Insert "?" or "?" in the blank to make the statement true.{5, 7, 9} {x | x is an odd counting number}
A. ?
B. ?
Answer: A
Mathematics
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Answer the question.f(x) = 
Does 
f(x) = f(-1)?
A. No B. Yes
Mathematics
Find the probability.An urn contains balls numbered 1 through 20. A ball is chosen, returned to the urn, and a second ball is chosen. What is the probability that the first and second balls will be a 6?
A. 
B. 
C. 
D. 
Mathematics
Given that DB ? AC and B is the midpoint of AC; prove that ?ABD ? ?CBD.
Mathematics
Solve.
- 4 = x
A. 7 B. -6 C. 6 D. -7
Mathematics