Simplify the radical expression. Indicate if the expression is not a real number.
A. 40
B. 10
C. Not a real number
D. 9
Answer: D
Mathematics
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Perform the indicated operations. Simplify the answer.
A. 4i B. -4i C. 4 D. -4
Mathematics
Factor the trinomial.s2 + 6s + 8
A. (s + 8)(s - 1) B. (s + 8)(s + 6) C. (s - 4)(s - 2) D. (s + 4)(s + 2)
Mathematics
Multiply.(
+ 
)(
- 
)
A. 6 - 2
B. 13
C. -1
D. 6 - 2
Mathematics
Solve the problem.Suppose that a continuous random variable has a joint probability density function given byf(x, y) = y2 - 2y + 
xy - 
x + 
, 1 ? x ? 5, 0 ? y ? 1 Find the probability that a point is in the region bounded by 2 ? x ? 5 and 0 ? y ? 1.
A. 
B. 
C. 
D. 
Mathematics