Explain how knowing that 5 divided by 8 equals 0.625 you write the decimal for four wholes and five eights

Ill mark the brainliest if you me with the these three questions 7,8,9

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

The quadratic function h(t)=-16.1t^2+150 choose the graph representation