A freight train made a trip to NYC and back. The trip there took nine hours and the trip back took 15 hours It averaged 33 km/hour on the return trip. Find the average speed of the trip there.​

What is the reflection image of (5,-3) across the line y = -x?

Follow these steps using the algebra tiles to solve the equation −5x + (−2) = −2x + 4. 1. add 5 positive x-tiles to both sides and create zero pairs. 2. add 4 negative unit tiles to both sides and create zero pairs. 3. divide the unit tiles evenly among the x-tiles. x =

If a || b and b | y, then ? a) x || y. b) x | a. c) a | y. d) a || y.