The value of the 7 in 507,264 is 10 times the value in which number

What is 20+(5 x 2/5 )+ 3 show your work

What is the measure of one interior angle of a pentagon

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