Assume that, at a certain college, 33% of all physics majors belong to ethnic minorities. Given a random sample of 10 physics majors, find the probability of the indicated event. Round your answer as appropriate.No more than 6 belong to an ethnic minority.
A. .9815
B. .9846
C. .913
D. .0547
Answer: A
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Solve the problem.What is the intensity in watt/m2 of a noise that's loudness is measured at 86 decibels?
A. 5.43 × 1015 watt/m2 B. 3.98 × 10-4 watt/m2 C. 3.98 × 10-3 watt/m2 D. 8.6 × 10-10 watt/m2
Find the least common denominator (LCD).
, 
, 
A. (k - 7)(k - 6)3(k - 1)(k + 4) B. (k - 7)(k - 6)(k - 1)(k + 4) C. (k - 7)(k - 6)(k - 1) D. (k - 7)(k - 1)(k + 4)
Factor the expression completely. If the polynomial will not factor, write "prime."8z2 + 6z - 9
A. (8z - 3)(z + 3) B. (4z + 3)(2z - 3) C. (4z - 3)(2z + 3) D. prime
Find all cube roots of the complex number. Leave answers in trigonometric form.125i
A. 5 cis 30°, 5 cis 150°, 5 cis 270° B. 5 cis 60°, 5 cis 180°, 5 cis 300° C. 1, -1, -i D. 5 cis 0°, 5 cis 120°, 5 cis 240°