For the point given in rectangular coordinates, find equivalent polar coordinates 
for 
and 
(2
, 2)
A. (2, 45°)
B. (8, 30°)
C. (4, 30°)
D. (4, 60°)
Answer: C
Mathematics
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A. $4394.44 B. $3862.58 C. $3740.51 D. $3864.73
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Solve the problem.What domain D in ?3 minimizes the value of the integral 
D
A. D = ?3
B. D = the boundary of the sphere 
.
C. D = the boundary and interior of the sphere 
.
D. No such maximum domain exists.
Mathematics
Solve the problem.The sum of a student's three scores is 221. If the first is 20 points more than the second, and the sum of the first two is 26 more than twice the third, what was the first score?
A. 68 B. 45 C. 65 D. 88
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Select the more reasonable temperature for the item.Room temperature20°C20°F
A. 20°C B. 20°F
Mathematics