Here, what you have to do is just do 2784 divided by 17. The answer to this is
I tried, but I kept getting 7542...which isn't an answer choice.
Let b=height of building. By similar triangles we can say:
b/44.75=3.1/1.29
b=44.75*3.1/1.29
b≈107.54
b≈108 meters (to the nearest whole meter)
The reciprocal is 6/23 because once you change it into a mixed number you get 23/6 then you flip it