Find the absolute value.
A. 28
B. 0
C. 14
D. -14
Answer: C
Mathematics
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Find projv u.v = i + j + k, u = 4i + 12j + 3k
A. 
i + 
j + 
k
B. 
i + 
j + 
k
C. 
i + 
j + 
k
D. 
i + 
j + 
k
Mathematics
Solve.Two trains traveling on parallel tracks are going toward each other from a distance of 
kilometers. If one train is moving at 
kilometers per hour and the other is moving at 
kilometers per hour, after how many hours will the trains pass each other?
A. 6 hr. B. 1 hr. C. 5 hr. D. 4 hr.
Mathematics
Divide.
A. 18.2 B. 1.82 C. 2.82 D. 28.2
Mathematics
Solve the system by graphing. If there is no solution or an infinite number of solutions, so state. Use set notation to express the solution set.
A. no solution; ?
B. infinitely many solutions; {
3x + y = 12} or {
9x + 3y = 36}
C. {(5, -3)}
D. {(0, 12)}
Mathematics