Solve for x.

x2 + 6x = 0
0, -6
0, 6
1, -6
1, 6

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

How do you find the circumfrance of a circle?

What is the anwers for 9+2x=5x-3-x