Find the expected value.In a large casino, the house wins on one of its games with a probability of 50.5%. All bets are 1 : 1 . If you win, you gain the amount you bet; if you lose, you lose the amount you bet. If you play 200 games in an evening, betting $1 each time, how much should you expect to win or lose?
A. Lose $101.00
B. Lose $2.00
C. Lose $1.00
D. Win $2.00
Answer: B
Mathematics
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Solve the equation.
+ 
= 5
A. - 
, -10
B. 
, -10
C. - 
, 10
D. 2, 10
Mathematics
Use Cramer's rule to solve the linear system. If D = 0, use another method to determine the solution set.9x + 9y = 9-2x - 7y = -37
A. {(-7, 8)} B. {(-6, 8)} C. Cramer's rule does not apply since D = 0; ? D. {(-6, 7)}
Mathematics
Find all rational zeros of f. Then (if necessary) use the depressed equation to find all roots of the equation f(x) = 0.f(x) = x5 - 9x4 + 21x3 + 3x2 - 46x + 30
A. {-5, -3, -1, -
, 
}
B. {-5, -3, 1, -
, 
}
C. {1, 3, 5, -
, 
}
D. {0, 1, 3, 5, 
}
Mathematics
The height of a regular square pyramid is 20 ft, and the length of a side of its base is 6 ft. What is the volume of the pyramid?
Mathematics