Let M denote the midpoint of the line segment joining (2, 3) and (7, 6). Find the midpoint between M and (-6, -4).
?
A. (2, 0.25)
B. (-0.75, 0.25)
C. (-2, -0.5)
D. (4.5, 4.5)
E. (0.5, 1)
Answer: B
Mathematics
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Solve.How much 12% alcohol solution should be mixed with a 4% alcohol solution to get 30 liters of 8% alcohol solution?
A. 15 L of 12%, 15 L of 4% B. 18 L of 12%, 12 L of 4% C. 20 L of 12%, 10 L of 4% D. 9 L of 12%, 21 L of 4%
Mathematics
Solve the problem for the given information.Find the equation of a line passing through the origin so that the sine of the angle between the line in 
and the positive 
is 
.
A. y = 
x
B. y = 
x
C. y = 
x
D. y = x
Mathematics
Find the domain of the function.f(x) = ln((x + 2)2)
A. (-2, ?) B. (-?, ?) C. (-?, -2) ? (-2, ?) D. (-?, 2) ? (2, ?)
Mathematics
Find the sum of the arithmetic sequence.4 + 8 + 12 + ... + 496
A. 30752 B. 31000 C. 30504 D. 31250
Mathematics