Use Gaussian elimination to solve the system of equations. x- y+ 2z= 14x+ z= 0 x+ 4y+ z= -4
A. No solution
B. (0, 0, -1)
C. (0, -1, 0)
D. (0, -1, 1)
Answer: C
Mathematics
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Solve the problem.The velocity of a particle (in 
) is given by v = t2 - 6t + 4, where t is the time (in seconds) for which it has traveled. Find the time at which the velocity is at a minimum.
A. 4 s B. 3 s C. 6 s D. 2 s
Mathematics
Provide an appropriate response.Is there an identity element for the operation of subtraction over the set of integers? Support your claim with an example.
What will be an ideal response?
Mathematics
Choose the most reasonable unit of measure.Circumference of a coin 68 
(mm, cm, m, km)
A. km B. mm C. cm D. m
Mathematics
Combine. Simplify the answer.11
+ 11
A. 22
B. 23
C. 21
D. 11
Mathematics