A couple is planning to have four children. Suppose that for this couple the probability of a boy is 46% and the probability of a girl is 54%. (Assume the gender of each child is independent from that of the other children.)What is the probability that they will have four boys?
A. 0.46 + 0.46 + 0.46 + 0.46
B. 0.464
C. 0.463 × 0.54
D. 
E. none of these
Answer: B
Mathematics
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Solve for y.9x + 7 = 10y - 6
A. y = 
B. y = 9x + 13
C. y = 
D. y = 9x - 13
Mathematics
For the compound inequality, give the solution set in both interval and graph forms. 3x - 10 ? -13 or 3x - 10 ? -1
A. (-?, 3]
B. (-?, -1] ? [3, ?)
C. [-1, ?)
D. [-1, 3]
Mathematics
Find the foci of the ellipse.64x2 + y2 - 384x + 512 = 0
A. (3, 3
), (3, -3
)
B. (8, 2
), (8, -2
)
C. (3 + 3
, 0), (3 -3
, 0)
D. (3, 8), (3, -8)
Mathematics
Find the center and radius of the circle with the given equation. x2 + (y + 7)2 = 121
A. Center (-7, 0), r = 121 B. Center (0, -7), r = 11 C. Center (0, -7), r = 121 D. Center (-7, 0), r = 11
Mathematics