Simplify: -9a(-5b)

question 55

Short Answer

Simplify: -9a(-5b)

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Definitions:

Confidence Intervals

A range of values, derived from sample statistics, that is believed to contain the value of an unknown population parameter with a certain level of confidence.

Prediction Intervals

A prediction of the range within which future results are expected to occur, with a specified level of confidence, based on existing observations.

Confidence Interval

A series of values, derived from investigations of a sample, expected to incorporate the value of an unrevealed population parameter.

Population Mean

The average value of all the elements in a population, representing a central measure of tendency for the distribution of values.