If an estimator is unbiased, then A. the estimator is equal to the true value. B. the mean of the estimator is usually close to the true value. C. the mean of the estimator is equal to the true value. D. the estimator is usually close to the true value.

Select the lengths in centimeters that would form a right triangle

Graph g(x)=2cosx . use 3.14 for π . use the sine tool to graph the function. graph the function by plotting two points. the first point must be on the midline and closest to the origin. the second point must be a maximum or minimum value on the graph closest to the first point.

David estimated he had about 20 fish in his pond. a year later, there were about 1.5 times as many fish. the year after that, the number of fish increased by a factor of 1.5 again. the number of fish is modeled by f(x)=20(1.5)^x. create a question you could ask that could be answered only by graphing or using a logarithm.