The current of the Naboo River has speed 2 mph. It takes Senator Amidala's boat a total of 3 hours to travel 8 miles upstream and 8 miles back. Set up an equation that would find the speed of the boat in still water.

Combine like terms to make a simpler expression 3z+z

The figure shows triangle def and line segment bc, which is parallel to ef: triangle def has a point b on side de and point c on side df. the line bc is parallel to the line ef. part a: is triangle def similar to triangle dbc? explain using what you know about triangle similarity. part b: which line segment on triangle dbc corresponds to line segment ef? explain your answer. part c: which angle on triangle dbc corresponds to angle f? explain your answer. asap

Which of the following expressions cannot be simplified to x – 2?