You are helping a friend plan a rectangular deck on the back of his house. He would like the deck to be 4 feet longer than it is wide. The deck should have a surface area of 60 square feet. Which equation can be solved to find the width of the deck?

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