Prepare a probability distribution for the experiment. Let x represent the random variable, and let P represent the probability.Three balls are drawn from a bag containing 5 red and 3 green balls. The number of green balls is counted.
A. 
B. 
C. 
D. 
Answer: A
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Solve.Find the center, foci, and asymptotes of the hyperbola y2 - x2 - 4y + 6x - 21 = 0
A. C: (3, 2); F: (0, 2 + 4
), (0, 2 - 4
); A: y - 2 = x - 3, y - 2 = -(x - 3)
B. C: (3, -2); F: (4
, 0), (- 4
, 0); A: y =
x, y = - 
x
C. C: (3, 2); F: (3, 2 + 4
), (3, 2 - 4
); A: y - 2 = x - 3, y - 2 = -(x - 3)
D. C: (-1, 2); F: (4
, 0), (- 4
, 0); A: y = x, y = -x
Find the equation for the plane tangent to the parametrized surface S at the point P.S is the sphere r(?, ?) = 3 cos ? sin ?i + 3 sin ? sin ?j + 3 cos ?k; P is the point corresponding to 
.
What will be an ideal response?
Solve. If necessary, round percents to the nearest tenth, dollar amounts to the nearest cent, and all other numbers to the nearest whole.40% of the teachers in a school are female. If there are 255 teachers altogether, how many teachers are female?
A. 638 teachers B. 102 teachers C. 16 teachers D. 153 teachers
Divide and write the result in standard form.
A. 
- 
i
B. 
- 
i
C. 
- 
i
D. 
+ 
i