If the statement is true for all sets C and D, write "true." If it is not true for all sets C and D, write "false." Assume that C ? ?, U ? ?, and C ? U.? ? C
A. True
B. False
Answer: A
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Solve.Given two 15-cm sides and two 10-cm sides, how many quadrilaterals can be formed with a 75° angle?
What will be an ideal response?
Perform the indicated operation. Express the answer in scientific notation.
A. 10 × 10-8 B. 5 × 10-4 C. 5 × 10-8 D. 10 × 10-4
Solve.A boat goes 480 miles downstream in the same time it can go 400 miles upstream. The speed of the current is 4 miles per hour. Find the speed of the boat in still water.
A. 40 mph B. 48 mph C. 88 mph D. 44 mph
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