The temperature increased 12 degrees between 9 am and noon. it decreased 9 degrees between noon and 6 pm.

write an expression with three terms to show the change in temperature. let the first term represent the temperature at 9am.

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