Answer:
15
Step-by-step explanation:
Pythagorean theorem states that the hypogenous of a right triangle is . The hypogenous is the longest part of the triangle which is directly across from the 90 degree angle.
a = 9
b = 12
so,
325
I dont know how to explain it
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1. D. 1
2. B. y=a³/x
3. A. y=1/x
too long to give te explanations but they're there in the attachments