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Answer:
15 is a solutin but 9 is not
Step-by-step explanation:
x-3=12 does not have a x a x is a 3
The sum of the squared legs must give the squared hypotenuse:

But of course we can only accept the positive solution, because
is a length and can't be negative.
Answer:
The answer is D. y - x = 1
Step-by-step explanation:
cause they have the same slope