Solve the system of equations. If there is no solution to the system, give a reason.5x + 2y + z = -112x - 3y - z = 177x + y + 2z = -4
A. (0,-6, 1)
B. (-3, 0, 4)
C. (0, 6, -1)
D. (3, 0, -4)
Answer: A
Mathematics
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Write interval notation.{ x ? x < 5 }
A. (-?, 5] B. (5, ?) C. (-?, 5) D. [5, ?)
Mathematics
Solve the problem.The sum of all the forces acting on an object can be described mathematically by 
where m is the mass of the object (in kg) and a is the acceleration felt by the object (in m/s2) as a result of the forces (in newtons, N) acting on it. What is the force required to accelerate a 5 kg object at 
A. 19 N B. 5 N C. 70 N D. 196 N
Mathematics
Perform the indicated operation for the given f(x) and g(x).f(x) = x2 + 4x + 1, g(x) = 
Find (f ? g)(9).
A. 21 B. 22 C. 16 D. 15
Mathematics
Simplify the expression using the imaginary unit i.
A. -18i
B. 18i
C. -i
D. ±18
Mathematics