Solve the system in terms of the arbitrary variable listed.z;x + 3y + 2z = 11 4y + 9z = -12
A. 
B. 
C. 
D. 
Answer: C
Mathematics
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In which of the following countries or regions is the emphasis on saving the environment the STRONGEST?
A. Latin America B. Russia C. Europe D. United States
Mathematics
Write out the sum.
A. 1 + 2 + 3 + ... + n B. 6 + 7 + 8 + ... + (n + 5)2 C. (n + 5)2 D. 36 + 49 + 64 + ... + (n + 5)2
Mathematics
Choose the graph that represents this subset of the real numbers.
?
and 
?
A. 
B. 
C. 
D. 
E. 
Mathematics
Evaluate the expression. Write your answer without exponents.(-13)0
A. 1 B. -13 C. 0 D. -1
Mathematics