Rationalize the denominator. Assume that all variables represent positive real numbers.

A.
B.
C. 124
D. 3 


Answer: B

Mathematics

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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.

Mathematics

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

Mathematics

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

Mathematics

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

Mathematics