Simple Pythagorean theorem, And if you double check Tamara's work she is correct. Therefor B is the correct answer.
Doing (7x÷7) I think equals 1
Answer: train A arrives first
Step-by-step explanation:
5700 is 5731 rounded to the nearest hundred
Old price: p1 = $ 3.90;
New price: p2 = $ 3.40.
The percentual decrease is given by
d(%) = [ (p2 - p1) / p1 ] * 100 %
d(%) = [ (3.40 - 3.90) / 3.90 ] * 100 %
d(%) = [ - 0.50 / 3.90 ] * 100 %
d(%) = - 0.128 * 100 %
d(%) = - 12.8 % (approximately)
So the price fell 12.8 % approximately.
I hope this helps. =)
