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Earn +20 ptsQ: Which positive rational number when squared is equal to 225?
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When it went off absolute value and the opposite of a rational number equal?
When the number is non-positive.
Why does the square root of -25 have no real solution?
Because the square root of -25 would be that number that, squared, would equal -25. No number, positive or negative, can result in a negative square. Since -25 is a negative number, no number, positive or negative, can be squared to equal -25.
In any distribution is the sum of the squared deviations from the mean always equal to zero?
No. It cannot be. Remember that when you square a negative number it becomes a positive number. Thus all squared deviations are positive and their sum must be positive.
What does negative b squared equal to?
It's equal to positive b squared, or (b x b) .
Can a rational number be multiplied by an irrational number and equal a rational number?
Only if the rational number is 0.
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