13h\] p9.l6ewo8hi9kt85hu7g5yftgrftgy5h6uj7io909ikju6hygtrfefgthu6iko9iuj6hygtrfed
I think that it's an obtuse triangle.
Are there any answer choices?
9, 2, -5... so is going down by 7 each time, meaning the "common difference" is -7.
It would be 9 buddy. Negative divided by negative turns into positive. 45 divided by 5 is 9.