Evaluate the expression using the given values.
- 
x = -6, y = 7
A. -13
B. 13
C. -1
D. 1
Answer: C
Mathematics
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Find the union or intersection as indicated.Find A ? B if A = {x|x < -3} and B = {x|x ? 6}
A. ? B. {x|-3 < x ? 6} C. {x|x < -3 ? x ? 6} D. {x|x > -3}
Mathematics
Simplify the expression.
A. -2 B. 2 C. 4 D. not a real number
Mathematics
Use mathematical induction to prove that the statement is true for every positive integer n.If 0 < a < 1, then an < an-1.(Assume that a is a constant.)
What will be an ideal response?
Mathematics
Add or subtract as indicated.
+ 
A. 
B. - 
C. 
D. - 
Mathematics