Suppose a variable is approximately normally distributed with mean 12 and standard deviation 5. What is the Z-score of x= 4?
A) 1.6
B) 0
C)- 1.6
D) -0.083

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