10 8 6 8 M 13 x 6 X = [?] Enter the number that belongs in the green box. Enter​

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

What is the distance from zero if a quadratic function has a line of symmetry at x=-3 and a zero at 4

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