Describe the zero vector (the additive identity) of the vector space 
.
?
A. ?
?
B. ?
?
C. ??
D. ??
E. ?
Answer: B
Mathematics
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Solve the given equation or inequality. If an equation is given, then write the solution set in set notation. If an inequality is given, then write the solution set in interval notation.
+ 0.1 ? 0.7
A. (10.2, 12.6) B. (-?, 10.2] ? [12.6, ?) C. {10.2, 12.6} D. (-?, 10.2] ? [12.6, ?)
Mathematics
Simplify the expression. Assume all variables represent nonzero real numbers.- 
0
A. 1
B. -1
C. 
D. 
Mathematics
Use the information to complete a circle graph. Note that the circle is divided into 100 equal sections.Favorite subjects studied by students of one school:
?
A. 
B. 
C. 
D. 
Mathematics
Solve by the substitution method.-7x - 7y = -35 -3x + 2y = 10
A. {(0, 5)} B. {(0, 6)} C. ? D. {(-1, 6)}
Mathematics