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.Seven or more belong to an ethnic minority.
A. 0.0028
B. 0.0154
C. 0.0185
D. 0.0032
Answer: C
Mathematics
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Evaluate the expression.(-4)-1
A. -4
B. - 
C. 
D. 4
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Determine whether the improper integral converges or diverges.
A. Converges B. Diverges
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Solve the system of equations by substitution, if a solution exists.
A. x = 3, y = 6 B. x = 4, y = 5 C. No solution D. x = -4, y = 6
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Solve the problem.The speed of a vehicle is inversely proportional to the time it takes to travel a fixed distance. If a vehicle travels a fixed distance at 10 miles per hour in 45 minutes, how fast must it travel to cover the same distance in 15 minutes?
A. 30 miles per hour
B. 
miles per hour
C. 
miles per hour
D. 
miles per hour
Mathematics