What does the symbol for factorial function (n! ) mean?
a it means to divide a series of descending c. it means to divide a series of ascending natural
natural numbers.
numbers
it means to multiply a series of descending d. it means to multiply a series of ascending
natural numbers
natural numbers

Aphrase is shown read the phrase and give me the answer

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

Simplify this expression. 8x 16(x + y)