Use front-end rounding to round each number. Then, multiply the rounded numbers to get an estimated answer. Finally, find the exact answer.estimateexact
A. Estimate: 120; exact: 114.62
B. Estimate: 12; exact: 11.462
C. Estimate: 12; exact: 11.362
D. Estimate: 120; exact: 113.62
Answer: D
Mathematics
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Solve the system by the addition method. If there is no solution or an infinite number of solutions, so state. Use set notation to express the solution set.
A. {(3, 2)}
B. {(2, 7)}
C. no solution; ?
D. 
Mathematics
Find the union of the sets.{-5, -1, 3, 6} ? {3, 6, 7}
A. {-5, -1, 3, 6} B. {-5, -1, 3, 6, 7} C. {3, 6} D. {3, 6, 7}
Mathematics
Find the expected value for the random variable x having this probability function.
A. 14 B. 14.4 C. 15.8 D. 17.2
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Divide.
A. 2.06 B. 20.6 C. 10.6 D. 1.06
Mathematics