Multiply. Write the answer as an improper fraction as needed.10 ? 
A.
B.
C.
D. 70
Answer: A
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Use the guidelines to evaluate the study. From the information given, what is the biggest flaw in the study?A pharmaceutical company conducted a study to test the effectiveness of its new anti-depression medication. 500 adults suffering from depression were selected at random and were randomly assigned to either a treatment group or a placebo group. The experiment was double blind. The results were analyzed by the company.
A. Confounding variables B. The setting may not encourage honest responses C. Selection bias D. Variables are difficult to define/measure E. The source of the study
What property of multiplication is illustrated in the diagram below?
A. Multiplication-by-zero property B. Associative property C. Multiplicative-identity property D. Commutative property
Solve the problem.What is the probability of a dart landing in the shaded region?(Assume that the x's represent equal measures and that the dart is equally likely to land in any region on the board.)
A.
B.
C.
D.
Solve the problem.The table shows the population of a city for five years. This data was used to develop the quadratic equation
, which models the population of the city y in millions in the year x, where x = 0 represents 2007, x = 1 represents 2008, and so on. Use the model to find the estimated population in the year 2009.
A. 66,822,000 B. 1,490,000,000,000 C. 65,538,000 D. 1,490,000