Respuesta :
The distance they ran makes a triangle, if you draw it out and solve for the missing side, the missing line is 12km, hope that helps
So if 13 km is the longest side, then the empty side has to be in the middle of the 2, which the only answer that fits it is 12.Â
Or you can do it the original way.Â
for the equation, you would have to bring c squared, which is 13, over to the side with 5 so the blank side is by itself.Â
so then square 13 and 5Â
13 squared is 169Â
5 squared is 25Â
subtractÂ
169-25=144Â
144's square root is 12Â
so there is your answer is 12 km.
Or you can do it the original way.Â
for the equation, you would have to bring c squared, which is 13, over to the side with 5 so the blank side is by itself.Â
so then square 13 and 5Â
13 squared is 169Â
5 squared is 25Â
subtractÂ
169-25=144Â
144's square root is 12Â
so there is your answer is 12 km.