Aprojectile is shot into the air following the path h(x)= 3x^2 -12x + 5. at what time value x will it reach a maximum height ? a. x=1 b. x= 2 c. x= 4 d. x= 5 and explain

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