Parametrize the surface S.S is the portion of the sphere x2 + y2 + z2 = 81 between z = - 
and z = 
.
What will be an ideal response?
Answers will vary. One possibility is r = 9 cos ? sin ?i + 9 sin ? sin ?j + 9 cos ?k, 
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Solve the problem. Round to the nearest tenth if necessary.A 22-foot ladder is leaning against a house with the base of the ladder 6 feet from the house. How high up the house does the ladder reach? If necessary, round to the nearest tenth foot.
A. 21.8 ft B. 16 ft C. 22.8 ft D. 21.2 ft
Solve the problem. Round amounts to the nearest cent and percents to the nearest tenth of a percent.The Oak House had a markup of $22.83 on an oak table that they sold for $89.99. Find the cost and the percent of markup.
A. $89.99, 25.4% B. $67.16, 25.4% C. $67.16, 34.0% D. $112.82, 20.2%
Use the given zero to find all zeros of the function.f(x) = x3 - 2x2 - 11x + 52; zero: -4
A. 1 + 2i, 1 - 2i
B. 1 + 2i
, 1 - 2i
C. 6 + 4i, 6 - 4i
D. 3 + 2i, 3 - 2i
Solve the problem.Bob fenced in a rectangular garden in his yard. The length of the rectangle is 6 feet longer than the width, and the perimeter is 80 feet. What is the width of the rectangle?
A. 19 feet B. 34 feet C. 16 feet D. 17 feet