I think the answer is B, if not not mistaken.
B I believe
Negative and positive
Answer: 83/5 1660%
Step-by-step explanation:
The pythagorean theorem states that in a right triangle, a² + b² = c².
Since a = b here, we square 15 and get 225 then double it to get 450. Then we find the square root of that: d is Approximately 21.213.
Hope this helps!