Fill in the blank with one of the words or phrases listed below. 
A combination of operations on variables and numbers is called a(n) 
.
A. average
B. equation
C. absolute value
D. expression
Answer: D
Mathematics
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Answer the question.Suppose that an > 0 and bn > 0 for all n ? N (N an integer). If 
= ?, what can you conclude about the convergence of 
?
A. 
diverges if 
diverges, and 
converges if 
converges
B. 
diverges if 
diverges
C. 
converges if 
converges
D. The convergence of an cannot be determined.
Mathematics
Determine if the given ordered triple is a solution of the system. x + y + z = 6 x - y + 2z = 132x + y + z = 8(2, -1, 5)
A. No B. Yes
Mathematics
Perform the indicated operation.13,190 ml - 0.4 L (in liters)
A. 13,189.6 L B. 12.79 L C. 131.5 L D. 12,790 L
Mathematics
Write the expression in the standard form a + bi.If w = 9 + 7i, evaluate w - 
.
A. 18 B. 0 C. 14i D. -18 + 14i
Mathematics