A line
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Yes it is always a negative because that is the only way it would be an additive is if it was a negative number
Answer: i dunno
Step-by-step explanation: srry
Answer: 8.48 Feet
Step-by-step explanation:
We can use the Pythagorean Theorem, A^2 + B^2 = C^2
A^2 + B^2 = C^2
A^2 + 3^2 = 9^2
A^2 + 9 = 81
81 - 9 = A^2
72 = A^2
√72 = A
8.48 = A
Hope this helps!