Perform the indicated operation.(4z + 8) + (-2z - 5)
A. 2z2 + 3
B. 2z + 3
C. 2z - 3
D. -8z2 - 40
Answer: B
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Use the guidelines to evaluate the study. From the information given, what is the biggest flaw in the study?A researcher was interested in the exercise habits of the residents of the village of Pine Heights. She interviewed every 10th person who left the post office until she had interviewed 100 people. Each of the people interviewed was asked to rate their exercise level according to the following scheme "(1) very little, (2) some, (3) moderate, (4) a lot, (5) extensive". The researcher reported that, on average, the residents of Pine Heights exercise moderately.
A. Selection bias B. Measurement of the variable is not well defined C. Confounding variables D. The source of the study E. Participation bias
Perform the indicated operation.0.14 + (-6.250)
A. -6.39 B. -6.29 C. 0.875 D. -6.11
Use a z-Table to find the specified area.Between the mean and 0.35 deviations from the mean
A. 0.1414 B. 0.8635 C. 0.1368 D. 0.6368
Decide whether the statement is true or false.sin 86° > sin 24°
A. True B. False