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rhiannonwheatcr4468
29.07.2019 •
Mathematics
If c(8,1) and d(-2,3) what is the distance between the two points
enter your answer as a number, rounded to one decimal place, if necessary
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Ответ:
So, if x*y > than zero, we know that neither x nor y can be zero, because anything multiplied by zero is equal to zero. Now, we also know, that a negative times a negative is positive, and a positive times a positive times a positive is positive.
So,
x and y can either both be negative, or both be positive.
They cannot be zero, or one negative, one positive.
Hope this helps!