a boat travels 45 miles upstream (against the current) in 5 hours. the boat travels the same distance downstream in 3 hours. wha
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A principle square root of a real number that's not negative, such as 49, is the square root of that number that is not negative.
If you take the square root of 49, you get either -7 or 7, since both
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equal 49. However, the principle square root would be A) 7, since it's not negative.
If you take the square root of 49, you get either -7 or 7, since both