Find the absolute value of the complex number.z = -4
A. -16
B. -4
C. 16
D. 4
Answer: D
Mathematics
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A. - 
B. - 1
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Mathematics
In a certain college, 33% of the physics majors belong to ethnic minorities. Find the probability of the event from a random sample of 10 students who are physics majors.Exactly 4 do not belong to an ethnic minority.
A. .0467 B. .2564 C. .2253 D. .0547
Mathematics
Determine whether the relation is a function.{(-9, 5), (-9, -4), (1, -6), (5, -5), (8, -2)}
A. Function B. Not a function
Mathematics
Evaluate the expression for the given replacement values.y - 1.8(0.45 + x), for x = 20.5, y = 84.1
A. 121.81 B. 62.79 C. 46.39 D. 103.25
Mathematics