Round the decimal to the given place value.83.2, nearest ten
A. 79
B. 81
C. 80
D. 83.2
Answer: C
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Estimate the answer by rounding as indicated.Estimate by rounding to the nearest hundred.
A. 183 B. 1300 C. 100 D. 200
Add or subtract. Express the answer as a mixed number.15 - 5
A. 14
B. 9
C. 10
D. 10
Solve. Assume the exercise describes a linear relationship.Persons taking a 30-hour review course to prepare for a standardized exam average a score of 620 on that exam. Persons taking a 70-hour review course average a score of 783. Find a linear equation which fits this data, and which relates score to review time. Use this equation to predict an average score for persons taking a 44-hour review course. Round your answer to the nearest tenth.
A. 669.8 B. 677.1 C. 681.3 D. 691.1
Solve the problem.The voltage E in an electrical circuit is given by E = 3.4 cos 100?t, where t is time measured in seconds. Find the amplitude.
A. 100? B. 100 C. 3.4 D. 6.8