1) x=9, because we can use the Pythagorean theorem, x^2 + 144 = 225, x^2 = 81
2) 
, because 6^2 +6^2 = 72, 
3) 
, because 
hope this helps... load for images!
Confusion? It ensure things are done effectively, to eliminate confusion and to save time.
Need questions so we can answer it
It is C! Fossil A is younger than the index fossil. Hope this helps!
I don't remember but i believe so that Guatemala is not, sorry if that is not coorect
