The number of roses (r) in a garden increases when the number of weeds (w) decreases. write the correct equation for this scenario, and solve for the number of roses when there are 5 weeds.

weeds roses
10 20
20 10

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