Find the angle between the pair of vectors to the nearest tenth of a degree.
, 
A. 145.1°
B. 57.6°
C. 67.6°
D. 135.1°
Answer: D
Mathematics
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Solve the problem.A water trough has a semicircular cross section with a radius of 0.25 m and a length of 4 m (see figure). How much work is required to pump water out of the trough when it is full? Round to two decimal places when appropriate.
A. 204.17 J B. 9,800 J C. 39,200? J D. 408.33 J
Mathematics
Find the volume of the indicated region.the region common to the interiors of the cylinders 
and 
A. 
B. 500
C. 
D. 
Mathematics
Use multiplication to check the answer. If an answer is incorrect, find the correct answer.
A. Incorrect; should be 325 R2 B. Incorrect; should be 324 R3 C. Correct D. Incorrect; should be 325 R4
Mathematics
Simplify, if possible.-8
- 2
A. 2
B. -10
C. -14
D. 14
Mathematics