It is 8
kilometers from lucy's house to the nearest mailbox. how far is it in meters?

Give the equations of two different lines that are perpendicular to the line 3x + 4y = 7.

Does anyone know how to solve and graph this: 4 + | a + 2 | < 7the only part i don't get is the "4 +"

The sum of the speeds of two trains is 720.2 mph. if the speed of the first train is 7.8 mph faster than the second train, find the speeds of each.