Two trains leave the same station at the same time, but are headed in opposite directions. one train travels for 3.5 hours and the other train travels for 4.5 hours. how fast are the trains traveling if they are now 600 mi apart?

Acoin bank containing only dimes and quarters has 12 more dimes than quarters. the total value of the coins is $11. how many quarters and dimes are in the coin bank?

Need plz been trying to do it for a long time and still haven’t succeeded

A)a square brown tarp has a square green patch green in the corner the side length of the tarp is (x + 8) and the side length of the patch is x what is the area of the brown part of the tarpb)a square red placemat has a gold square in the corner the side length of the gold square is (x - 2) inches with the width of the red region is 4 in what is the area of the red part of the placemat