. 73
D. -7
Answer: B
Mathematics
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Use a trigonometric substitution to evaluate the integral.
A. 0.641 B. 0.053 C. 0.260 D. 0.043
Mathematics
Solve the problem.A basketball player shoots the ball with a velocity of 15.4 ft/s at an angle of 37.9° with the horizontal. To the nearest tenth, find the magnitude of the horizontal component of the resultant vector.
A. 9.5 ft/s B. 12.2 ft/s C. 6.1 ft/s D. 4.8 ft/s
Mathematics
Solve the problem.On a flywheel with a 79.9-mm radius, how long is an arc subtended by a central angle of 4.07 rad?
A. 2,043 mm B. 12,991 mm C. 325 mm D. 650 mm
Mathematics
Find the real solutions, if any, of the equation. Use the quadratic formula.4x2 + 12x + 2 = 0
A. {
, 
}
B. {
, 
}
C. {
, 
}
D. {
, 
}
Mathematics