Recall that Betty arranged equal numbers of movies on four shelves of a shelving unit and placed 6 of her favorite movies on the top shelf. If x is the number of movies on each shelf, the expression for the total number of movies on the shelving unit is 4x + 6 Part A If each of the 4 shelves holds 12 movies, how many movies does Betty have on her shelving unit? S

Match each expression with its simplified form.

The standard deviation for a set of data is 5.5. the mean is 265. what is the margin of error?

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