Find the expected value.A fair coin is tossed three times, and a player wins $3 if 3 tails occur, wins $2 if 2 tails occur and loses $3 if no tails occur. If one tail occurs, no one wins. What is the expected value of the games?
A. $0.75
B. $2.00
C. -$3.00
D. $3.00
Answer: A
Mathematics
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Perform the indicated operations.4
2
A. 256x2 - 640x + 400 B. 64x2 - 160x + 100 C. 64x2 - 40x + 25 D. 64x2 + 100
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Find the equation of the line that has the given properties. Write the equation in slope-intercept form, if possible. Contains (-3, -3); perpendicular to the line y = -3x - 1
A. y = - 
x - 2
B. y = 3x - 2
C. y = 
x - 2
D. y = -3x - 2
Mathematics
Factor the square of the binomial.1 - 6x + 9x2
A. (1 + 3x)2 B. (1 - 3x)(1 + 3x) C. (1 - 3x)2 D. (1 - 9x)(1 - x)
Mathematics
Tell whether the expression is a polynomial. If it is, give its degree.6x5 - 4
A. Polynomial; degree 5 B. Polynomial; degree 6 C. Polynomial; degree 4 D. Not a polynomial
Mathematics