A train leaves Houston and travels north at 65km/h. After it travels 150km, it turns left and travels 60km towards the west at 55km/h. What is the total distance that the train traveled?

30 points - when can a theory be modified if a new type of technology allows for new observations that raise new questions? a. immediately, while the questions about the theory are being asked b. after new hypotheses related to the theory are tested in experiments c. only after the new observations disprove all parts of the theory d. while scientists begin to think about how the theory could improve

Determine the age of a fossil if it had only one eighth of its original carbon-14 content remaining?

An open cart is moving along a straight frictionless horizontal track. when rain starts falling vertically into the cart, what happens to the speed of the cart?