Simplify the expression.
A. 9
B. - 
C. -9
D. 
Answer: A
Mathematics
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Write the numbers in numerical order, smallest to largest.9, -11, 23, -20, 1
A. 1, 9, 11, 20, 23 B. -20, -11, 1, 9, 23 C. 23, 9, 1, -11, -20 D. -11, -20, 1, 9, 23
Mathematics
Solve the equation.log2x = -3
A. 
B. 
C. 
D. 
Mathematics
Simplify.-|-24|
A. - 
B. 48
C. -24
D. 24
Mathematics
Use Bayes' rule to find the indicated probability.Two stores sell a certain MP3 players. Store A has 34% of the sales, 5% of which are of defective items, and store B has 66% of the sales, 1% of which are of defective items. The difference in defective rates is due to different levels of pre-sale checking of the product. A person receives a defective item of this product as a gift. What is the probability it came from store B?
A. 0.275 B. 0.22 C. 0.5667 D. 0.7083
Mathematics