Find the expected value.Suppose that 1,000 tickets are sold for a raffle that has the following prizes: one $300 prize, two $100 prizes, and one hundred $1 prizes. What is expected value of a ticket?
A. $300
B. $0.60
C. $1
D. $100
Answer: B
Mathematics
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Solve the problem.The radius of a newly discovered planet is approximately 56,000,000 meters. Rewrite the radius in scientific notation.
A. 5.6 × 108 m B. 5.6 × 106 m C. 56 × 106 m D. 5.6 × 107 m
Mathematics
Evaluate the improper integral or state that it is divergent.
A. 
B. 
C. 
D. Divergent
Mathematics
Find the indicated vector in terms of i and j.If u = -11i - 2j and v = -7i + 7j, find u - v.
A. -4i - 9j B. -5i + 5j C. -18i + 5j D. -6i + 5j
Mathematics
Rationalize the denominator and simplify.
A. 
B. 
C. 7x
D. 16
Mathematics