Graph the pair of parametric equations in the rectangular coordinate system.x = t2, y = 
+ 4; 0 ? t ? 4 
A. 
B. 
C. 
D. 
Answer: D
Mathematics
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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 an equal number of boys and girls?
A. 0.462 × 0.542 B. 0.462 + 0.542 C. 6 × 0.462 × 0.542 D. 4 × 0.462 × 0.542 E. none of these
Mathematics
Use the shell method to find the volume of the solid generated by revolving the region bounded by the given curves and lines about the x-axis.x = 3e- y2, y = 0, x = 0, y = 1
A. 3
?
B. 6
?
C. 6
?
D. 3(e - 1) ?
Mathematics
Solve.
= 
+ 
A. 3
B. -3
C. 
D. - 
Mathematics
Determine the maximum number of turning points of f.f(x) = -x2(x + 3)3(x2 - 1)
A. 6 B. 2 C. 7 D. 5
Mathematics