Answer: the eastbound train had travelled 12 miles Explanation: using Pythagoras theorem, we know that X^2 = a^2 + b^2 Where ^ stands for raised to power. Let a stand for the train going towards North and b stands for the train going towards east. X stands for the total distance between train a and b = 20 miles. By Pythagoras rule X^2 = a^2 + b^2 20^2 = 16^2 + b^2 400 = 256 + b^2 so that b^2 = 400 - 256 = 144 b = √144 b = 12 miles.
If it starts at 5 degrees celsius and raises to 15 degrees celsius in 3 minutes it increases by about 3 1/3 every minute. times that by 5 and you get 16 2/3. times that by 10 and you get 33 1/3
Since 40%=40/100=4/10, we can divide 11 by 10 and multiply that by 4 to get the weight gained, which is 1.1*4=4.4. The weight gained paired with the starting weight = 10+4.4=14.4
