when each data value in one sample is matched with a corresponding data value in another sample, the samples are known as .

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Which coefficient matrix represents a system of linear equations that has a unique solution ? options in photo*

He ! a group of farmers planned to clean 80 acres of wheat per day to finish the work on schedule. right before the work started, they received a new piece of machinery that them clean 10 more acres per day than originally planned. as a result of increased productivity in the last day before the deadline they only had to clean 30 acres. how many acres of wheat did the group of farmers have to clean?