Rationalize the denominator. Assume that all variables represent positive real numbers.
A. 
B. 
C. 124
D. 3
Answer: B
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Indicate whether the equation has no solution or is true for all real numbers. If neither is the case, solve for the variable.
(4x - 6) = 6 
+ 6
A. {0}
B. ?
C. {x|x is a real number}
D. 
Classify the statement as an example of theoretical or experimental probability.The probability of getting heads and a 1 when a coin is tossed and a die is rolled is 
.
A. theoretical B. experimental
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
Perform the indicated operations, and write the answer in scientific notation.(4 × 107)(7 × 108)
A. 2.8 × 1015 B. 2.8 × 1057 C. 2.8 × 1014 D. 2.8 × 1016