Select all that are equal to 5^3 ×5-^7

A. 1/5-^4
B. 1/5^4
C. 5-^4
D. 1/-625​

Find the value of x that will make l ll m

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

I'm a polygon i have no parallel lines i am formed 3 line segments i have one right angle two of my angles are angles what am i