Find the rectangular coordinates for the point for which the polar coordinates are given.
A. (-2, -2
)
B. (2, -2
)
C. (2, 2
)
D. (-2, 2
)
Answer: D
Mathematics
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Solve.On the morning of December 19 the temperature was -4°F. The next morning the temperature had risen 14°F. What was the temperature on the morning of December 20?
A. -10°F B. 18°F C. -18°F D. 10°F
Mathematics
Find the mean for the group of data items. Round to the nearest hundredth, if necessary.5, 1, 3, 12, 4, 11, 2, 3
A. 5.86 B. 4.75 C. 5.43 D. 5.13
Mathematics
Perform the indicated operation.u = 6i + j, v = -10i - 8j, w = i - 4j; Find v - (u - w).
A. -17i - 5j B. -3i - 11j C. -15i - 13j D. -15i + 13j
Mathematics
Determine the specific solutions (if any) to the equation on the interval [0, 2?).cos 2? = 
- cos 2?
A. 
, 
, 
, 
B. 
, 
, 
, 
C. no solution
D. 0, 
, ?, 
Mathematics