Apiece of paper is 4/1000 inches thick. how many sheets of paper will it take to make a stack 1 inch high

What value of x is in the solution set of 4x - 12 s 16 + 8x? -10 -9 -8 -7

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 ratio is proportional to 18/21