Rationalize the numerator.
A. 
B. 
C. 
D. 
Answer: A
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Multiply and write the answer in scientific notation.(5.8 × 10-4)(8.7 × 107)
A. 14.5 × 1011 B. 1.62 × 103 C. 5.046 × 104 D. 5.046 × 103
Solve the problem.A rectangular enclosure must have an area of at least 200 yd2. If 60 yd of fencing is to be used, and the width cannot exceed the length, within what limits must the width of the enclosure lie?
A. 15 ? w ? 20 B. 10 ? w ? 15 C. 0 ? w ? 10 D. 10 ? w ? 20
Find the expected value.A fair coin is tossed three times, and a player wins $3 if 3 tails occur, wins $2 if 2 tails occur and loses $3 if no tails occur. If one tail occurs, no one wins. What is the expected value of the games?
A. $0.75 B. $2.00 C. -$3.00 D. $3.00
Use < or > for ? to write a true sentence. Draw a number line if necessary.28 ? 25
A. > B. <