Solve the problem.What is the probability that at least 2 people have the same birth month in a group of 4 people?
A. 0.573
B. 0.544
C. 0.456
D. 0.427
Answer: D
Mathematics
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Use either the binomial theorem or Pascal's Triangle to expand the binomial.(3y - x)4
A. 3y4 - 12y3x + 18y2x2 - 12yx3 + x4 B. 81y4x - 108y3x2 + 54y2x3 - 12yx4 C. 81y4 - 81y3x + 54y2x2 - 9yx3 + x4 D. 81y4 - 108y3x + 54y2x2 - 12yx3 + x4
Mathematics
Use roster notation to name the set.The set of natural numbers that are multiples of 3
A. {3, 9, 27, . . . } B. {3, 6, 12, . . . } C. {3, 6, 9, . . . } D. {1, 2, 3, . . . }
Mathematics
Simplify the expression.- 
+ 9y + 
y - 5 + 
y
A. 
y - 4
B. 11 + 4
C. 
y
D. 11y - 
Mathematics
Graph the pair of parametric equations.x = t2, y = 
+ 3, 0 ? t ? 4
A. 
B. 
C. 
D. 
Mathematics