Use the given vectors to find the indicated expression.v = 5i + 3j + 5k, w = -3i + 5j - 3k, u = 4i + 2j - 5kFind w ? (v × u).
A. 0
B. 206
C. 306
D. 386
Answer: C
Mathematics
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In a school survey, students showed these preferences for instructional materials. Answer the question.
About how many students would you expect to prefer films in a school of 650 students?
A. About 130 students B. About 20 students C. About 78 students D. About 117 students
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Graph the parabola or ellipse. Include the directrix that corresponds to the focus at the origin.r = 
A. 
B. 
C. 
D. 
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Find a z-score satisfying the given condition.33% of the total area is to the right of z.
A. 0.45 B. 0.44 C. 0.74 D. -0.44
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Factor out the largest possible common factor.30m9 + 27m6 - 15m3
A. 3m3(10m6 + 9m3 - 5) B. 3(10m9 + 9m6 - 5m3) C. -3m3(10m6 - 9m3 + 5) D. m3(30m6 + 27m3 - 15)
Mathematics