Please help! I’ll give brainliest!

Expresa commuter train leaves downtown sation and travels at a average speed of 55 miles per hour towards the north side sation, which is 50miles away. thirty minutes later, express commuter train #7 leaves north side and travels at a average speed of 35miles per hour towards downtown sation. at the moment the two trains pass each other, how far(in miles) is train #12 from the downtown sation and how long(in minutes) has the #12 train been traveling

If sin(x) = 0 and cos(x) = 1, what is tan(x)?

What is 10+10+20 about the origin the square root of a triangle.