Solve the system by the addition method.
A. {(-1, -2)}
B. {(-1, 2)}
C. {(1, -2)}
D. ?
Answer: C
Mathematics
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Solve the system of equations.8x - 2y - 4z = 45x + 2y - 8z = -824x - 6y - 12z = -1
A. ? B. {(4, -8, -1)} C. {(3, 3, -1)} D. {(x,y,z) | 8x - 2y - 4z = 4}
Mathematics
Solve the problem.In how many distinguishable ways can the letters of the word GEOLOGY be arranged?
A. 5040 B. 630 C. 2520 D. 1260
Mathematics
Simplify the expression. Assume that all variables are positive.
A. t2z3
B. 
C. 
D. t3z2
Mathematics
Use the substitution method to solve the following system. If the equations of the system are dependent, or if the system is inconsistent, so indicate.
A. 
B. 
C. 
D. The equations are dependent.
E. The system is inconsistent.
Mathematics