Determine whether the lines through each pair of points are parallel.(-1, 2) and (3, 2); (-6, -1) and (-4, -1)
A. not parallel
B. parallel
Answer: B
Mathematics
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Evaluate the integral.
A. 
B. 1?
C. 
?
D. 
- ?
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Solve the problem.Two tracking stations are on an east-west line 119 miles apart. A weather balloon is located on a direction of 
from the western station and a direction of 
from the eastern station. How far is the balloon from the western station?
A. 429 miles B. 377 miles C. 438 miles D. 386 miles
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Solve the problem.Suppose G is a graph with 51 vertices and 50 edges. Then
A. G cannot have any circuits. B. G must be a tree. C. G is either a tree or is not connected. D. G cannot have more than one path joining any two vertices. E. none of these
Mathematics
Use Identities to find the exact value.cos (-75°)
A. -
- 
B. 
C. 
- 
D. 
Mathematics